死锁写法

public class Deadlock {
    public static void main(String[] args) {
        String a = "lockA";
        String b = "lockB";
        new Thread(new Mythread(a,b),"t1").start();
        new Thread(new Mythread(b,a),"t2").start();
    }
}
class  Mythread implements Runnable{
    private String a;
    private String b;
    public Mythread(String a, String b){
        this.a = a;
        this.b = b;
    }
    @Override
    public void run() {
        this.a = a;
        this.b = b;
        synchronized (a){
            System.out.println("have "+a+ " lock"+" get "+ b+ " lock");
            synchronized (b){
            }
        }
    }
}