Example usage for java.lang Runtime getRuntime

Introduction

In this page you can find the example usage for java.lang Runtime getRuntime.

Prototype

public static Runtime getRuntime()

Source Link

Document

Returns the runtime object associated with the current Java application.

Usage

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Object f = new Object() {
        public void finalize() {
            System.out.println("Running finalize()");
        }//from w  w w.ja  v a 2  s .co m
    };
    Runtime.getRuntime().addShutdownHook(new Thread() {
        public void run() {
            System.out.println("Running Shutdown Hook");
        }
    });

    f = null;
    System.gc();

    System.out.println("Calling System.exit()");
    System.exit(0);
}

From source file:ExecShellArgs.java

public static void main(String[] args) throws IOException {
    Runtime r = Runtime.getRuntime();
    String[] nargs = { "sh", "-c", "for i in 1 2 3; do echo $i; done" };
    Process p = r.exec(nargs);/*from   www  .ja va2  s .c  o  m*/
    BufferedReader is = new BufferedReader(new InputStreamReader(p.getInputStream()));
    String line;
    while ((line = is.readLine()) != null)
        System.out.println(line);
}

From source file:Message.java

public static void main(String[] args) {
    try {//from ww  w  .  j  a  va2s  .c  o m
        // register Message as shutdown hook
        Runtime runTime = Runtime.getRuntime();
        runTime.addShutdownHook(new Message());

    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:ExecDemoRm.java

public static void main(String[] args) throws IOException {
    for (int i = 0; i < 10; i++) {
        new File("/tmp/ww" + i).createNewFile();
    }//from   w  ww . ja  va2 s .  co  m
    Runtime.getRuntime().exec("ls -l /tmp/ww? > /tmp/report");
    Runtime.getRuntime().exec("rm -f /tmp/ww?");
}

From source file:Run2.java

public static void main(String[] args) throws java.io.IOException {
    if (args.length != 1) {
        System.err.println("usage: java Run pathname");
        return;//from   ww w. j a  v a2 s  .  c o  m
    }

    Process p = Runtime.getRuntime().exec(args[0]);

    InputStream is = p.getInputStream();
    int b;
    while ((b = is.read()) != -1)
        System.out.print((char) b);

    try {
        System.out.println("Exit status = " + p.waitFor());
    } catch (InterruptedException e) {
    }
}

From source file:Main.java

public static void main(String args[]) throws IOException {

    Runtime runtime = Runtime.getRuntime();
    Process process = runtime.exec(args);
    InputStream is = process.getInputStream();
    InputStreamReader isr = new InputStreamReader(is);
    BufferedReader br = new BufferedReader(isr);
    String line;/*from   w ww .j  ava 2 s .  c o m*/

    System.out.printf("Output of running %s is:", Arrays.toString(args));

    while ((line = br.readLine()) != null) {
        System.out.println(line);
    }

}

From source file:Main.java

public static void main(String[] args) throws InterruptedException {
    Main task = new Main();
    int threads = Runtime.getRuntime().availableProcessors();
    ExecutorService pool = Executors.newFixedThreadPool(threads);
    for (int i = 0; i < threads; i++) {
        pool.submit(task);/*from   w w  w . j a v a 2s. c  om*/
    }
    pool.awaitTermination(120, TimeUnit.SECONDS);
}

From source file:Main.java

public static void main(String[] args) {
    try {/*from w w w.j  av a 2s.  com*/

        String[] envArray = new String[2];
        envArray[0] = "";
        envArray[1] = "";
        // create a process and execute notepad.exe and currect environment
        Runtime runTime = Runtime.getRuntime();

        Process process = runTime.exec("notepad.exe", envArray);

    } catch (Exception ex) {
        ex.printStackTrace();
    }

}

From source file:Main.java

public static void main(String[] args) {
    InputStream fileInputStream;//from w  ww  . j a  va 2  s . co m
    try {
        fileInputStream = new FileInputStream("c:/a.txy");
        Runtime runTime = Runtime.getRuntime();
        runTime.getLocalizedInputStream(fileInputStream);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }

}

From source file:Message.java

public static void main(String[] args) {
    try {//from  w w w .ja  v a2  s.  c o m
        Message p = new Message();
        // register Message as shutdown hook
        Runtime runTime = Runtime.getRuntime();
        runTime.addShutdownHook(p);

        // remove the hook
        runTime.removeShutdownHook(p);

        System.out.println("Program is closing...");

    } catch (Exception e) {
        e.printStackTrace();
    }
}