@Test public void testSubtract () { try { mValue.subtract (mValue); fail ("no exception"); } catch (ExecutionException ee) { } }
Value subtract (Value v) { throw newOperandException ("-"); }
Value { Value subtract (Value v) { throw newOperandException ("-"); } }
Value { Value subtract (Value v) { throw newOperandException ("-"); }  }
Value { Value subtract (Value v) { throw newOperandException ("-"); }   }
Value { Value subtract (Value v) { throw newOperandException ("-"); }    }