Throw of a die in Java

Question

The throw of a die is a popular program in Java,

public class Die {

    /*  This program simulates rolling a die */
    public static void main(String[] args) {
        int die;   // The number on the die.
        die = (int)(Math.random()*6 + 1);
        System.out.println (die);         
    } // end main()
} // end class

What I wish to do is make it repeat, 500 times. I have not been able to put this program into a loop of 500. I usually program in Python, thus I guess my Java has rusted !

Any help is most welcome !

@BalusC Did you see the part where "die" is singular and "dice" is plural? — Etaoin, Apr 10 '10 at 03:59
@Etaoin: Oh! I always thought it was dice-dices. I'll rollback it. Many thanks for noting. — BalusC, Apr 10 '10 at 04:02
@Arkapravo: I'm glad you decided to ask here instead of copying the code and pasting it 499 times. Good for you. — Mark Rushakoff, Apr 10 '10 at 04:12
@Mark Rushakoff: I was actually hitting 'UP arrow' and 'Enter' in the command-line, after about 227 such attempts my fingers started to pain ! ;) — Arkapravo, Apr 10 '10 at 05:05

score 6 · Answer 1 · answered Apr 10 '10 at 03:52

6

You can use the for statement for this. Learn more about it at this Sun tutorial.

E.g.

for (int i = 0; i < 500; i++) {
    // This will be executed 500 times.
}

answered Apr 10 '10 at 03:52

BalusC

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score 6 · Answer 2 · edited May 23 '17 at 12:26

6

It's a little weird to forget how to do a loop, but here's my solution:

Random r = new Random();
for (int i = 0; i < 500; ++i) {
    int die = r.nextInt(6) + 1; // integer in range [1, 6]
    System.out.println(die);
}

Notice that I use Random.nextInt() instead of Math.random(). There are several reasons for that in here

Hope that helps :)

edited May 23 '17 at 12:26

Community

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answered Apr 10 '10 at 04:03

Phil

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@Po : yeah, it is weird .... but I spent a fair amount of time and got to nothing .... guess it is the Python effect ! – Arkapravo Apr 10 '10 at 04:44

score 1 · Accepted Answer · edited Apr 10 '10 at 05:34

1

public class Die {
    /** This program simulates rolling a die */
    public static void main(String[] args) {

       int die;   // The number on the die.

       for(int i = 0; i < 500; i++){
           die = (int)(Math.random()*6 + 1);
           System.out.println (die);    
       }    
    }  // end main()
}  // end class

edited Apr 10 '10 at 05:34

Pascal Thivent

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answered Apr 10 '10 at 03:52

Josh K

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Throw of a die in Java

3 Answers3