Skip to main content

Write a program for multilevel inheritance such that country is inherited from continent. State is inherited from country. Display the place, state, country and continent.

 State.java


import java.io.*;
 
 class Continent
 {
      String con;
      BufferedReader r=new BufferedReader(new InputStreamReader(System.in));
      void con() throws IOException
      {
           System.out.println("Enter name of Continent :");
           con=r.readLine();
      }
}

class Country extends Continent
{
      String cou;
     
      void cou() throws IOException
      {
           System.out.println("Enter name of Country :");
           cou=r.readLine();
      }
}

class State extends Country
{
      String sta;
     
      void sta() throws IOException
      {
           System.out.println("Enter name of State :");
           sta=r.readLine();
      }
 
      public static void main(String [] args) throws IOException
      {
           State s=new State();
           s.con();
           s.cou();
           s.sta();
         
           System.out.println("\n\nContinent :"+s.con);
           System.out.println("Country :"+s.cou);
           System.out.println("State :"+s.sta);
      }
}

Comments

Popular posts from this blog

Write a program to read book information (bookid, bookname, bookprice, bookqty) in file “book.dat”. Write a menu driven program to perform the following operations using Random access file: i. Search for a specific book by name. ii. Display all book and total cost

  import java . io .*; import java . util .*; class Book {       String name , id ;       int qty ;       double price , total ;       Book ( String i , String n , String p , String q )      {               name = n ;               id = i ;               qty = Integer . parseInt ( q );               price = Double . parseDouble ( p );               total = qty * price ;      }       public String toString ()      {               System . out . println ( "name\t id\t qty\t price\t total" );               String s = name + "\t" + id + "\t" + qty + "\t" + price + "\t" + total ;           ...

Write a Java program to design a screen using Awt that will take a user name and password. If the user name and password are not same, raise an Exception with appropriate message. User can have 3 login chances only. Use clear button to clear the TextFields.

  import java . awt .*; import java . awt . event .*; import javax . swing .*; class InvalidPasswordException extends Exception {       InvalidPasswordException ()       {             System . out . println ( "Username and password is not same" );       } } public class Password extends Frame implements ActionListener {       Label uname , upass ;       TextField nametext ;       TextField passtext , msg ;       Button login , Clear ;       Panel p ;       int attempt = 0 ;       char c = '*' ;             public void login ()       {             p = new Panel ();             uname = new Label ( "Username : " , Label . CENTER );             upass = n...

) Create the following GUI screen using appropriate layout managers. Accept the name, class , hobbies of the user and apply the changes and display the selected options in a text box.

  import javax.swing.*; import java.awt.*; import java.awt.event.*; class Swing2 extends JFrame implements ActionListener {     JLabel l1 , l2 , l3 ;         JButton b ;         JRadioButton r1 , r2 , r3 ;         JCheckBox c1 , c2 , c3 ;         JTextField t1 , t2 ;         ButtonGroup b1 ;         JPanel p1 , p2 ;     static int cnt ;         private StringBuffer s1 = new StringBuffer ();                 Swing2 ()         {                             b1= new ButtonGroup ();                 p1= new JPanel ();                 p2= new JPanel ();               ...