Java多线程之死锁详解

@Slf4j
public class ThreadTest {
    private static Object objectA = new Object();
    private static Object objectB = new Object();
    public static void main(String[] args) throws InterruptedException {
        Thread t2 = new Thread(()->{
            synchronized (objectA){
                log.debug("线程t2获取到了objectA");
                synchronized (objectB){
                    log.debug("线程t2获取到了objectB");
                }
            }
        },"t2");
        Thread t1 = new Thread(()->{
            synchronized (objectB){
                log.debug("线程t1获取到了objectB");
                synchronized (objectA){
                    log.debug("线程t1获取到了objectA");
                }
            }
        },"t1");
        t2.start();
        t1.start();
    }
}

@Slf4j
public class Thread1 {
    public static void main(String[] args) throws InterruptedException {
        //筷子对象
        Chopsticks c1 = new Chopsticks("c1");
        Chopsticks c2 = new Chopsticks("c2");
        Chopsticks c3 = new Chopsticks("c3");
        Chopsticks c4 = new Chopsticks("c4");
        new Philosopher("李云龙",c1,c2).start();
        new Philosopher("赵刚",c2,c3).start();
        new Philosopher("魏和尚",c3,c4).start();
        new Philosopher("张大彪",c4,c1).start();
    }
}
//筷子
class  Chopsticks{
    private String name;
 
    public Chopsticks(String name) {
        this.name = name;
    }
}
//哲学家
@Slf4j
class Philosopher extends Thread{
    //名字
    private String name;
    //筷子
    private Chopsticks left;
    private Chopsticks right;
 
    public Philosopher(String name, Chopsticks left, Chopsticks right) {
        super(name);
        this.left = left;
        this.right = right;
    }
 
    @Override
    public void run() {
        while(true){
            synchronized (right){
                synchronized (left){
                    eat(name);
                }
            }
        }
    }
    private void eat(String name){
        log.debug(name + "正在吃饭");
    }
}