What is the output:

import java.util.Scanner;
public class Simple 
 {
     int a;
     Scanner sc=new Scanner(system.in);
     void read()
     {
         System.out.println("Enter the value of a");
         a=sc.nextint();
     }
     void print()
     {
         System.out.println("value of a="+a);
     }
    public static void main(String args[ ]) 
    {
        HelloWorld h= new HelloWorld();
        h.read();
    }

Take a=4

If Output is error mention them.