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Java example source code file (InvokeSeveralWays.java)
The InvokeSeveralWays.java Java example source code/* * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ import java.lang.reflect.InvocationTargetException; /** * Tries various ways of ultimately invoking MethodSupplier.m(), * except that m has been made inaccessible and some exception should be * thrown instead. */ public class InvokeSeveralWays { public static int test(String args[], Class expected) throws Exception { int failures = 0; try { Class.forName("Invoker").getMethod("invoke").invoke(null); System.out.println("FAIL: No exception throw, probably failed to load modified bytecodes for MethodSupplier"); failures++; } catch (InvocationTargetException e) { Throwable c = e.getCause(); if (expected.isInstance(c)) System.out.println("EXPECTED: " + expected.getName() + ", "+ c); else { failures++; System.out.println("FAIL: Unexpected wrapped exception " + c); e.printStackTrace(System.out); } } catch (Throwable e) { failures++; System.out.println("FAIL: Unexpected exception has been caught " + e); e.printStackTrace(System.out); } System.out.println(); try { Class.forName("Invoker").getMethod("invoke2").invoke(null); System.out.println("FAIL: No exception throw, probably failed to load modified bytecodes for MethodSupplier"); failures++; } catch (InvocationTargetException e) { Throwable c = e.getCause(); if (expected.isInstance(c)) System.out.println("EXPECTED: " + expected.getName() + ", "+ c); else { failures++; System.out.println("FAIL: Unexpected wrapped exception " + c); e.printStackTrace(System.out); } } catch (Throwable e) { failures++; System.out.println("FAIL: Unexpected exception has been caught " + e); e.printStackTrace(System.out); } System.out.println(); try { Invoker.invoke(); System.out.println("FAIL: No exception throw, probably failed to load modified bytecodes for MethodSupplier"); failures++; } catch (Throwable e) { if (expected.isInstance(e)) System.out.println("EXPECTED: " + expected.getName() + ", "+ e); else { failures++; System.out.println("FAIL: Unexpected exception has been caught " + e); e.printStackTrace(System.out); } } System.out.println(); try { Invoker.invoke2(); System.out.println("FAIL: No exception throw, probably failed to load modified bytecodes for MethodSupplier"); failures++; } catch (Throwable e) { if (expected.isInstance(e)) System.out.println("EXPECTED: " + expected.getName() + ", "+ e); else { failures++; System.out.println("FAIL: Unexpected exception has been caught " + e); e.printStackTrace(System.out); } } System.out.println(); if (failures > 0) { System.out.println("Saw " + failures + " failures"); } return failures; } } Other Java examples (source code examples)Here is a short list of links related to this Java InvokeSeveralWays.java source code file: |
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