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:Main.java

public static void main(String[] argv) throws Exception {
    String command = "cat";
    Process child = Runtime.getRuntime().exec(command);

    OutputStream out = child.getOutputStream();

    out.write("some text".getBytes());
    out.close();//w  ww.  ja v  a  2 s .c  o m
}

From source file:Main.java

public static void main(String[] args) {
    try {//from w ww.j a v a  2 s  .  c  om
        // create a process and execute notepad.exe
        Runtime runTime = Runtime.getRuntime();
        Process process = runTime.exec("notepad.exe");

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

}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    String command = "ls";
    Process child = Runtime.getRuntime().exec(command);

    InputStream in = child.getInputStream();
    int c;//from   w ww . j  a va 2  s .c  o m
    while ((c = in.read()) != -1) {
        System.out.println(((char) c));
    }
    in.close();
}

From source file:Main.java

public static void main(String[] args) {
    DecimalFormat df = new DecimalFormat("0.00");

    long freeMem = Runtime.getRuntime().freeMemory();
    System.out.println(df.format(freeMem / 1000000F) + " MB");
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    String command = "ls";
    Process child = Runtime.getRuntime().exec(command);

    InputStream in = child.getInputStream();
    int c;/*ww w .j  ava 2 s  . c om*/
    while ((c = in.read()) != -1) {
        System.out.println((char) c);
    }
    in.close();
}

From source file:Main.java

public static void main(String[] args) {
    DecimalFormat df = new DecimalFormat("0.00");

    long maxMem = Runtime.getRuntime().maxMemory();
    System.out.println(df.format(maxMem / 1000000F) + " MB");

}

From source file:Main.java

public static void main(String[] args) {
    DecimalFormat df = new DecimalFormat("0.00");

    long totalMem = Runtime.getRuntime().totalMemory();

    System.out.println(df.format(totalMem / 1000000F) + " MB");

}

From source file:Main.java

public static void main(String[] arg) {
    Runtime runTime = Runtime.getRuntime();
    Main hook = new Main();
    runTime.addShutdownHook(new Thread(hook));
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Process process = Runtime.getRuntime().exec("ls -al");
    process.waitFor();/*from   w  w  w  .  j av  a 2  s .co  m*/

    int exitValue = process.exitValue();
    System.out.println("exitValue = " + exitValue);
    BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
    String line = "";
    while ((line = reader.readLine()) != null) {
        System.out.println(line);
    }
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    // Execute a command without arguments
    String command = "ls";
    Process child = Runtime.getRuntime().exec(command);

    // Execute a command with an argument
    command = "ls /tmp";
    child = Runtime.getRuntime().exec(command);
}