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How to display random numbers less than 20 in Java
At first, create a Random class object −
Random rand = new Random();
Now, create a new array −
int num; int arr[] = new int[10];
Loop through and set the Random nextInt with 20 as parameter since you want random numbers less than 20 −
for (int j = 0; j <= 9; j++) { num = 1 + rand.nextInt(20); arr[j] = num; }
Example
import java.util.Arrays; import java.util.Random; public class Demo { public static void main(String[] args) { Random rand = new Random(); int num; int arr[] = new int[10]; for (int j = 0; j<= 9; j++) { num = 1 + rand.nextInt(20); arr[j] = num; } System.out.println("Random numbers less than 20 = "+Arrays.toString(arr)); } }
Output
Random numbers less than 6 = [4, 13, 14, 19, 1, 11, 17, 1, 11, 4]
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