Savitribai Phule Pune University T.Y.B.B.A.(C.A.) Advanced Java Practical Slip 7 Answers

 

Q.1. Advanced Java:

A) Write a JSP script to validate given E-Mail ID.

Answer :

<%@ page language="java" %>

<%

  String email = request.getParameter("email"); // retrieve email from form data

  String regex = "^[\\w-\\.]+@([\\w-]+\\.)+[\\w-]{2,4}$"; // regular expression for email validation

 

  if (email.matches(regex)) {

    out.println("Valid email address"); // if email matches the regex, print "Valid email address"

  } else {

    out.println("Invalid email address"); // if email does not match the regex, print "Invalid email address"

  }

%>

 

 

B) Write a Multithreading program in java to display the number’s between 1 to 100

 continuously in a TextField by clicking on button. (use Runnable Interface).

Answer :

import java.awt.event.*;

import javax.swing.*;

 

class alpha extends Thread {

    public void run() {

        System.out.println("********* java program using multithreading *********");

    }

}

 

public class Slip7B {

    public static void main(String[] args) {

        alpha a1 = new alpha();

        System.out.print(a1);

        JFrame f = new JFrame("Slip7B");

        final JTextField tf = new JTextField();

        tf.setBounds(50, 50, 150, 20);

        JButton b = new JButton("Display");

        b.setBounds(50, 100, 95, 30);

        b.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {

                for(int i=0; i<=100; i++){

                    tf.setText("Enter String"+ i);

                }

               

                a1.start();

            }

        });

        f.add(b);

        f.add(tf);

        f.setSize(400, 400);

        f.setLayout(null);

        f.setVisible(true);

    }

}