1 /* 2 * Copyright (C) 2021 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 class SuperClass { doInvoke()18 public int doInvoke() { 19 synchronized (this) { 20 return 42; 21 } 22 } 23 } 24 25 public class Main extends SuperClass { 26 main(String[] args)27 public static void main(String[] args) { 28 Main m = new Main(); 29 int value = doInvokeTypedSuperClass(m); 30 if (value != 43) { 31 throw new Error("Expected 43, got " + value); 32 } 33 } 34 doInvokeTypedSuperClass(SuperClass sc)35 public static int doInvokeTypedSuperClass(SuperClass sc) { 36 return sc.doInvoke(); 37 } 38 doInvoke()39 public int doInvoke() { 40 synchronized (this) { 41 return super.doInvoke() + 1; 42 } 43 } 44 } 45