Why this loop is infinity? [Java]

Question

Why this code is an infinity loop? How I can fix it?

Calendar cal = new GregorianCalendar();
cal.setTime(new Date());

while (cal.SECOND < 20){
    System.out.println(cal.SECOND);
}

Thanks you in advance for yours help

I strongly recommend you don’t use Calendar. That class is poorly designed and long outdated. Instead use for example LocalTime from java.time, the modern Java date and time API. — Anonymous
– Anonymous, Commented May 30, 2022 at 11:59
Does this answer your question? How to get new time in Java? Does this? This? — Anonymous
– Anonymous, Commented May 30, 2022 at 12:00

rates336 · Accepted Answer · 2022-05-28 20:08:51Z

0

I will get answer, SECOND is a constant variable. If you will get return Second with Calendar class you will wrote:

cal.get(Calendar.SECOND); 
//or
cal.getTime().getSeconds();

If someone know why intelIJ crosses out "getSeconds()", but this working please enter answer here or know what is, a difference between these codes.

Thanks you in advance for yours help.

answered May 28, 2022 at 20:08

rates336

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1 Comment

Anonymous Over a year ago

First, this does not break your infinite loop from the question. If someone know why intelIJ crosses out "getSeconds()", That’s because you are calling the getSeconds method of Date, a method that has been deprecated for more than 25 years because it works unreliably across time zones, which in turn means that you should not use it. BTW you should neither use the Date nor the Calendar class at all. Use java.time.

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