1 /*
2  * Copyright (C) 2017 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 import java.lang.reflect.Method;
18 import java.util.OptionalLong;
19 public class TestMain {
runTest()20   public static void runTest() {
21     // This should be our redefined OptionalLong.
22     OptionalLong ol = OptionalLong.of(123);
23     try {
24       // OptionalLong is a class that is unlikely to be used by the time this test starts.
25       Method foo = OptionalLong.class.getMethod("foo");
26       System.out.println("ol.foo() -> '" + (String)foo.invoke(ol) + "'");
27       System.out.println("ol.toString() -> '" + ol.toString() + "'");
28     } catch (Exception e) {
29       System.out.println(
30           "Exception occured (did something load OptionalLong before this test method!: "
31           + e.toString());
32       e.printStackTrace(System.out);
33     }
34   }
35 }
36