content: /*
   * Created on Mar 19, 2009
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
   * the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
   * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
   * specific language governing permissions and limitations under the License.
   *
   * Copyright @2009-2013 the original author or authors.
   */
  package org.fest.reflect.util;
  
  import org.jetbrains.annotations.Nullable;
  import java.lang.reflect.InvocationTargetException;
  
  /**
   * Utility methods related to {@code Throwable}s.
   *
   * @author Alex Ruiz
   * @since 1.2
   */
  public final class Throwables {
    private Throwables() {
    }
  
    /**
     * Obtains the target of the given {@code Throwable}. If the {@code Throwable} is a {@code InvocationTargetException},
     * this method will return the "target exception" (not the cause.) For other {@code Throwable}s, the same instance is
     * returned unmodified.
     *
     * @param t the given {@code Throwable}.
     * @return the target exception, if applicable. Otherwise, this method returns the same {@code Throwable} passed as
     *         argument.
     * @see InvocationTargetException
     */
    public static @Nullable Throwable targetOf(@Nullable Throwable t) {
      if (t instanceof InvocationTargetException) {
        return ((InvocationTargetException) t).getTargetException();
      }
      return t;
    }
  }
  