Java基础-多线程实现顺序执行

1.效果图：

2.代码：

//可以继承Thread重写run函数public class MultipleThreadStudy extends Thread {    /*	MultipleThreadStudy(){}	MultipleThreadStudy(String name){		super(name);	}*/	//重写Thread的run函数	public void run(){		for(int i=0;i<10;i++)		{			System.out.PRint("MultipleThreadStudy:i="+i);						try			{				Thread.sleep((int)Math.random()*1000);			}			catch(Exception e)			{				e.printStackTrace();			}			System.out.println("");		}	}		//******************************************多线程*********************************************************	//不论是用继承的Thread方法还是用Runnable接口实现的方法，java里面的多个线程同时运行时，不是顺序执行，而是并行执行	//如果需要顺序执行，则需加判断前一个线程是否执行完毕	//如果要顺序执行，方法一：判断线程isAlive是否在运行中，不停循环直至结束	//方法二：调用join方法	//快捷键注释代码：Ctrl+Shift+/     (/*  */  形式的) 或   Ctrl+/   (//  形式的)	//快捷键取消注释：Ctrl+Shift+/     (/*  */  形式的) 或   Ctrl+/   (//  形式的)	public static void main(String[] args) {		//************继承Thread重写run函数的线程***************		MultipleThreadStudy thread1=new MultipleThreadStudy();		MultipleThreadStudy thread2=new MultipleThreadStudy();		MultipleThreadStudy thread3=new MultipleThreadStudy();		//thread1.setPriority(1);  //设置优先级		//thread2.setPriority(2);		//thread3.setPriority(3);		System.out.println("............thread1 run...............");		thread1.start();		//方法一：判断线程isAlive是否在运行中，不停循环直至结束		while(thread1.isAlive())		{			try			{				Thread.sleep(100);			}			catch(Exception e)			{				e.printStackTrace();			}		}		System.out.println("............thread2 run...............");		thread2.start();		while(thread2.isAlive())		{			try			{				Thread.sleep(100);			}			catch(Exception e)			{				e.printStackTrace();			}		}		System.out.println("............thread3 run...............");		thread3.start();		while(thread3.isAlive())		{			try			{				Thread.sleep(100);			}			catch(Exception e)			{				e.printStackTrace();			}		}				//************实现Runnable的接口方法run函数*************		Runnable rb1=new RunnableThread();		Runnable rb2=new RunnableThread();		Runnable rb3=new RunnableThread();		Thread runnableThread1=new Thread(rb1);//鼠标移到Thread，按alt+/的方式看需传的参数		Thread runnableThread2=new Thread(rb2);		Thread runnableThread3=new Thread(rb3);		System.out.println("...runnableThread1 run...");		runnableThread1.start();		//方法二：调用join方法	    try	    {			runnableThread1.join();		}		catch(Exception e)		{			e.printStackTrace();		}	    System.out.println("...runnableThread2 run...");		runnableThread2.start();		try		{			runnableThread2.join();		}		catch(Exception e)		{			e.printStackTrace();		}		System.out.println("...runnableThread3 run...");		runnableThread3.start();	}}//可以实现Runnable的接口方法run函数class RunnableThread implements Runnable{	public void run(){		for(int i=0;i<10;i++)		{			System.out.print("RunnableThread:i="+i);						try			{				Thread.sleep((int)Math.random()*1000);			}			catch(Exception e)			{				e.printStackTrace();			}			System.out.println("");		}	}}