Java program to create student report using applet, read the input using text boxes and display the output using buttons.

import java.applet.*;

import java.awt.*;

import java.awt.event.*; /* */

public class StudentReport extends Applet implements ActionListener

{

Label lblTitle, lblRegno, lblCourse, lblSemester, lblSub1, lblSub2;

TextField txtRegno, txtCourse, txtSemester, txtSub1, txtSub2;

Button cmdReport;

String rno = "", course = "", sem = "", sub1 = "", sub2 = "", avg =

"", heading = "";

public void init ()

{

GridBagLayout gbag = new GridBagLayout ();

GridBagConstraints gbc = new GridBagConstraints ();

setLayout (gbag);

lblTitle = new Label ("Enter Student Details");

lblRegno = new Label ("Register Number");

txtRegno = new TextField (25);

lblCourse = new Label ("Course Name");

txtCourse = new TextField (25);

lblSemester = new Label ("Semester ");

txtSemester = new TextField (25);

lblSub1 = new Label ("Marks of Subject1");

txtSub1 = new TextField (25);

lblSub2 = new Label ("Marks of Subject2");

txtSub2 = new TextField (25);

cmdReport = new Button ("View Report"); // Define the grid bag gbc.weighty=2.0; gbc.gridwidth=GridBagConstraints.REMAINDER; gbc.anchor=GridBagConstraints.NORTH; gbag.setConstraints(lblTitle,gbc); //Anchor most components to the right gbc.anchor=GridBagConstraints.EAST; gbc.gridwidth=GridBagConstraints.RELATIVE; gbag.setConstraints(lblRegno,gbc); gbc.gridwidth=GridBagConstraints.REMAINDER; gbag.setConstraints(txtRegno,gbc);gbc.gridwidth=GridBagConstraints.RELATIVE; gbag.setConstraints(lblCourse,gbc); gbc.gridwidth=GridBagConstraints.REMAINDER; gbag.setConstraints(txtCourse,gbc);gbc.gridwidth=GridBagConstraints.RELATIVE;

gbag.setConstraints (lblSemester, gbc);

gbc.gridwidth = GridBagConstraints.REMAINDER;

gbag.setConstraints (txtSemester, gbc);

gbc.gridwidth = GridBagConstraints.RELATIVE;

gbag.setConstraints (lblSub1, gbc);

gbc.gridwidth = GridBagConstraints.REMAINDER;

gbag.setConstraints (txtSub1, gbc);

gbc.gridwidth = GridBagConstraints.RELATIVE;

gbag.setConstraints (lblSub2, gbc);

gbc.gridwidth = GridBagConstraints.REMAINDER;

gbag.setConstraints (txtSub2, gbc);

gbc.anchor = GridBagConstraints.CENTER;

gbag.setConstraints (cmdReport, gbc);

add (lblTitle);

add (lblRegno);

add (txtRegno);

add (lblCourse);

add (txtCourse);

add (lblSemester);

add (txtSemester);

add (lblSub1);

add (txtSub1);

add (lblSub2);

add (txtSub2);

add (cmdReport);

cmdReport.addActionListener (this);

} public void actionPerformed (ActionEvent ae)

{

try

{

if (ae.getSource () == cmdReport)

{

rno = txtRegno.getText ().trim ();

course = txtCourse.getText ().trim ();

sem = txtSemester.getText ().trim ();

sub1 = txtSub1.getText ().trim ();

sub2 = txtSub2.getText ().trim ();

avg =

"Avg Marks:"

((Integer.parseInt (sub1) Integer.parseInt (sub2)) / 2);

rno = "Register No:" rno;

course = "Course :" course;

sem = "Semester :" sem;

sub1 = "Subject1 :" sub1;

sub2 = "Subject2 :" sub2;

heading = "Student Report";

removeAll ();

showStatus ("");

repaint ();

}

}

catch (NumberFormatException e)

{

showStatus ("Invalid Data");

}

}

public void paint (Graphics g)

{

g.drawString (heading, 30, 30);

g.drawString (rno, 30, 80);

g.drawString (course, 30, 100);

g.drawString (sem, 30, 120);

g.drawString (sub1, 30, 140);

g.drawString (sub2, 30, 160);

g.drawString (avg, 30, 180);

}}