1.ThreadLocal原理

线程1

ThreadLocalA实例

堆内存

ThreadLocalA对象引用

弱引用

ThreadLocalMap1

Entry数组

ThreadLocal内存模型

ThreadLocalMap2

Thread1实例

线程2

Thread1对象引用

Thread2实例

public class ThreadLocalDemo{   private ThreadLocal<String> localA = new ThreadLocal<>();      private static ThreadLocal<String> localB = new ThreadLocal<>();}

ThreadLocalB实例静态变量

ThreadLocalB(static)

Thread2对象引用