/**
　　* created by intellij idea.
　　 * autor:cofbean
　　 * date: 2004-3-10
 　　* time: 13:41:48
　　 * qq:21439991
　　 */

　　import java.io.ioexception;

　　public class ctrwds {

　　    private static ctrwds ourinstance = null;

　　    private ctrwds() {
　　    }

 　　   public static ctrwds getinstance() {
 　　       if (ourinstance == null) {
 　　           ourinstance = new ctrwds();
  　　      }
 　　       return ourinstance;
  　　  }

    public void exec(string cmd) {
        try {
            runtime.getruntime().exec(cmd);
        }
        catch (ioexception e) {
            system.out.println("执行失败");       
        }
    }

    public void restart() {
        exec("shutdown -r ");
    }

    public void logout() {
        exec("shutdown -l ");
    }

    public static void main(string[] str) {
        if (str.length == 0) {
            system.out.println("-----------------------/n" +
                    "关机  -s/n" +
                    "重起  -r/n" +
                    "注销  -l/n" +
                    "-----------------------/n");
        }
        else{
           try{
               thread.currentthread().sleep(10000l);
            }
            catch(exception e){
               ctrwds.getinstance().exec(str[0]);
            }
         }

    　}

　}