Java Shell Command runCommand(String[] args)

Description

run Command

License

Open Source License

Declaration

public static int runCommand(String[] args) throws IOException 

Method Source Code

//package com.java2s;
/*//ww  w. j a  v  a  2s . c  o m
Weave (Web-based Analysis and Visualization Environment)
Copyright (C) 2008-2011 University of Massachusetts Lowell
    
This file is a part of Weave.
    
Weave is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License, Version 3,
as published by the Free Software Foundation.
    
Weave 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 Weave.  If not, see <http://www.gnu.org/licenses/>.
*/

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

public class Main {
    public static int runCommand(String[] args) throws IOException {
        Runtime run = Runtime.getRuntime();
        Process proc = null;
        proc = run.exec(args);
        BufferedReader stdout = new BufferedReader(new InputStreamReader(proc.getInputStream()));
        BufferedReader stderr = new BufferedReader(new InputStreamReader(proc.getErrorStream()));
        while (true) {
            //String line = null;
            try {
                // check both streams for new data
                if (stdout.ready()) {
                    stdout.skip(Long.MAX_VALUE);
                    //line = stdout.readLine();
                } else if (stderr.ready()) {
                    stderr.skip(Long.MAX_VALUE);
                    //line = stderr.readLine();
                }
                //                // print out data from stream
                //                if (line != null)
                //                {
                //                    //System.out.println(line);
                //                    continue;
                //                }
            } catch (IOException ioe) {
                // stream error, get the return value of the process and return from this function
                try {
                    return proc.exitValue();
                } catch (IllegalThreadStateException itse) {
                    return -Integer.MAX_VALUE;
                }
            }
            try {
                // if process finished, return
                return proc.exitValue();
            } catch (IllegalThreadStateException itse) {
                // process is still running, continue
            }
        }
    }
}

Related

1. runCommand(String command, String args, String file)
2. runCommand(String command[])
3. runCommand(String program, ArrayList args)
4. runCommand(String s)
5. runCommand(String[] args)
6. runCommand(String[] cmdArray, String extraPath, String libPath)
7. runCommand(String[] command)
8. runCommand(String[] command)
9. runCommandAndWait(String command, String workingDir, String extraPath)