How to make a countdown timer in Java [closed]

Question

I'm a beginner (student) in programming and was assigned to create a game. The game I'm making is called boggle. In which the player have to find words in a random letter board within a given time, but I'm having trouble with creating the timer. This is what it my timer should do:

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• dynamic input for the time (set time)
• countdown from input time to 0
• when o => jump out of loop

All I need to know is how to make it countdown. I don't think I need a ActionListener because it starts ticking the moment the class is created.

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Any help, advice, links, push in the right direction will be accepted with open arms.

Answer 1

import java.util.Scanner; import java.util.Timer; import java.util.TimerTask;  public class Stopwatch { static int interval; static Timer timer;  public static void main(String[] args) {     Scanner sc = new Scanner(System.in);     System.out.print("Input seconds => : ");     String secs = sc.nextLine();     int delay = 1000;     int period = 1000;     timer = new Timer();     interval = Integer.parseInt(secs);     System.out.println(secs);     timer.scheduleAtFixedRate(new TimerTask() {          public void run() {             System.out.println(setInterval());          }     }, delay, period); }  private static final int setInterval() {     if (interval == 1)         timer.cancel();     return --interval; } } 

Try this.

Answer 2

You'll see people using the Timer class to do this. Unfortunately, it isn't always accurate. Your best bet is to get the system time when the user enters input, calculate a target system time, and check if the system time has exceeded the target system time. If it has, then break out of the loop.