NetBeans--Java线程学习

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 */
package pkg20221204stackthreaddemo;

import java.util.Stack;

/**
 *
 * @author mikha
 */
public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        Stack<Integer> stack=new Stack<>();
//        stack.setSize(3);
        //两个线程一个读一个写
        WriteThread writeThread=new WriteThread(stack);
        writeThread.setName("写线程");
        ReadThread readThread=new ReadThread(stack);
        readThread.setName("读线程");
        writeThread.start();
        readThread.start();
        
    }
    
}

/*
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 */
package pkg20221204stackthreaddemo;

import java.util.Stack;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author mikha
 */
public class ReadThread extends Thread{
    private Stack<Integer> stack;
    private int count;

    public ReadThread(Stack<Integer> stack) {
        this.stack = stack;
        count = 1;
    }

    @Override
    public void run() {
        System.out.println("写线程在运行");
        while(count<=100)
        {
            synchronized(stack)
            {
                if(stack.empty())
                {
                    try {
                        stack.wait();
                    } catch (InterruptedException ex) {
                        Logger.getLogger(ReadThread.class.getName()).log(Level.SEVERE, null, ex);
                    }
                }
                else//栈不空
                {
                    int data=stack.pop();
                    System.out.println(Thread.currentThread().getName()+"读出："+data);//输出读出的是几
                    count++;
                    stack.notify();
                }
            }
        }
    }
    
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package pkg20221204stackthreaddemo;

import java.util.Stack;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author mikha
 */
public class WriteThread extends Thread{
    private Stack<Integer>stack;
    private int count;//线程中的个数

    public WriteThread(Stack<Integer> stack) {
        this.stack = stack;
        count=1;
    }

    @Override
    public void run() {
        System.out.println("写线程正在运行");
        while(count<=100)
        {
            synchronized(stack)//Syncronized 的目的是一次只允许一个线程进入由他修饰的代码段，从而允许他们进行自我保护
            {
                if(stack.size()==3)//栈满
                {
                    try {
                        stack.wait();//等待
                    } catch (InterruptedException ex) {
                        Logger.getLogger(WriteThread.class.getName()).log(Level.SEVERE, null, ex);
                    }
                }
                else
                {
                    stack.push(count);
                    System.out.println(Thread.currentThread().getName()+"写入："+count);//输出写入的是几
                    count++;
                    stack.notify();//Object notify() 方法用于唤醒一个在此对象监视器上等待的线程。
                    
                }
            }
        }
    }
    
}