setInterval（）需要解决方案

Question

问题是我的函数在使用setInverval（）后只执行一次。任何人都知道如何解决它，所以蛇对象的update（）方法实际上一遍又一遍地运行？

以下是代码：

     final private long feedbackValue = 0x87654321;
     private long state;

public void initialize(long initialValue) {
    int count = 0;
    state = feedbackValue ^ initialValue;

    System.out.println("State "+count+":"+ String.format("0x%08X",state));
    while (count < 8) {
        update();

        count++;
        System.out.println("State "+count+":"+ String.format("0x%08x",state));
    }

}//end initialize method

private void update() {
    if ((state & 1) == 0) {
        state = state >>> 1;

    } else {
        state = (state >>> 1)^feedbackValue;

    }

}//end update method