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 // An exception that doesn't have a <init>(String) method. 18 class BadError extends Error { 19 public BadError() { 20 super("This is bad by convention"); 21 } 22 } 23 24 // A class that throws BadException during static initialization. 25 class BadInit { 26 static int dummy; 27 static { 28 System.out.println("Static Init"); 29 if (true) { 30 throw new BadError(); 31 } 32 } 33 } 34 35 /** 36 * Exceptions across method calls 37 */ 38 public class Main { 39 public static void exceptions_007() { 40 try { 41 catchAndRethrow(); 42 } catch (NullPointerException npe) { 43 System.out.print("Got an NPE: "); 44 System.out.println(npe.getMessage()); 45 npe.printStackTrace(); 46 } 47 } 48 public static void main (String args[]) { 49 exceptions_007(); 50 exceptionsRethrowClassInitFailure(); 51 } 52 53 private static void catchAndRethrow() { 54 try { 55 throwNullPointerException(); 56 } catch (NullPointerException npe) { 57 NullPointerException npe2; 58 npe2 = new NullPointerException("second throw"); 59 npe2.initCause(npe); 60 throw npe2; 61 } 62 } 63 64 private static void throwNullPointerException() { 65 throw new NullPointerException("first throw"); 66 } 67 68 private static void exceptionsRethrowClassInitFailure() { 69 try { 70 try { 71 BadInit.dummy = 1; 72 throw new IllegalStateException("Should not reach here."); 73 } catch (BadError e) { 74 System.out.println(e); 75 } 76 77 // Check if it works a second time. 78 79 try { 80 BadInit.dummy = 1; 81 throw new IllegalStateException("Should not reach here."); 82 } catch (BadError e) { 83 System.out.println(e); 84 } 85 } catch (Exception error) { 86 error.printStackTrace(); 87 } 88 } 89 } 90
