Main.java revision f6c387128427e121477c1b32ad35cdcaa5101ba3 
1/*
2 * Copyright (C) 2007 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/**
18 * Exceptions across method calls
19 */
20public class Main {
21    public static void main (String args[]) {
22        try {
23            catchAndRethrow();
24        } catch (NullPointerException npe) {
25            System.out.print("Got an NPE: ");
26            System.out.println(npe.getMessage());
27            npe.printStackTrace();
28        }
29    }
30
31    private static void catchAndRethrow() {
32        try {
33            throwNullPointerException();
34        } catch (NullPointerException npe) {
35            NullPointerException npe2;
36            npe2 = new NullPointerException("second throw");
37            npe2.initCause(npe);
38            throw npe2;
39        }
40    }
41
42    private static void throwNullPointerException() {
43        throw new NullPointerException("first throw");
44    }
45}
46