Here you can find the source of castAndThrow(Throwable e)
@SuppressWarnings("unchecked") private static <T extends Throwable> void castAndThrow(Throwable e) throws T
//package com.java2s; /*//from w w w. j a v a 2 s . c o m * Copyright 2013-2015 Cojen.org * * 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. */ public class Main { @SuppressWarnings("unchecked") private static <T extends Throwable> void castAndThrow(Throwable e) throws T { throw (T) e; } }