JAL-3141 Made more constants

diff --git a/src/jalview/io/BackupFiles.java b/src/jalview/io/BackupFiles.java
index 3fc57fc..7a026f9 100644 (file)
--- a/src/jalview/io/BackupFiles.java
+++ b/src/jalview/io/BackupFiles.java
@@ -28,25 +28,25 @@ public class BackupFiles
 {
 
   // labels for saved params in Cache and .jalview_properties
-  private static String NS = "BACKUPFILES";
+  private static final String NS = "BACKUPFILES";
 
-  public static String ENABLED = NS + "_ENABLED";
+  public static final String ENABLED = NS + "_ENABLED";
 
-  public static String SUFFIX = NS + "_SUFFIX";
+  public static final String SUFFIX = NS + "_SUFFIX";
 
-  public static String NO_MAX = NS + "_NO_MAX";
+  public static final String NO_MAX = NS + "_NO_MAX";
 
-  public static String ROLL_MAX = NS + "_ROLL_MAX";
+  public static final String ROLL_MAX = NS + "_ROLL_MAX";
 
-  public static String SUFFIX_DIGITS = NS + "_SUFFIX_DIGITS";
+  public static final String SUFFIX_DIGITS = NS + "_SUFFIX_DIGITS";
 
   public static final String NUM_PLACEHOLDER = "%n";
 
-  public static String REVERSE_ORDER = NS + "_REVERSE_ORDER";
+  public static final String REVERSE_ORDER = NS + "_REVERSE_ORDER";
 
-  public static String CONFIRM_DELETE_OLD = NS + "_CONFIRM_DELETE_OLD";
+  public static final String CONFIRM_DELETE_OLD = NS + "_CONFIRM_DELETE_OLD";
 
-  private static String DEFAULT_TEMP_FILE = "jalview_temp_file_" + NS;
+  private static final String DEFAULT_TEMP_FILE = "jalview_temp_file_" + NS;
 
   // file - File object to be backed up and then updated (written over)
   private File file;