import java.io.*;
 
public class UserValidation { 
 
   //declare variables 
   private int id = 0; 
   private String firstname = ""; 
   private String lastname = ""; 
   private String email = ""; 
 
   private BufferedReader input = new BufferedReader (new InputStreamReader(System.in)); 
 
   
   public UserValidation(int id, String firstname, String lastname, String email){
      this.id = id;
      this.firstname = firstname;
      this.lastname = lastname;
      this.email = email;
   }
 
   //you can throw NumberFormatException to verify if the user entered an integer
   // parseInt throws a NumberFormatException if the argument is not valid 
   public int getId() throws IOException{ 
 
      System.out.println("Input UserID:");    
      id = Integer.parseInt(input.readLine());    
      return id; 
  } 
 
  public String getfName(){ 
     return firstname; 
  }   
 
  public String getlName(){ 
     return lastname; 
  } 
 
  public String getEmail(){ 
     return email; 
  } 
     
  public void display(){ 
     // you must catch the IOException thrown by getId function
     try{ 
        System.out.println("  " + getId() + " " + getfName() + " " + getlName() + "  " + getEmail()); 
     }catch(IOException io){
          
     }
  } 
 
   public static void main (String args[]){ 
        //initialize user data members with an   appropriate constructor or set functions 
        UserValidation user = new UserValidation(1234,"Tarba","Dan","dtarba@yahoo.com"); 
 
        user.display(); 
   } 
}//:~ [/java/

  import java.util.StringTokenizer ;
 class Strings {
  public static void main(String[]) args){ 
 
      String str = "Username and password";
      StringTokenizer strTokenizer = new 
                 StringTokenizer(str);
 
      while(strTokenizer.hasMoreTokens())
         System.out.println(strTokenizer.nextToken());
  }
}