JAVA线程的使用_代码举例

电玩女神 2022-05-26 06:46 29阅读 0赞

# JAVA线程的使用 #

### Eg:三个售票站同时卖20张票 ###

class TicketRunnable implements Runnable{
        private int number=0; //
        String name1,name2,name3;
        public TicketRunnable(String s1,String s2,String s3){
            name1=s1;
            name2=s2;
            name3=s3;
        }
      void setNumber(int n){
          number=n;
      }
        public void run() {
            while(true){
                number=number-1;
                if(Thread.currentThread().getName().equals(name1)){
                    if(number<0){
                        System.out.println("1号卖wan");
                        return;
                    }
                    else
                    System.out.println(name1+"剩下"+(100-number)+"卖了"+number);
                }
                else if(Thread.currentThread().getName().equals(name2)){
                    if(number<0){
                        System.out.println("2号卖wan");
                        return;
                    }
                    else
                    System.out.println(name2+"剩下"+(100-number)+"卖了"+number);
                }
                else if(Thread.currentThread().getName().equals(name3)){
                    if(number<0){
                        System.out.println("3号卖wan");
                        return;
                    }
                    else
                    System.out.println(name3+"剩下"+(100-number)+"卖了"+number);
                }
                try{
                    Thread.sleep(500);
                }catch(InterruptedException e){
    
                }
            }
    
        }
        }
    public class xiancheng {
    
        public static void main(String[] args) {
            TicketRunnable tr=new TicketRunnable("1","2","3");
            Thread hazhan=new Thread(tr);
            Thread haxi=new Thread(tr);
            Thread hadong=new Thread(tr);
            hazhan.setName("1");
            haxi.setName("2");
            hadong.setName("3");
            tr.setNumber(100);
            hazhan.start();
            haxi.start();
            hadong.start();
        }
    
    }

简便方法

import java.util.*;
    
    class Station implements Runnable{ 
        int ticket=0;//SellTicket所用到的参数,三个票站公用一个ticket,用number-ticket表示剩余票数
        String s1,s2,s3;
        boolean t=true;
        public Station(String s1,String s2,String s3)
        {
            this.s1=s1;
            this.s2=s2;
            this.s3=s3;
        }
        @Override
        public void run() {
            // TODO Auto-generated method stub
            while(t)
            {  t=SellTicket(20);    }
        }
        public synchronized boolean SellTicket(int number)
        {
                ticket++;
                if(ticket>number)
                    { t=false;  }
                else{
                System.out.println(Thread.currentThread().getName()+"卖出第"+ticket+"张票"+"还剩"+(number-ticket)+"张票");
                try {
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
            return t;
        }   
    }
    
    public class xiancheng{ 
        public static void main(String[] args) {
            // TODO Auto-generated method stub
            String s1="一号窗口",s2="二号窗口",s3="三号窗口";
            Station s=new Station(s1,s2,s3);
            Thread m=new Thread(s);
            Thread n=new Thread(s);
            Thread q=new Thread(s);
            m.setName(s1);
            n.setName(s2);
            q.setName(s3);
            m.start();
            n.start();
            q.start();
        }
    }