Java回调方法的执行线程

最近在做Android的过程中，在UI线程中启动子线程，并通过传参方式执行回调方法，不清楚回调方法的执行线程是谁。猜想是子线程执行回调方法，但是发现GPS服务的onLocationChanged方法执行进程是UI线程（估计是GPS的service是绑定在UI线程上执行造成的），所以特意做了下测试。直接上代码：

public class Test {

	public static void main(String[] args) {
		System.out.println("111111111");
		Thread c = Thread.currentThread();
		System.out.println(c.getName() + "=" + c.getId() + "=" + c.hashCode());
		System.out.println("111111111");

		final Thread thread = new Thread(new Networker(new CallBackListener() {

			@Override
			public void onCall() {
				// TODO Auto-generated method stub
				System.out.println("3333333");
				Thread c = Thread.currentThread();
				System.out.println(c.getName() + "=" + c.getId() + "="
						+ c.hashCode());
				System.out.println("3333333");
			}
		}));

		Thread thread2 = new Thread() {

			@Override
			public void run() {
				// TODO Auto-generated method stub
				super.run();
				System.out.println("55555");
				Thread c = Thread.currentThread();
				System.out.println(c.getName() + "=" + c.getId() + "="
						+ c.hashCode());
				System.out.println("55555");

				System.out.println("2222");
				thread.start();
				System.out.println("2222");
			}

		};

		System.out.println("000000");
		thread2.start();
		System.out.println("000000");
	}

}

class Networker implements Runnable {

	CallBackListener listener;

	public Networker(CallBackListener listener) {
		super();
		this.listener = listener;
	}

	@Override
	public void run() {
		// TODO Auto-generated method stub
		System.out.println("4444");
		Thread c = Thread.currentThread();
		System.out.println(c.getName() + "=" + c.getId() + "=" + c.hashCode());
		System.out.println("4444");

		System.out.println("xxxxxxxxxx");
		listener.onCall();
		System.out.println("xxxxxxxxxx");
	}

}

public interface CallBackListener {
	public void onCall();
}

再看看执行结果：





证明回调方法是在调用该方法的线程中执行的。