src/share/classes/com/sun/tools/jdi/SDE.java

*** 180,189 ****
--- 180,194 ----
              } else {
                  return false;
              }
          }
  
+         @Override
+         public int hashCode() {
+             return (lineNumber() * 17) ^ refType.hashCode();
+         }
+ 
          int lineNumber() {
              return stiLineNumber(sti, lti, jplsLine);
          }
  
          /**