同步代码块，同步方法，Lock接口
Object ojb=new Object();
同步代码块:
public void run(){ while(true){ synchronized (obj) { if(ticket>0){ try { Thread.sleep(500); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println(Thread.currentThread().getName() +"窗口卖了第"+ticket--+"张票"); } } } }
synchronized(obj){aaaaa}
同步方法:
aaa();
public synchronized void aaa(){aaaaaa}
public void run(){ while(true){ sale(); } } //同步方法 public synchronized void sale(){ //可能发生安全问题的代码放进来 if(ticket>0){ try { Thread.sleep(500); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println(Thread.currentThread().getName() +"窗口卖了第"+ticket--+"张票"); } }
Lock接口方法：
private Lock lk=new ReentrantLock() //创建Lock对象
lk.lock();
aaaaaa;
lk.unlock();
private Lock lk=new ReentrantLock(); //重写run public void run(){ while(true){ //获取锁 lk.lock(); if(ticket>0){ try { Thread.sleep(500); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println(Thread.currentThread().getName() +"窗口卖了第"+ticket--+"张票"); } //释放锁 lk.unlock(); } }
原文：https://www.cnblogs.com/god3064371/p/11738866.html