Java exec execute(String command)

Description

execute

License

Open Source License

Declaration

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

Method Source Code

//package com.java2s;
/*/*from   w  w  w.ja va  2s  .co  m*/
 * #%L
 * **********************************************************************
 * ORGANIZATION  :  Pi4J
 * PROJECT       :  Pi4J :: Java Library (Core)
 * FILENAME      :  ExecUtil.java  
 * 
 * This file is part of the Pi4J project. More information about 
 * this project can be found here:  http://www.pi4j.com/
 * **********************************************************************
 * %%
 * Copyright (C) 2012 - 2015 Pi4J
 * %%
 * This program 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 3 of the
 * License, or (at your option) 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 Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
 * #L%
 */

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

public class Main {
    public static String[] execute(String command) throws IOException, InterruptedException {
        return execute(command, null);
    }

    public static String[] execute(String command, String split) throws IOException, InterruptedException {
        List<String> result = new ArrayList<>();
        Process p = Runtime.getRuntime().exec(command);
        p.waitFor();

        if (p.exitValue() != 0)
            return null;

        InputStreamReader isr = new InputStreamReader(p.getInputStream());
        BufferedReader reader = new BufferedReader(isr);
        String line = reader.readLine();
        while (line != null) {
            if (!line.isEmpty()) {
                if (split == null || split.isEmpty()) {
                    result.add(line.trim());
                } else {
                    String[] parts = line.trim().split(split);
                    for (String part : parts) {
                        if (part != null && !part.isEmpty()) {
                            result.add(part.trim());
                        }
                    }
                }
            }
            line = reader.readLine();
        }

        // close readers and stream
        reader.close();
        isr.close();
        p.getInputStream().close();

        if (result.size() > 0) {
            return result.toArray(new String[result.size()]);
        } else {
            return new String[0];
        }
    }
}

Related

1. execute(final String applicationName, final String workingDirectory)
2. execute(final String command)
3. execute(ProcessBuilder builder, String errorMsg)
4. execute(String cmd, String input)
5. execute(String command)
6. execute(String command)
7. execute(String command, Process p, String[] output, boolean cmdStatus)
8. execute(String url)
9. execute(String... cmdarray)