Here you can find the source of exec(File dir, String cmd)
public static Process exec(File dir, String cmd) throws IOException
//package com.java2s; /**//from w w w.j a v a 2 s. co m * Copyright (c) 2000-present Liferay, Inc. All rights reserved. * * This library is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by the Free * Software Foundation; either version 2.1 of the License, or (at your option) * any later version. * * This library 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 Lesser General Public License for more * details. */ import java.io.File; import java.io.IOException; public class Main { public static Process exec(File dir, String cmd) throws IOException { String fullCmd = dir.getPath() + "/" + cmd; Runtime runtime = Runtime.getRuntime(); return runtime.exec(fullCmd); } public static Process exec(String fullCmd) throws IOException { Runtime runtime = Runtime.getRuntime(); return runtime.exec(fullCmd); } }