【Java基础】多线程中同步的两种解决方案

1、同步代码

import java.util.logging.Level;
import java.util.logging.Logger;
public class MyThread implements Runnable {//实现Ruannable借口

private int tickets = 10;      //一共10张票
@Override
public void run() {     //实现run()方法
for (int i = 0; i < 50; i++) {
synchronized (this) {
if (tickets > 0) {
try {
Thread.sleep(200);
} catch (InterruptedException ex) {
Logger.getLogger(MyThread.class.getName()).log(Level.SEVERE, null, ex);
}
System.out.println(Thread.currentThread().getName() + ":ticket" + tickets--);
}
}
}
}
}

import java.util.logging.Level;
import java.util.logging.Logger;
public class TicketThread extends Thread {
private int tickets = 10;      //一共10张票
@Override
public void run() {     //实现run()方法
for (int i = 0; i < 50; i++) {
this.sale();
}
}
public synchronized void sale() {
if (tickets > 0) {
try {
Thread.sleep(200);
} catch (InterruptedException ex) {
Logger.getLogger(MyThread.class.getName()).log(Level.SEVERE, null, ex);
}
System.out.println(Thread.currentThread().getName() + ":ticket" + tickets--);
}
}
}