Generate a random string in Java

Let us first declare a string array and initialize −

String[] strArr = { "P", "Q", "R", "S","T", "U", "V", "W" };

Now, create a Random object −

Random rand = new Random();

Generate random string −

int res = rand.nextInt(strArr.length);

Example

 Live Demo

import java.util.Random; public class Demo {    public static void main(String[] args) {       String[] strArr = { "P", "Q", "R", "S","T", "U", "V", "W" };       Random rand = new Random();       int res = rand.nextInt(strArr.length);       System.out.println("Displaying a random string = " + strArr[res]);    } }

Output

Displaying a random string = R

Let us run it again to get distinct random string −

Displaying a random string = Q