[Solved] random function in Java [closed]

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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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solved random function in Java [closed]