Here you can find the source of exception(Throwable e)
public static Exception exception(Throwable e)
//package com.java2s; /******************************************************************************* * Copyright (c) 2012 GoPivotal, Inc.//from w w w . jav a 2 s .c o m * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * GoPivotal, Inc. - initial API and implementation *******************************************************************************/ public class Main { public static Exception exception(Throwable e) { if (e instanceof Exception) { return (Exception) e; } else { return new Exception(e); } } }