--- a/flys-artifacts/src/main/java/de/intevation/flys/exports/WDifferencesCurveGenerator.java	Tue Oct 11 10:44:12 2011 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/exports/WDifferencesCurveGenerator.java	Tue Oct 11 11:16:40 2011 +0000
@@ -35,12 +35,33 @@
     private static Logger logger =
         Logger.getLogger(WDifferencesCurveGenerator.class);
 
+    /** Key for internationalized title of WDiff charts. */
+    public final static String I18N_WDIFF_TITLE = "chart.w_differences.title";
+
+    /** Default for internationalized title (when no translation found). */
+    public final static String I18N_WDIFF_TITLE_DEFAULT = "Differences";
+
+    /** Key for internationalized title of WDiff charts. */
+    public final static String I18N_WDIFF_2YAXIS_LABEL =
+        "chart.w_differences.yaxis.second.label";
+
+    /** Default for label for second Y-Axis when no translation found. */
+    public final static String I18N_WDIFF_2YAXIS_LABEL_DEFAULT = "W [NN + m]";
+
+    public final static String I18N_WDIFF_SUBTITLE =
+        "chart.w_differences.subtitle";
+
+    public final static String I18N_WDIFF_YAXIS_LABEL =
+        "chart.w_differences.yaxis.label";
+
+    public final static String I18N_WDIFF_YAXIS_LABEL_DEFAULT = "m";
+
 
     /**
      * Get internationalized title for chart.
      */
     public String getChartTitle() {
-        return msg("chart.w_differences.title", "Differences");
+        return msg(I18N_WDIFF_TITLE, I18N_WDIFF_TITLE_DEFAULT);
     }
 
 
@@ -50,7 +71,7 @@
      */
     @Override
     protected String get2YAxisDefaultLabel() {
-        return "W [NN + m]";
+        return I18N_WDIFF_2YAXIS_LABEL_DEFAULT;
     }
 
 
@@ -60,7 +81,7 @@
      */
     @Override
     protected String getChartSubtitleKey() {
-        return "chart.w_differences.subtitle";
+        return I18N_WDIFF_SUBTITLE;
     }
 
 
@@ -69,7 +90,7 @@
      */
     @Override
     protected String get2YAxisLabelKey() {
-        return "chart.w_differences.yaxis.second.label";
+        return I18N_WDIFF_2YAXIS_LABEL;
     }
 
 
@@ -83,8 +104,8 @@
         String unit = FLYSUtils.getRiver(flys).getWstUnit().getName();
 
         return msg(
-            "chart.w_differences.yaxis.label",
-            "m",
+            I18N_WDIFF_YAXIS_LABEL,
+            I18N_WDIFF_YAXIS_LABEL_DEFAULT,
             new Object[] { unit });
     }