How to Generate random numbers in java

Random Class include in  Util  library in java...

import java.util.Random

Example No 1:

 public static void main(String[] args) 
{

        Random rm=new Random();
{

 System.out.println(rm.nextInt(1000));
 

   }
}

Example No 2:
public static void main(String[] args)
 {

 Random rm=new Random();
        int i;
  for(i=1;i<=10;i++)
        {
  System.out.println(rm.nextInt(i));
      }   
    }
}