Java exec execute(String[] commandArray)

Description

execute

License

Open Source License

Declaration

public static BufferedReader execute(String[] commandArray) throws IOException, InterruptedException 

Method Source Code

//package com.java2s;
/*//from   w w w .  j  a  va 2 s .  c  om
 * RuntimeUtility.java - GUI for converting raster images to SVG using AutoTrace
 *
 * Copyright (C) 2003 Robert McKinnon
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
    public static void execute(String command) throws IOException, InterruptedException {
        Runtime runtime = Runtime.getRuntime();
        Process process = runtime.exec(command);
        waitForCompletion(process);
    }

    public static BufferedReader execute(String[] commandArray) throws IOException, InterruptedException {
        Runtime runtime = Runtime.getRuntime();
        Process process = runtime.exec(commandArray, null, null);
        waitForCompletion(process);
        return new BufferedReader(new InputStreamReader(process.getInputStream()));
    }

    private static void waitForCompletion(Process process) throws InterruptedException, IOException {
        BufferedReader errorReader = new BufferedReader(new InputStreamReader(process.getErrorStream()));
        process.waitFor();
        if (errorReader.ready()) {
            StringBuffer buffer = new StringBuffer(errorReader.readLine());
            while (errorReader.ready()) {
                buffer.append('\n' + errorReader.readLine());
            }
            errorReader.close();
            String message = buffer.toString();
            if (message.indexOf("premature end of file") == -1) {
                throw new RuntimeException(message);
            }
        }
    }
}

Related

1. execute(String... cmdarray)
2. execute(String... command)
3. execute(String... commands)
4. execute(String[] _command, String _workingDir)
5. execute(String[] command, File directory, String[] env)
6. execute(Template template, Map rootMap)
7. execute1(final String appPath)
8. execute2(final String appPath)
9. executeAndWait(String command)