我创建了计时器.如何将计时器格式更改为秒,以便它不会是长号?谢谢
private long startTime = System.currentTimeMillis();
Timer timer = new Timer(1000, this);
timer.start();
timer.stop();
long endTime = System.currentTimeMillis();
long timeInMilliseconds = (endTime - startTime);
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