class HelloWorld {    public static void main(String[] args) throws InterruptedException {        Thread myThread = new Thread() {            public void run(){                System.out.println("Hello from new Thread!");            }        };                myThread.start();        Thread.yield();                System.out.println("Hello from main Thread!");        myThread.join();    }}《七周七并發(fā)模型》作者說(shuō)結(jié)果可能是結(jié)果可能一Hello from main Thread!Hello from new Thread!結(jié)果可能二Hello from new Thread!Hello from main Thread!為什么我的結(jié)果只有一。