for (int i = 0, l = descs.length; i < l; i++){ methodConstraints.put( new MethodKey(descs[i].getName(), descs[i].getParameterTypes()), descs[i].getConstraints() ); MethodKey key = new MethodKey( newDescs[i].getName(), newDescs[i].getParameterTypes() ); InvocationConstraints existCons = methodConstraints.get(key);