单列体现（Runtime）

package test;


import java.util.*;
import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.locks.Lock;

import javax.print.attribute.IntegerSyntax;

import org.omg.CosNaming.NamingContextExtPackage.AddressHelper;

import privateclass.*;
import java.io.*;

public class Main {

	private static final String space_operator = " ";
	public static void main(String[] args) throws Exception {

		/*
		 *Runtime是一个单列
		 *可以直接开启一个程序
		 *并且我们可以让线程停一下观察杀死程序的过程
		 */
		Scanner scanner = new Scanner(new BufferedInputStream(System.in));
		//PrintWriter out = new PrintWriter(new OutputStreamWriter(System.out));
		
		Runtime e = Runtime.getRuntime();
		
		
		Process p = e.exec("notepad.exe");
		Thread.sleep(5000);
		
		p.destroy();
		
		
	}
	
}