单例模式场景模拟和问题解决
饿汉式单例 private static Student student new Student();不存在线程安全问题 懒汉式单例 线程安全问题 package org.example.Singleton;import java.util.concurrent.CountDownLatch; import java.util.concurrent.ExecutorService; import java.util.concurrent.Execu…
2025-06-16