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 */ 20 public class Main { main(String args[])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 catchAndRethrow()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 throwNullPointerException()42 private static void throwNullPointerException() { 43 throw new NullPointerException("first throw"); 44 } 45 } 46