Thread t = Thread.currentThread();是什么意思？？_Java相关

Thread t = Thread.currentThread();是什么意思？？

public class TwoThread extends Thread {
    private Thread creatorThread;

    public TwoThread() {
        // make a note of the thread that constructed me!
        creatorThread =Thread.currentThread();
    }

    public void run() {
        for ( int i = 0; i < 10; i++ ) {
            printMsg();
        }
    }

    public void printMsg() {
        // get a reference to the thread running this
        Thread t = Thread.currentThread();

        if ( t == creatorThread ) {
            System.out.println("Creator thread");
        } else if ( t == this ) {
            System.out.println("New thread");
        } else {
            System.out.println("Mystery thread --unexpected!");
        }
    }

    public static void main(String[] args) {
        TwoThread tt = new TwoThread();
        tt.start();

        for ( int i = 0; i < 10; i++ ) {
            tt.printMsg();
        }
    }
}
程序中的creatorThread = Thread.currentThread();和Thread t = Thread.currentThread();是什么意思？？？

搜索更多相关的解决方案: reference running private thread public

----------------解决方案--------------------------------------------------------
实例化
----------------解决方案--------------------------------------------------------
Thread.currentThread()可以获取当前线程的引用
可能这么说你不会太明白，这样吧，你看我增加了两句输出的代码

程序代码：

public class TwoThread extends Thread {
    private Thread creatorThread;

    public TwoThread() {
        // make a note of the thread that constructed me!
        creatorThread =Thread.currentThread();
    }

    public void run() {
        for ( int i = 0; i < 10; i++ ) {
            printMsg();
        }
    }

    public synchronized void printMsg() {
        // get a reference to the thread running this
        Thread t = Thread.currentThread();
       System.out.println(t.getId() + " | " + t.getName());//增加代码
       System.out.println(creatorThread.getId() + " | " + creatorThread.getName());//增加代码

        if ( t == creatorThread ) {
            System.out.println("Creator thread");
        } else if ( t == this ) {
            System.out.println("New thread");
        } else {
            System.out.println("Mystery thread --unexpected!");
        }
    }

    public static void main(String[] args) {
        TwoThread tt = new TwoThread();
        tt.start();

        for ( int i = 0; i < 10; i++ ) {
            tt.printMsg();
        }
    }
}