execute Cmd - Java Native OS

Java examples for Native OS:Shell Command

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Description

execute Cmd

Demo Code


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

public class Main{
    public static void main(String[] argv) throws Exception{
        String cmd = "java2s.com";
        System.out.println(executeCmd(cmd));
    }/*from   w w  w.jav a  2  s .c om*/
    
    public static String executeCmd(String cmd[]) {
        try {
            StringBuffer sb = new StringBuffer();
            for (int i = 0; i < cmd.length; i++) {
                Process pro = null;
                pro = Runtime.getRuntime().exec(cmd[i]);
                // ProcessBuilder pb = new ProcessBuilder(cmd[i]);
                // pb.redirectErrorStream(true);
                // pro = pb.start();
                BufferedReader br = null;
                InputStreamReader isr = new InputStreamReader(
                        pro.getInputStream(), "utf-8");
                br = new BufferedReader(isr);
                String line = br.readLine();
                while (line != null) {
                    sb.append(line + "\r\n");
                    line = br.readLine();
                }
                // System.out.println(sb.toString());

                try {
                    pro.waitFor();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                } finally {
                    try {
                        if (br != null) {
                            br.close();
                            br = null;
                        }
                        if (isr != null) {
                            isr.close();
                            isr = null;
                        }
                        if (pro != null) {
                            pro.destroy();
                            pro = null;
                        }
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
            return sb.toString();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
}

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