Java中的ThreadLocal和 InheritableThreadLocal
代码语言：javascript复制package com.example.core.mydemo.java;
/**
* output
* Thread-0 ThreadLocal value ：null
* Thread-0 InheritableThreadLocal value ：InheritableThreadLocal string
*/
public class ThreadLocalTest {
public static void main(String[] args) {
//主线程中赋值
ThreadLocal<String> stringThreadLocal = new ThreadLocal<>();
InheritableThreadLocal<String> stringInheritableThreadLocal = new InheritableThreadLocal<>();
stringThreadLocal.set("ThreadLocal string");
stringInheritableThreadLocal.set("InheritableThreadLocal string");
//子线程中分别打印两个变量的信息
new Thread(() -> {
System.out.println(
Thread.currentThread().getName() " ThreadLocal value ：" stringThreadLocal.get());
System.out.println(Thread.currentThread().getName() " InheritableThreadLocal value ："
stringInheritableThreadLocal.get());
}).start();
}
}在上面的测试代码中，主线程中创建了两个变量，类型分别为：ThreadLocal和InheritableThreadLocal 然后在主线程中创建了一个新的线程 在新的线程中，尝试获取他们的值 从打印信息可以看得出来 对于ThreadLocal获取的值为null，而对于InheritableThreadLocal则能够获取到值
