The whole code is:
public class ThreadLocalTest {
ThreadLocal<Integer> globalint = new ThreadLocal<Integer>(){
@Override
protected Integer initialValue() {
return new Integer(0);
}
};
public class MyThread implements Runnable{
Integer myi;
ThreadLocalTest mytest;
public MyThread(Integer i, ThreadLocalTest test) {
myi = i;
mytest = test;
}
@Override
public void run() {
System.out.println("I am thread:" + myi);
Integer myint = mytest.globalint.get();
System.out.println(myint);
mytest.globalint.set(myi);
}
}
public static void main(String[] args){
ThreadLocalTest test = new ThreadLocalTest();
new Thread(new MyThread(new Integer(1), test)).start();
}
}
why the following snippet:
ThreadLocalTest test=new ThreadLocalTest();
new Thread(new MyThread(new Integer(1),test)).start();
cause the following error:
No enclosing instance of type ThreadLocalTest is accessible. Must qualify the allocation with an enclosing instance of type ThreadLocalTest (e.g. x.new A() where x is an instance of ThreadLocalTest).
The core problem is that: i want to initialize the inner class in the static methods. here are two solutions:
- make the inner class as outer class
- use outer reference like :
new Thread(test.new MyRunnable(test)).start();//Use test object to create new