java run cmd

1javac MyFisrtProgam.java // enter to compile 
2  java MyfirstProgram // run program 
3

1public void excCommand(String new_dir){
2    Runtime rt = Runtime.getRuntime();
3    try {
4        rt.exec(new String[]{"cmd.exe","/c","start"});
5
6    } catch (IOException e) {
7        // TODO Auto-generated catch block
8        e.printStackTrace();
9    }
10}
11

1
2C:\Users\Your Name>javac MyClass.java
3