publicclassThreadLocalSimpleDemo{publicstaticvoidmain(String[] args){intthreads=3;InnerClassinnerClass=newInnerClass();for(inti=1; i <= threads; i++) {newThread(() -> {for(intj=0; j <4; j++) { innerClass.add(String.valueOf(j)); innerClass.print(); } innerClass.set("hello world...
Local classes are similar to inner classes because they cannot define or declare any static members. Local classes in static methods, such as the classPhoneNumber, which is defined in the static methodvalidatePhoneNumber, can only refer to static members of the enclosing class. For example, if...
public class ThreadLocalDemo { public static void main(String[] args) throws InterruptedException { int threads = 3; CountDownLatch countDownLatch = new CountDownLatch(threads); InnerClass innerClass = new InnerClass(); for(int i = 1; i <= threads; i++) { new Thread(() -> { for(...
This class provides thread-local variables. These variables differ from their normal counterparts in that each thread that accesses one (via its get or set method) has its own, independently initialized copy of the variable. ThreadLocal instances are typically private static fields in classes that ...
* anonymous inner class will be used. * * @return the initial value for this thread-local */protectedTinitialValue(){returnnull;} initialValue方法是该类作者提供给使用者供其产生局部变量的方法。 get() 代码语言:javascript 代码运行次数:0
private static class InnerClass { public void add(String newStr) { StringBuilder str = Counter.counter.get(); Counter.counter.set(str.append(newStr)); } public void print() { System.out.printf("Thread name:%s , ThreadLocal hashcode:%s, Instance hashcode:%s, Value:%s\n", ...
innerClass.set("hello world"); countDownLatch.countDown(); }, "thread - " + i).start(); } countDownLatch.await(); } private static class InnerClass { public void add(String newStr) { StringBuilder str = Counter.counter.get(); ...
This class provides thread-local variables. These variables differ from their normal counterparts in that each thread that accesses one (via itsgetorsetmethod) has its own, independently initialized copy of the variable.ThreadLocalinstances are typically private static fields in classes that wish to ...
变量inner 处在代码块中,其生命周期仅在该代码块内部有效,因此该变量也可以叫做一个代码块局部变量(Code Block Local Variable)。 ThreadLocal 简介 现在回到ThreadLocal中来,Java 文档说ThreadLocal类是为提供thread-local的变量而设计的,因此我们可以联想到该变量的生命周期应该是在一个线程开始时到一个线程结束时。
This class provides thread-local variables. These variables differ from their normal counterparts in that each thread that accesses one (via its get or set method) has its own, independently initialized copy of the variable. ThreadLocal instances are typically private static fields in classes that ...