How to generate random number in java

java.util.Random class is use to generate some random number in java.

Methods of Random class

Method Name	Method Working
protected int next(int bits)	Use to generates the next pseudorandom number.
double nextDouble()	Returns the next pseudorandom
float nextFloat()	Returns the next pseudorandom
int nextInt()	Returns the next pseudorandom
int nextInt(int n)	Returns a pseudorandom
long nextLong()	Returns the next pseudorandom.

Example

package javaenotes;

import java.util.Random;

public class StudentInfo extends Thread {
 public static void main(String[] args) {
 Random random = new Random();

 for (int i = 0; i < 5; i++) {
    int randomNumber = random.nextInt();
    System.out.println("Random number: " + randomNumber);
 }

 }
}

Output

Random number: 684985468
Random number: 824215667
Random number: 2099679075
Random number: -831622058
Random number: 979547511