src/share/classes/sun/reflect/generics/tree/ClassTypeSignature.java

@@ -31,11 +31,11 @@
 
 /**
  * AST representing class types.
  */
 public class ClassTypeSignature implements FieldTypeSignature {
-    private List<SimpleClassTypeSignature> path;
+    private final List<SimpleClassTypeSignature> path;
 
 
     private ClassTypeSignature(List<SimpleClassTypeSignature> p) {
         path = p;
     }