java - 这段代码中线程的执行顺序？

package thread.name;

import java.text.SimpleDateFormat;
import java.util.Date;

public class GetThreadName implements Runnable {
//private int i=10;
private boolean flag = true;
@Override
public void run() {
    while(flag){
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println(Thread.currentThread().getName());
        System.out.println("================");
    }
}

public void stop(){
    this.flag = false;
}
}

public class ThreadMain {

    /**
     * @param args
     * @throws InterruptedException 
     */
    public static void main(String[] args) throws InterruptedException {
        // TODO Auto-generated method stub
        GetThreadName test = new GetThreadName();
        Thread proxy1 = new Thread(test,"test1");
        proxy1.start();
        System.out.println(Thread.currentThread().getName()+"-proxy1-");
        System.out.println("====================");
        System.out.println(Thread.currentThread().getName()+"-main-");
        System.out.println("====================");
        test.stop();
        System.out.println(Thread.currentThread().getName());
    }

}

为什么输出是

main-proxy1-
====================
main-main-
====================
main
test1
================

这段代码中线程的执行顺序是？ 为什么最后一个main出现在test1 上面？