Check out example codes for "random class". It will help you in understanding the concepts better.

Code Example 1

import java.util.Random;
public class Example {
   public static void main(String[] args) {
      Random rd = new Random(); // creating Random object
      System.out.println(rd.nextFloat()); // displaying a random float value between 0.0 and 1.0
   }
}

Code Example 2

Random rand = new Random(System.currentTimeMillis());

Code Example 3

Random rd = new Random(); //Create an instance of Random Class
int x = rd.Next(1,50);  //Generates a random number of int datatype between 1 and 50
Console.WriteLine(x); //Print the random number on Console

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