Bump CSVFormat#serialVersionUID from 1 to 2

Javadoc Serialization in CSVFormat is not supported from one version to
the next.

Author: garydgregory

pom.xml

@@ -180,7 +180,7 @@
     <commons.pmd-impl.version>6.50.0</commons.pmd-impl.version>
     <commons.jacoco.version>0.8.8</commons.jacoco.version>
     <commons.spotbugs.version>4.7.2.1</commons.spotbugs.version>
-    <commons.spotbugs.impl.version>4.7.2</commons.spotbugs.impl.version>
+    <commons.spotbugs.impl.version>4.7.3</commons.spotbugs.impl.version>
     <commons.japicmp.version>0.16.0</commons.japicmp.version>
     <commons.javadoc.version>3.4.1</commons.javadoc.version>
     <commons.biz.aQute.bndlib.version>6.3.1</commons.biz.aQute.bndlib.version>

src/changes/changes.xml

@@ -50,6 +50,9 @@
       <action issue="CSV-274" type="fix" dev="ggregory" due-to="Peter Hull, Bruno P. Kinoshita, Gary Gregory">Add comments to iterator() and stream() #270.</action>
       <action issue="CSV-290" type="fix" dev="ggregory" due-to="angusdev, Gary Gregory">Fix wrong assumptions in PostgreSQL formats #265.</action>
       <action                 type="fix" dev="ggregory" due-to="Mykola Faryma">Validate input to setDelimiter(String) for empty string #266.</action>
+      <action                 type="fix" dev="ggregory" due-to="Dependabot">Bump CSVFormat#serialVersionUID from 1 to 2.</action>
+      <!-- REMOVE -->
+      <action                 type="remove" dev="ggregory">Serialization in CSVFormat is not supported from one version to the next.</action>
       <!-- ADD -->
       <action issue="CSV-291" type="add" dev="ggregory" due-to="Gary Gregory">Make CSVRecord#values() public.</action>
       <action issue="CSV-264" type="add" dev="ggregory" due-to="Sagar Tiwari, Seth Falco, Alex Herbert, Gary Gregory">Add DuplicateHeaderMode for flexibility with header strictness. #114.</action>

src/main/java/org/apache/commons/csv/CSVFormat.java

@@ -154,8 +154,23 @@
  * This makes your code impervious to changes in column order in the CSV file.
  * </p>
  *
- * <h2>Notes</h2>
+ * <h2>Serialization</h2>
+ * <p>
+ *   This class implements the {@link Serializable} interface with the following caveats:
+ * </p>
+ * <ul>
+ *   <li>This class will no longer implement Serializable in 2.0.</li>
+ *   <li>Serialization is not supported from one version to the next.</li>
+ * </ul>
+ * <p>
+ *   The {@code serialVersionUID} values are:
+ * </p>
+ * <ul>
+ *   <li>Version 1.10.0: {@code 2L}</li>
+ *   <li>Version 1.9.0 through 1.0: {@code 1L}</li>
+ * </ul>
  *
+ * <h2>Notes</h2>
  * <p>
  * This class is immutable.
  * </p>
@@ -1137,7 +1152,7 @@ public CSVFormat getFormat() {
      */
     public static final CSVFormat RFC4180 = DEFAULT.builder().setIgnoreEmptyLines(false).build();
 
-    private static final long serialVersionUID = 1L;
+    private static final long serialVersionUID = 2L;
 
     /**
      * Tab-delimited format.
@@ -1222,7 +1237,7 @@ private static boolean isTrimChar(final char ch) {
         return ch <= SP;
     }
 
-    private static boolean isTrimChar(final CharSequence charSequence, int pos) {
+    private static boolean isTrimChar(final CharSequence charSequence, final int pos) {
         return isTrimChar(charSequence.charAt(pos));
     }