001 /* 002 * Created on Mar 19, 2009 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 005 * in compliance with the License. You may obtain a copy of the License at 006 * 007 * http://www.apache.org/licenses/LICENSE-2.0 008 * 009 * Unless required by applicable law or agreed to in writing, software distributed under the License 010 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 011 * or implied. See the License for the specific language governing permissions and limitations under 012 * the License. 013 * 014 * Copyright @2009 the original author or authors. 015 */ 016 package org.fest.reflect.util; 017 018 import java.lang.reflect.InvocationTargetException; 019 020 /** 021 * Understands utility methods related to <code>{@link Throwable}</code>s. 022 * 023 * @author Alex Ruiz 024 * @since 1.2 025 */ 026 public final class Throwables { 027 028 /** 029 * Obtains the target of the given <code>{@link Throwable}</code>. If the <code>Throwable</code> is a 030 * <code>{@link InvocationTargetException}</code>, this method will return the "target exception" (not the cause.) 031 * For other <code>Throwable</code>s, the same instance is returned unmodified. 032 * @param t the given <code>Throwable</code>. 033 * @return the target exception, if applicable. Otherwise, this method returns the same <code>Throwable</code> passed 034 * as argument. 035 */ 036 public static Throwable targetOf(Throwable t) { 037 if (t instanceof InvocationTargetException) 038 return ((InvocationTargetException)t).getTargetException(); 039 return t; 040 } 041 042 private Throwables() {} 043 }