Refactor magic strings into constants.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1397527 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

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

@@ -29,6 +29,10 @@
  */
 public class CSVFormat implements Serializable {
 
+    private static final String CR = "\n";
+
+    private static final char ESCAPE = '\\';
+
     private static final char TAB = '\t';
 
     private static final char DOUBLE_QUOTE = '"';
@@ -132,8 +136,8 @@ public class CSVFormat implements Serializable {
     public static final CSVFormat MYSQL =
             PRISTINE
             .withDelimiter(TAB)
-            .withEscape('\\')
-            .withLineSeparator("\n");
+            .withEscape(ESCAPE)
+            .withLineSeparator(CR);
 
     /**
      * Creates a customized CSV format.