java 字符串锁

package com.example.demo.controller;
 
public class StringLock {
 
    public void method(String p) {
        // new String("字符串常量")
        synchronized (p.intern()) {
            try {
 
                    System.out.println("当前线程 : " + Thread.currentThread().getName() + "开始");
                    Thread.sleep();
                    System.out.println("当前线程 : " + Thread.currentThread().getName() + "结束");
 
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
 
    public static void main(String[] args) {
 
        Thread t1 = new Thread(new Runnable() {
            @Override
            public void run() {
                StringLock stringLock = new StringLock();
                stringLock.method("");
            }
        }, "t1");
        Thread t2 = new Thread(new Runnable() {
            @Override
            public void run() {
                StringLock stringLock1 = new StringLock();
                stringLock1.method("");
            }
        }, "t2");
 
        t1.start();
        t2.start();
    }
 
}