Write a program to create student report using applet, read the input using text boxes and display the o/p using buttons.
Source code
import java.applet.*; import java.awt.*; import java.awt.event.*;
/* <applet code="StudentReport.class",width=500 height=500>
</applet>*/
public class StudentReport extends Applet implements ActionListener
{
Label lblTitle,lblRegno,lblCourse,lblSemester,lblSub1, lblSub2;
Java Lab Manual Page 8
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;
Java Lab Manual Page 9
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);
Java Lab Manual Page 10
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);
}
}
