src/share/classes/com/sun/tools/javac/code/Source.java

@@ -108,10 +108,13 @@
         if (this.compareTo(JDK1_4) >= 0) return Target.JDK1_4;
         return Target.JDK1_1;
     }
 
     /** Allow encoding errors, giving only warnings. */
+    public boolean allowStringsInSwitch() {
+        return compareTo(JDK1_7) >= 0;
+    }
     public boolean allowEncodingErrors() {
         return compareTo(JDK1_6) < 0;
     }
     public boolean allowAsserts() {
         return compareTo(JDK1_4) >= 0;