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## org.apache.commons.lang.builder
Class ToStringStyle

    java.lang.Object
      org.apache.commons.lang.builder.ToStringStyle

All Implemented Interfaces:
  Serializable

Direct Known Subclasses:
  StandardToStringStyle

    public abstract class ToStringStyle

extends Object
implements Serializable

Controls `String` formatting for `ToStringBuilder`. The main public interface is always via `ToStringBuilder`.

These classes are intended to be used as `Singletons`. There is no need to instantiate a new style each time. A program will generally use one of the predefined constants on this class. Alternatively, the `StandardToStringStyle` class can be used to set the individual settings. Thus most styles can be achieved without subclassing.

If required, a subclass can override as many or as few of the methods as it requires. Each object type (from `boolean` to `long` to `Object` to `int[]`) has its own methods to output it. Most have two versions, detail and summary.

For example, the detail version of the array based methods will output the whole array, whereas the summary method will just output the array length.

If you want to format the output of certain objects, such as dates, you must create a subclass and override a method.

     public class MyStyle extends ToStringStyle {
       protected void appendDetail(StringBuffer buffer, String fieldName, Object value) {
         if (value instanceof Date) {
           value = new SimpleDateFormat("yyyy-MM-dd").format(value);
         }
         buffer.append(value);
       }
     }

Since:
  1.0
Version:
  $Id: ToStringStyle.java 907168 2010-02-06 03:33:50Z mbenson $
Author:
  Apache Software Foundation, Gary Gregory, Pete Gieser, Masato Tezuka
See Also:
  Serialized Form

Field Summary
`static ToStringStyle` | `DEFAULT_STYLE` The default toString style.
`static ToStringStyle` | `MULTI_LINE_STYLE` The multi line toString style.
`static ToStringStyle` | `NO_FIELD_NAMES_STYLE` The no field names toString style.
`static ToStringStyle` | `SHORT_PREFIX_STYLE` The short prefix toString style.
`static ToStringStyle` | `SIMPLE_STYLE` The simple toString style.

Constructor Summary
`protected` | `ToStringStyle()` Constructor.

Method Summary
`void` | `append(StringBuffer buffer, String fieldName, boolean value)` Append to the `toString` a `boolean` value.
`void` | `append(StringBuffer buffer, String fieldName, boolean[] array, Boolean fullDetail)` Append to the `toString` a `boolean` array.
`void` | `append(StringBuffer buffer, String fieldName, byte value)` Append to the `toString` a `byte` value.
`void` | `append(StringBuffer buffer, String fieldName, byte[] array, Boolean fullDetail)` Append to the `toString` a `byte` array.
`void` | `append(StringBuffer buffer, String fieldName, char value)` Append to the `toString` a `char` value.
`void` | `append(StringBuffer buffer, String fieldName, char[] array, Boolean fullDetail)` Append to the `toString` a `char` array.
`void` | `append(StringBuffer buffer, String fieldName, double value)` Append to the `toString` a `double` value.
`void` | `append(StringBuffer buffer, String fieldName, double[] array, Boolean fullDetail)` Append to the `toString` a `double` array.
`void` | `append(StringBuffer buffer, String fieldName, float value)` Append to the `toString` a `float` value.
`void` | `append(StringBuffer buffer, String fieldName, float[] array, Boolean fullDetail)` Append to the `toString` a `float` array.
`void` | `append(StringBuffer buffer, String fieldName, int value)` Append to the `toString` an `int` value.
`void` | `append(StringBuffer buffer, String fieldName, int[] array, Boolean fullDetail)` Append to the `toString` an `int` array.
`void` | `append(StringBuffer buffer, String fieldName, long value)` Append to the `toString` a `long` value.
`void` | `append(StringBuffer buffer, String fieldName, long[] array, Boolean fullDetail)` Append to the `toString` a `long` array.
`void` | `append(StringBuffer buffer, String fieldName, Object[] array, Boolean fullDetail)` Append to the `toString` an `Object` array.
`void` | `append(StringBuffer buffer, String fieldName, Object value, Boolean fullDetail)` Append to the `toString` an `Object` value, printing the full `toString` of the `Object` passed in.
`void` | `append(StringBuffer buffer, String fieldName, short value)` Append to the `toString` a `short` value.
`void` | `append(StringBuffer buffer, String fieldName, short[] array, Boolean fullDetail)` Append to the `toString` a `short` array.
`protected void` | `appendClassName(StringBuffer buffer, Object object)` Append to the `toString` the class name.
`protected void` | `appendContentEnd(StringBuffer buffer)` Append to the `toString` the content end.
`protected void` | `appendContentStart(StringBuffer buffer)` Append to the `toString` the content start.
`protected void` | `appendCyclicObject(StringBuffer buffer, String fieldName, Object value)` Append to the `toString` an `Object` value that has been detected to participate in a cycle.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, boolean value)` Append to the `toString` a `boolean` value.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, boolean[] array)` Append to the `toString` the detail of a `boolean` array.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, byte value)` Append to the `toString` a `byte` value.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, byte[] array)` Append to the `toString` the detail of a `byte` array.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, char value)` Append to the `toString` a `char` value.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, char[] array)` Append to the `toString` the detail of a `char` array.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, Collection coll)` Append to the `toString` a `Collection`.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, double value)` Append to the `toString` a `double` value.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, double[] array)` Append to the `toString` the detail of a `double` array.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, float value)` Append to the `toString` a `float` value.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, float[] array)` Append to the `toString` the detail of a `float` array.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, int value)` Append to the `toString` an `int` value.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, int[] array)` Append to the `toString` the detail of an `int` array.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, long value)` Append to the `toString` a `long` value.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, long[] array)` Append to the `toString` the detail of a `long` array.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, Map map)` Append to the `toString` a `Map`.``
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, Object value)` Append to the `toString` an `Object` value, printing the full detail of the `Object`.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, Object[] array)` Append to the `toString` the detail of an `Object` array.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, short value)` Append to the `toString` a `short` value.
`protected void` | `appendDetail(StringBuffer buffer, String fieldName, short[] array)` Append to the `toString` the detail of a `short` array.
`void` | `appendEnd(StringBuffer buffer, Object object)` Append to the `toString` the end of data indicator.
`protected void` | `appendFieldEnd(StringBuffer buffer, String fieldName)` Append to the `toString`the field end.``
`protected void` | `appendFieldSeparator(StringBuffer buffer)` Append to the `toString` the field separator.
`protected void` | `appendFieldStart(StringBuffer buffer, String fieldName)` Append to the `toString` the field start.
`protected void` | `appendIdentityHashCode(StringBuffer buffer, Object object)` Append the `System.identityHashCode(java.lang.Object)`.
`protected void` | `appendInternal(StringBuffer buffer, String fieldName, Object value, boolean detail)` Append to the `toString` an `Object`, correctly interpreting its type.
`protected void` | `appendNullText(StringBuffer buffer, String fieldName)` Append to the `toString` an indicator for `null`.
`void` | `appendStart(StringBuffer buffer, Object object)` Append to the `toString` the start of data indicator.
`protected void` | `appendSummary(StringBuffer buffer, String fieldName, boolean[] array)` Append to the `toString` a summary of a `boolean` array.
`protected void` | `appendSummary(StringBuffer buffer, String fieldName, byte[] array)` Append to the `toString` a summary of a `byte` array.
`protected void` | `appendSummary(StringBuffer buffer, String fieldName, char[] array)` Append to the `toString` a summary of a `char` array.
`protected void` | `appendSummary(StringBuffer buffer, String fieldName, double[] array)` Append to the `toString` a summary of a `double` array.
`protected void` | `appendSummary(StringBuffer buffer, String fieldName, float[] array)` Append to the `toString` a summary of a `float` array.
`protected void` | `appendSummary(StringBuffer buffer, String fieldName, int[] array)` Append to the `toString` a summary of an `int` array.
`protected void` | `appendSummary(StringBuffer buffer, String fieldName, long[] array)` Append to the `toString` a summary of a `long` array.
`protected void` | `appendSummary(StringBuffer buffer, String fieldName, Object value)` Append to the `toString` an `Object` value, printing a summary of the `Object`.
`protected void` | `appendSummary(StringBuffer buffer, String fieldName, Object[] array)` Append to the `toString` a summary of an `Object` array.
`protected void` | `appendSummary(StringBuffer buffer, String fieldName, short[] array)` Append to the `toString` a summary of a `short` array.
`protected void` | `appendSummarySize(StringBuffer buffer, String fieldName, int size)` Append to the `toString` a size summary.
`void` | `appendSuper(StringBuffer buffer, String superToString)` Append to the `toString` the superclass toString.
`void` | `appendToString(StringBuffer buffer, String toString)` Append to the `toString` another toString.
`protected String` | `getArrayEnd()` Gets the array end text.
`protected String` | `getArraySeparator()` Gets the array separator text.
`protected String` | `getArrayStart()` Gets the array start text.
`protected String` | `getContentEnd()` Gets the content end text.
`protected String` | `getContentStart()` Gets the content start text.
`protected String` | `getFieldNameValueSeparator()` Gets the field name value separator text.
`protected String` | `getFieldSeparator()` Gets the field separator text.
`protected String` | `getNullText()` Gets the text to output when `null` found.
`protected String` | `getShortClassName(Class cls)` Gets the short class name for a class.
`protected String` | `getSizeEndText()` Gets the end text to output when a `Collection`, `Map` or array size is output.
`protected String` | `getSizeStartText()` Gets the start text to output when a `Collection`, `Map` or array size is output.
`protected String` | `getSummaryObjectEndText()` Gets the end text to output when an `Object` is output in summary mode.
`protected String` | `getSummaryObjectStartText()` Gets the start text to output when an `Object` is output in summary mode.
`protected boolean` | `isArrayContentDetail()` Gets whether to output array content detail.
`protected boolean` | `isDefaultFullDetail()` Gets whether to use full detail when the caller doesn't specify.
`protected boolean` | `isFieldSeparatorAtEnd()` Gets whether the field separator should be added at the end of each buffer.
`protected boolean` | `isFieldSeparatorAtStart()` Gets whether the field separator should be added at the start of each buffer.
`protected boolean` | `isFullDetail(Boolean fullDetailRequest)` Is this field to be output in full detail.
`protected boolean` | `isShortClassName()` Deprecated. Use `isUseShortClassName()` Method will be removed in Commons Lang 3.0.
`protected boolean` | `isUseClassName()` Gets whether to use the class name.
`protected boolean` | `isUseFieldNames()` Gets whether to use the field names passed in.
`protected boolean` | `isUseIdentityHashCode()` Gets whether to use the identity hash code.
`protected boolean` | `isUseShortClassName()` Gets whether to output short or long class names.
`protected void` | `reflectionAppendArrayDetail(StringBuffer buffer, String fieldName, Object array)` Append to the `toString` the detail of an array type.
`protected void` | `removeLastFieldSeparator(StringBuffer buffer)` Remove the last field separator from the buffer.
`protected void` | `setArrayContentDetail(boolean arrayContentDetail)` Sets whether to output array content detail.
`protected void` | `setArrayEnd(String arrayEnd)` Sets the array end text.
`protected void` | `setArraySeparator(String arraySeparator)` Sets the array separator text.
`protected void` | `setArrayStart(String arrayStart)` Sets the array start text.
`protected void` | `setContentEnd(String contentEnd)` Sets the content end text.
`protected void` | `setContentStart(String contentStart)` Sets the content start text.
`protected void` | `setDefaultFullDetail(boolean defaultFullDetail)` Sets whether to use full detail when the caller doesn't specify.
`protected void` | `setFieldNameValueSeparator(String fieldNameValueSeparator)` Sets the field name value separator text.
`protected void` | `setFieldSeparator(String fieldSeparator)` Sets the field separator text.
`protected void` | `setFieldSeparatorAtEnd(boolean fieldSeparatorAtEnd)` Sets whether the field separator should be added at the end of each buffer.
`protected void` | `setFieldSeparatorAtStart(boolean fieldSeparatorAtStart)` Sets whether the field separator should be added at the start of each buffer.
`protected void` | `setNullText(String nullText)` Sets the text to output when `null` found.
`protected void` | `setShortClassName(boolean shortClassName)` Deprecated. Use `setUseShortClassName(boolean)` Method will be removed in Commons Lang 3.0.
`protected void` | `setSizeEndText(String sizeEndText)` Sets the end text to output when a `Collection`, `Map` or array size is output.
`protected void` | `setSizeStartText(String sizeStartText)` Sets the start text to output when a `Collection`, `Map` or array size is output.
`protected void` | `setSummaryObjectEndText(String summaryObjectEndText)` Sets the end text to output when an `Object` is output in summary mode.
`protected void` | `setSummaryObjectStartText(String summaryObjectStartText)` Sets the start text to output when an `Object` is output in summary mode.
`protected void` | `setUseClassName(boolean useClassName)` Sets whether to use the class name.
`protected void` | `setUseFieldNames(boolean useFieldNames)` Sets whether to use the field names passed in.
`protected void` | `setUseIdentityHashCode(boolean useIdentityHashCode)` Sets whether to use the identity hash code.
`protected void` | `setUseShortClassName(boolean useShortClassName)` Sets whether to output short or long class names.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### DEFAULT_STYLE

    public static final ToStringStyle DEFAULT_STYLE

  The default toString style. Using the Using the `Person` example from `ToStringBuilder`, the output would look like this:

       Person@182f0db[name=John Doe,age=33,smoker=false]

### MULTI_LINE_STYLE

    public static final ToStringStyle MULTI_LINE_STYLE

  The multi line toString style. Using the Using the `Person` example from `ToStringBuilder`, the output would look like this:

       Person@182f0db[
         name=John Doe
         age=33
         smoker=false
       ]

### NO_FIELD_NAMES_STYLE

    public static final ToStringStyle NO_FIELD_NAMES_STYLE

  The no field names toString style. Using the Using the `Person` example from `ToStringBuilder`, the output would look like this:

       Person@182f0db[John Doe,33,false]

### SHORT_PREFIX_STYLE

    public static final ToStringStyle SHORT_PREFIX_STYLE

  The short prefix toString style. Using the `Person` example from `ToStringBuilder`, the output would look like this:

       Person[name=John Doe,age=33,smoker=false]

  Since:
    2.1

### SIMPLE_STYLE

    public static final ToStringStyle SIMPLE_STYLE

  The simple toString style. Using the Using the `Person` example from `ToStringBuilder`, the output would look like this:

       John Doe,33,false

Constructor Detail

### ToStringStyle

    protected ToStringStyle()

  Constructor.

Method Detail

### appendSuper

    public void appendSuper(StringBuffer buffer,
                            String superToString)

  Append to the `toString` the superclass toString.

  NOTE: It assumes that the toString has been created from the same ToStringStyle.

  A `null` `superToString` is ignored.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `superToString` - the `super.toString()`
  Since:
    2.0

### appendToString

    public void appendToString(StringBuffer buffer,
                               String toString)

  Append to the `toString` another toString.

  NOTE: It assumes that the toString has been created from the same ToStringStyle.

  A `null` `toString` is ignored.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `toString` - the additional `toString`
  Since:
    2.0

### appendStart

    public void appendStart(StringBuffer buffer,
                            Object object)

  Append to the `toString` the start of data indicator.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `object` - the `Object` to build a `toString` for

### appendEnd

    public void appendEnd(StringBuffer buffer,
                          Object object)

  Append to the `toString` the end of data indicator.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `object` - the `Object` to build a `toString` for.

### removeLastFieldSeparator

    protected void removeLastFieldSeparator(StringBuffer buffer)

  Remove the last field separator from the buffer.

  Parameters:
    `buffer` - the `StringBuffer` to populate
  Since:
    2.0

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       Object value,
                       Boolean fullDetail)

  Append to the `toString` an `Object` value, printing the full `toString` of the `Object` passed in.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `value` - the value to add to the `toString`
    `fullDetail` - `true` for detail, `false` for summary info, `null` for style decides

### appendInternal

    protected void appendInternal(StringBuffer buffer,
                                  String fieldName,
                                  Object value,
                                  boolean detail)

  Append to the `toString` an `Object`, correctly interpreting its type.

  This method performs the main lookup by Class type to correctly route arrays, `Collections`, `Maps` and `Objects` to the appropriate method.

  Either detail or summary views can be specified.

  If a cycle is detected, an object will be appended with the `Object.toString()` format.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `value` - the value to add to the `toString`, not `null`
    `detail` - output detail or not

### appendCyclicObject

    protected void appendCyclicObject(StringBuffer buffer,
                                      String fieldName,
                                      Object value)

  Append to the `toString` an `Object` value that has been detected to participate in a cycle. This implementation will print the standard string value of the value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `value` - the value to add to the `toString`, not `null`
  Since:
    2.2

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                Object value)

  Append to the `toString` an `Object` value, printing the full detail of the `Object`.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `value` - the value to add to the `toString`, not `null`

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                Collection coll)

  Append to the `toString` a `Collection`.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `coll` - the `Collection` to add to the `toString`, not `null`

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                Map map)

  Append to the `toString` a `Map`.``

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `map` - the `Map` to add to the `toString`, not `null`

### appendSummary

    protected void appendSummary(StringBuffer buffer,
                                 String fieldName,
                                 Object value)

  Append to the `toString` an `Object` value, printing a summary of the `Object`.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `value` - the value to add to the `toString`, not `null`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       long value)

  Append to the `toString` a `long` value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `value` - the value to add to the `toString`

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                long value)

  Append to the `toString` a `long` value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `value` - the value to add to the `toString`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       int value)

  Append to the `toString` an `int` value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `value` - the value to add to the `toString`

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                int value)

  Append to the `toString` an `int` value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `value` - the value to add to the `toString`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       short value)

  Append to the `toString` a `short` value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `value` - the value to add to the `toString`

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                short value)

  Append to the `toString` a `short` value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `value` - the value to add to the `toString`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       byte value)

  Append to the `toString` a `byte` value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `value` - the value to add to the `toString`

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                byte value)

  Append to the `toString` a `byte` value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `value` - the value to add to the `toString`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       char value)

  Append to the `toString` a `char` value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `value` - the value to add to the `toString`

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                char value)

  Append to the `toString` a `char` value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `value` - the value to add to the `toString`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       double value)

  Append to the `toString` a `double` value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `value` - the value to add to the `toString`

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                double value)

  Append to the `toString` a `double` value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `value` - the value to add to the `toString`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       float value)

  Append to the `toString` a `float` value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `value` - the value to add to the `toString`

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                float value)

  Append to the `toString` a `float` value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `value` - the value to add to the `toString`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       boolean value)

  Append to the `toString` a `boolean` value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `value` - the value to add to the `toString`

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                boolean value)

  Append to the `toString` a `boolean` value.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `value` - the value to add to the `toString`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       Object[] array,
                       Boolean fullDetail)

  Append to the `toString` an `Object` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `array` - the array to add to the toString
    `fullDetail` - `true` for detail, `false` for summary info, `null` for style decides

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                Object[] array)

  Append to the `toString` the detail of an `Object` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### reflectionAppendArrayDetail

    protected void reflectionAppendArrayDetail(StringBuffer buffer,
                                               String fieldName,
                                               Object array)

  Append to the `toString` the detail of an array type.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`
  Since:
    2.0

### appendSummary

    protected void appendSummary(StringBuffer buffer,
                                 String fieldName,
                                 Object[] array)

  Append to the `toString` a summary of an `Object` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       long[] array,
                       Boolean fullDetail)

  Append to the `toString` a `long` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `array` - the array to add to the `toString`
    `fullDetail` - `true` for detail, `false` for summary info, `null` for style decides

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                long[] array)

  Append to the `toString` the detail of a `long` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### appendSummary

    protected void appendSummary(StringBuffer buffer,
                                 String fieldName,
                                 long[] array)

  Append to the `toString` a summary of a `long` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       int[] array,
                       Boolean fullDetail)

  Append to the `toString` an `int` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `array` - the array to add to the `toString`
    `fullDetail` - `true` for detail, `false` for summary info, `null` for style decides

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                int[] array)

  Append to the `toString` the detail of an `int` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### appendSummary

    protected void appendSummary(StringBuffer buffer,
                                 String fieldName,
                                 int[] array)

  Append to the `toString` a summary of an `int` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       short[] array,
                       Boolean fullDetail)

  Append to the `toString` a `short` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `array` - the array to add to the `toString`
    `fullDetail` - `true` for detail, `false` for summary info, `null` for style decides

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                short[] array)

  Append to the `toString` the detail of a `short` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### appendSummary

    protected void appendSummary(StringBuffer buffer,
                                 String fieldName,
                                 short[] array)

  Append to the `toString` a summary of a `short` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       byte[] array,
                       Boolean fullDetail)

  Append to the `toString` a `byte` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `array` - the array to add to the `toString`
    `fullDetail` - `true` for detail, `false` for summary info, `null` for style decides

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                byte[] array)

  Append to the `toString` the detail of a `byte` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### appendSummary

    protected void appendSummary(StringBuffer buffer,
                                 String fieldName,
                                 byte[] array)

  Append to the `toString` a summary of a `byte` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       char[] array,
                       Boolean fullDetail)

  Append to the `toString` a `char` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `array` - the array to add to the `toString`
    `fullDetail` - `true` for detail, `false` for summary info, `null` for style decides

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                char[] array)

  Append to the `toString` the detail of a `char` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### appendSummary

    protected void appendSummary(StringBuffer buffer,
                                 String fieldName,
                                 char[] array)

  Append to the `toString` a summary of a `char` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       double[] array,
                       Boolean fullDetail)

  Append to the `toString` a `double` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `array` - the array to add to the toString
    `fullDetail` - `true` for detail, `false` for summary info, `null` for style decides

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                double[] array)

  Append to the `toString` the detail of a `double` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### appendSummary

    protected void appendSummary(StringBuffer buffer,
                                 String fieldName,
                                 double[] array)

  Append to the `toString` a summary of a `double` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       float[] array,
                       Boolean fullDetail)

  Append to the `toString` a `float` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `array` - the array to add to the toString
    `fullDetail` - `true` for detail, `false` for summary info, `null` for style decides

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                float[] array)

  Append to the `toString` the detail of a `float` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### appendSummary

    protected void appendSummary(StringBuffer buffer,
                                 String fieldName,
                                 float[] array)

  Append to the `toString` a summary of a `float` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### append

    public void append(StringBuffer buffer,
                       String fieldName,
                       boolean[] array,
                       Boolean fullDetail)

  Append to the `toString` a `boolean` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name
    `array` - the array to add to the toString
    `fullDetail` - `true` for detail, `false` for summary info, `null` for style decides

### appendDetail

    protected void appendDetail(StringBuffer buffer,
                                String fieldName,
                                boolean[] array)

  Append to the `toString` the detail of a `boolean` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### appendSummary

    protected void appendSummary(StringBuffer buffer,
                                 String fieldName,
                                 boolean[] array)

  Append to the `toString` a summary of a `boolean` array.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `array` - the array to add to the `toString`, not `null`

### appendClassName

    protected void appendClassName(StringBuffer buffer,
                                   Object object)

  Append to the `toString` the class name.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `object` - the `Object` whose name to output

### appendIdentityHashCode

    protected void appendIdentityHashCode(StringBuffer buffer,
                                          Object object)

  Append the `System.identityHashCode(java.lang.Object)`.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `object` - the `Object` whose id to output

### appendContentStart

    protected void appendContentStart(StringBuffer buffer)

  Append to the `toString` the content start.

  Parameters:
    `buffer` - the `StringBuffer` to populate

### appendContentEnd

    protected void appendContentEnd(StringBuffer buffer)

  Append to the `toString` the content end.

  Parameters:
    `buffer` - the `StringBuffer` to populate

### appendNullText

    protected void appendNullText(StringBuffer buffer,
                                  String fieldName)

  Append to the `toString` an indicator for `null`.

  The default indicator is `'<null>'`.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended

### appendFieldSeparator

    protected void appendFieldSeparator(StringBuffer buffer)

  Append to the `toString` the field separator.

  Parameters:
    `buffer` - the `StringBuffer` to populate

### appendFieldStart

    protected void appendFieldStart(StringBuffer buffer,
                                    String fieldName)

  Append to the `toString` the field start.

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name

### appendFieldEnd

    protected void appendFieldEnd(StringBuffer buffer,
                                  String fieldName)

  Append to the `toString`the field end.``

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended

### appendSummarySize

    protected void appendSummarySize(StringBuffer buffer,
                                     String fieldName,
                                     int size)

  Append to the `toString` a size summary.

  The size summary is used to summarize the contents of `Collections`, `Maps` and arrays.

  The output consists of a prefix, the passed in size and a suffix.

  The default format is `'<size=n>'`.``

  Parameters:
    `buffer` - the `StringBuffer` to populate
    `fieldName` - the field name, typically not used as already appended
    `size` - the size to append

### isFullDetail

    protected boolean isFullDetail(Boolean fullDetailRequest)

  Is this field to be output in full detail.

  This method converts a detail request into a detail level. The calling code may request full detail (`true`), but a subclass might ignore that and always return `false`. The calling code may pass in `null` indicating that it doesn't care about the detail level. In this case the default detail level is used.

  Parameters:
    `fullDetailRequest` - the detail level requested
  Returns:
    whether full detail is to be shown

### getShortClassName

    protected String getShortClassName(Class cls)

  Gets the short class name for a class.

  The short class name is the classname excluding the package name.

  Parameters:
    `cls` - the `Class` to get the short name of
  Returns:
    the short name

### isUseClassName

    protected boolean isUseClassName()

  Gets whether to use the class name.

  Returns:
    the current useClassName flag

### setUseClassName

    protected void setUseClassName(boolean useClassName)

  Sets whether to use the class name.

  Parameters:
    `useClassName` - the new useClassName flag

### isUseShortClassName

    protected boolean isUseShortClassName()

  Gets whether to output short or long class names.

  Returns:
    the current useShortClassName flag
  Since:
    2.0

### isShortClassName

    protected boolean isShortClassName()

  Deprecated. Use `isUseShortClassName()` Method will be removed in Commons Lang 3.0.

  Gets whether to output short or long class names.

  Returns:
    the current shortClassName flag

### setUseShortClassName

    protected void setUseShortClassName(boolean useShortClassName)

  Sets whether to output short or long class names.

  Parameters:
    `useShortClassName` - the new useShortClassName flag
  Since:
    2.0

### setShortClassName

    protected void setShortClassName(boolean shortClassName)

  Deprecated. Use `setUseShortClassName(boolean)` Method will be removed in Commons Lang 3.0.

  Sets whether to output short or long class names.

  Parameters:
    `shortClassName` - the new shortClassName flag

### isUseIdentityHashCode

    protected boolean isUseIdentityHashCode()

  Gets whether to use the identity hash code.

  Returns:
    the current useIdentityHashCode flag

### setUseIdentityHashCode

    protected void setUseIdentityHashCode(boolean useIdentityHashCode)

  Sets whether to use the identity hash code.

  Parameters:
    `useIdentityHashCode` - the new useIdentityHashCode flag

### isUseFieldNames

    protected boolean isUseFieldNames()

  Gets whether to use the field names passed in.

  Returns:
    the current useFieldNames flag

### setUseFieldNames

    protected void setUseFieldNames(boolean useFieldNames)

  Sets whether to use the field names passed in.

  Parameters:
    `useFieldNames` - the new useFieldNames flag

### isDefaultFullDetail

    protected boolean isDefaultFullDetail()

  Gets whether to use full detail when the caller doesn't specify.

  Returns:
    the current defaultFullDetail flag

### setDefaultFullDetail

    protected void setDefaultFullDetail(boolean defaultFullDetail)

  Sets whether to use full detail when the caller doesn't specify.

  Parameters:
    `defaultFullDetail` - the new defaultFullDetail flag

### isArrayContentDetail

    protected boolean isArrayContentDetail()

  Gets whether to output array content detail.

  Returns:
    the current array content detail setting

### setArrayContentDetail

    protected void setArrayContentDetail(boolean arrayContentDetail)

  Sets whether to output array content detail.

  Parameters:
    `arrayContentDetail` - the new arrayContentDetail flag

### getArrayStart

    protected String getArrayStart()

  Gets the array start text.

  Returns:
    the current array start text

### setArrayStart

    protected void setArrayStart(String arrayStart)

  Sets the array start text.

  `null` is accepted, but will be converted to an empty String.

  Parameters:
    `arrayStart` - the new array start text

### getArrayEnd

    protected String getArrayEnd()

  Gets the array end text.

  Returns:
    the current array end text

### setArrayEnd

    protected void setArrayEnd(String arrayEnd)

  Sets the array end text.

  `null` is accepted, but will be converted to an empty String.

  Parameters:
    `arrayEnd` - the new array end text

### getArraySeparator

    protected String getArraySeparator()

  Gets the array separator text.

  Returns:
    the current array separator text

### setArraySeparator

    protected void setArraySeparator(String arraySeparator)

  Sets the array separator text.

  `null` is accepted, but will be converted to an empty String.

  Parameters:
    `arraySeparator` - the new array separator text

### getContentStart

    protected String getContentStart()

  Gets the content start text.

  Returns:
    the current content start text

### setContentStart

    protected void setContentStart(String contentStart)

  Sets the content start text.

  `null` is accepted, but will be converted to an empty String.

  Parameters:
    `contentStart` - the new content start text

### getContentEnd

    protected String getContentEnd()

  Gets the content end text.

  Returns:
    the current content end text

### setContentEnd

    protected void setContentEnd(String contentEnd)

  Sets the content end text.

  `null` is accepted, but will be converted to an empty String.

  Parameters:
    `contentEnd` - the new content end text

### getFieldNameValueSeparator

    protected String getFieldNameValueSeparator()

  Gets the field name value separator text.

  Returns:
    the current field name value separator text

### setFieldNameValueSeparator

    protected void setFieldNameValueSeparator(String fieldNameValueSeparator)

  Sets the field name value separator text.

  `null` is accepted, but will be converted to an empty String.

  Parameters:
    `fieldNameValueSeparator` - the new field name value separator text

### getFieldSeparator

    protected String getFieldSeparator()

  Gets the field separator text.

  Returns:
    the current field separator text

### setFieldSeparator

    protected void setFieldSeparator(String fieldSeparator)

  Sets the field separator text.

  `null` is accepted, but will be converted to an empty String.

  Parameters:
    `fieldSeparator` - the new field separator text

### isFieldSeparatorAtStart

    protected boolean isFieldSeparatorAtStart()

  Gets whether the field separator should be added at the start of each buffer.

  Returns:
    the fieldSeparatorAtStart flag
  Since:
    2.0

### setFieldSeparatorAtStart

    protected void setFieldSeparatorAtStart(boolean fieldSeparatorAtStart)

  Sets whether the field separator should be added at the start of each buffer.

  Parameters:
    `fieldSeparatorAtStart` - the fieldSeparatorAtStart flag
  Since:
    2.0

### isFieldSeparatorAtEnd

    protected boolean isFieldSeparatorAtEnd()

  Gets whether the field separator should be added at the end of each buffer.

  Returns:
    fieldSeparatorAtEnd flag
  Since:
    2.0

### setFieldSeparatorAtEnd

    protected void setFieldSeparatorAtEnd(boolean fieldSeparatorAtEnd)

  Sets whether the field separator should be added at the end of each buffer.

  Parameters:
    `fieldSeparatorAtEnd` - the fieldSeparatorAtEnd flag
  Since:
    2.0

### getNullText

    protected String getNullText()

  Gets the text to output when `null` found.

  Returns:
    the current text to output when null found

### setNullText

    protected void setNullText(String nullText)

  Sets the text to output when `null` found.

  `null` is accepted, but will be converted to an empty String.

  Parameters:
    `nullText` - the new text to output when null found

### getSizeStartText

    protected String getSizeStartText()

  Gets the start text to output when a `Collection`, `Map` or array size is output.

  This is output before the size value.

  Returns:
    the current start of size text

### setSizeStartText

    protected void setSizeStartText(String sizeStartText)

  Sets the start text to output when a `Collection`, `Map` or array size is output.

  This is output before the size value.

  `null` is accepted, but will be converted to an empty String.

  Parameters:
    `sizeStartText` - the new start of size text

### getSizeEndText

    protected String getSizeEndText()

  Gets the end text to output when a `Collection`, `Map` or array size is output.

  This is output after the size value.

  Returns:
    the current end of size text

### setSizeEndText

    protected void setSizeEndText(String sizeEndText)

  Sets the end text to output when a `Collection`, `Map` or array size is output.

  This is output after the size value.

  `null` is accepted, but will be converted to an empty String.

  Parameters:
    `sizeEndText` - the new end of size text

### getSummaryObjectStartText

    protected String getSummaryObjectStartText()

  Gets the start text to output when an `Object` is output in summary mode.

  This is output before the size value.

  Returns:
    the current start of summary text

### setSummaryObjectStartText

    protected void setSummaryObjectStartText(String summaryObjectStartText)

  Sets the start text to output when an `Object` is output in summary mode.

  This is output before the size value.

  `null` is accepted, but will be converted to an empty String.

  Parameters:
    `summaryObjectStartText` - the new start of summary text

### getSummaryObjectEndText

    protected String getSummaryObjectEndText()

  Gets the end text to output when an `Object` is output in summary mode.

  This is output after the size value.

  Returns:
    the current end of summary text

### setSummaryObjectEndText

    protected void setSummaryObjectEndText(String summaryObjectEndText)

  Sets the end text to output when an `Object` is output in summary mode.

  This is output after the size value.

  `null` is accepted, but will be converted to an empty String.

  Parameters:
    `summaryObjectEndText` - the new end of summary text

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