Core Java TYBBA (CA) Pratical Slip 20 Savitribai Phule Pune University

Mr PVK

December 13, 2022

 Slip 20

A) Write a java program using AWT to create a Frame with title “TYBBACA”, background color RED. If user clicks on close button then frame should close.

 

 import javax.swing.*;

import java.awt.*; 

class Slip20a{

    public static void main(String args[]) {

        JFrame frame = new JFrame("TYBBA CA");

        frame.setSize(400, 400);

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        frame.getContentPane().setBackground(Color.RED);

        frame.setVisible(true);

    }

}

Program Output :

B) Construct a Linked List containing name: CPP, Java, Python and PHP. Then extend your java program to do the following: 

        i. Display the contents of the List using an Iterator 

        ii. Display the contents of the List in reverse order using a ListIterator

import java.util.*;

    public class Slip20b{

        public static void main (String args[]){

            LinkedList al = new LinkedList<>();

            al.add("CPP");

            al.add("JAVA");

            al.add("Python");

            al.add("PHP");

            System.out.println("Display content using Iterator...");

            Iterator il=al.iterator();

            while(il.hasNext()){

                System.out.println(il.next());

            }

            System.out.println("\nDisplay Content Revverse Using ListIterator");

            ListIterator li1=al.listIterator();

            while(li1.hasNext()){

                li1.next();

            }

            while(li1.hasPrevious()){

                System.out.println("" + li1.previous());

            }

        }

    }

Program Output: 

Display content using Iterator...

CPP

JAVA

Python

PHP

Display Content Revverse Using ListIterator

PHP

Python

JAVA

CPP

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