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Generate 10 random four-digit numbers in Java
To generated random integer, use the Random class with nextInt. At first, create a Random object −
Random rand = new Random();
The Random above is a random number generator. Now, pick the random numbers one by one. We want 10 random four-digit numbers, therefore loop it until i = 1 to 10 −
for (int i = 1; i<= 10; i++) {
intresRandom = rand.nextInt((9999 - 100) + 1) + 10;
System.out.println(resRandom);
}The following is an example to generate 10 random four-digit numbers −
Example
import java.util.Random;
public class Demo {
public static void main(String[] args) {
Random rand = new Random();
System.out.println("Random numbers...");
for (int i = 1; i<= 10; i++) {
int resRandom = rand.nextInt((9999 - 100) + 1) + 10;
System.out.println(resRandom);
}
}
}output
Random numbers... 6075 4943 2141 5701 4181 9534 3539 6793 3058 4766
Updated on: 30-Jul-2019
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