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Asked: 2026-05-31T19:19:45+00:00

I want to know how to get a 4-digit random number in Java. I

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I want to know how to get a 4-digit random number in Java. I was trying to do it and everytime I run the program I always get the same number.
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  1. Editorial Team
    int randomNumber = ( int )( Math.random() * 9999 );

if( randomNumber <= 1000 ) {
    randomNumber = randomNumber + 1000;

    Math.random() is a method that generates a random number through a formula. It returns a double however, so casting is required if you want an integer, float, or etc. The if block makes sure that the number is above 1000 and is a 4-digit number.

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