Runtime : exec(String command)

package Runtime;

public class exec {
    public static void main(String args[]){
        Runtime r=Runtime.getRuntime();
        Process p=null;
       
        String cmd[]={"leafpad","/Runtime.java"};
       
        try {
            p=r.exec(cmd);
        } catch (Exception e) {
                System.out.println("error executing "+ cmd[0]);
        }
    }
}