測試代碼

public class T25 {

public static void main(String[] args) {

//主線程中賦值
ThreadLocal<String> stringThreadLocal = new ThreadLocal<>();

InheritableThreadLocal<String> stringInheritableThreadLocal = new
 
 InheritableThreadLocal<>();

stringThreadLocal.set("ThreadLocal string");
stringInheritableThreadLocal.set("InheritableThreadLocal string");

//子線程中分別打印兩個變量的信息
new Thread(() -> {
System.out.println(
Thread.currentThread().getName() + " ThreadLocal value ：" + stringThreadLocal.get());
System.out.println(Thread.currentThread().getName() 
 
+ " InheritableThreadLocal value ："
+ stringInheritableThreadLocal.get());
}).start();

}
}

原理分析

InheritableThreadLocal類解析

總結

InheritableThreadLocal類原理簡介使用 父子線程傳遞數據詳解 多線程中篇（十八）