Generate/create random GUID or UUID in java (JUG library/example)

• Generate guid or uuid using RandomBasedGenerator class of Java UUID Generator (JUG) library.
• In current post, we will generate random uuid using JUG library.
  1. Generate random UUID using RandomBasedGenerator class in java.
  2. Generate custom random UUID using input random number in java.

1. Maven dependency of JUG library

<dependency>
	<groupId>com.fasterxml.uuid</groupId>
	<artifactId>java-uuid-generator</artifactId>
	<version>3.1.3</version>
</dependency>

2. Generate or create random GUID/UUID in java (Example/ JUG library)

package org.learn.uuid;

import com.fasterxml.uuid.Generators;
import com.fasterxml.uuid.NoArgGenerator;

import java.util.Random;
import java.util.UUID;

public class RandomUUID {
    public static void main(String[] args) {

        NoArgGenerator randomBasedGenerator = Generators.randomBasedGenerator();

        //Generate random UUID generator
        UUID firstUUID = randomBasedGenerator.generate();
        System.out.printf("1. First UUID is : %s ", firstUUID.toString());

        UUID secondUUID = randomBasedGenerator.generate();
        System.out.printf("\n2. Second UUID is :%s ", secondUUID.toString());

        //Generate custom UUID from java.util.random
        randomBasedGenerator = Generators.randomBasedGenerator(new Random(100));
        UUID customUUID = randomBasedGenerator.generate();
        UUID anotherCustomUUID = randomBasedGenerator.generate();

        System.out.printf("\n3. Custom UUID using random number :%s ", customUUID.toString());
        System.out.printf("\n4. Another custom UUID : %s ", anotherCustomUUID.toString());
    }
}

3. Output: Generate random GUID/UUID in java (Example/ JUG library)

1. First UUID is : 0dcc3525-21df-4d9b-8c35-2521dfbd9bac 
2. Second UUID is :78954fe7-d882-4e62-954f-e7d8824e6223 
3. Custom UUID using random number :b8d59fd5-bc12-4bb4-b1e9-f344b73ee369 
4. Another custom UUID : aacaf867-070c-4774-8747-e6984d95fa51