INTEREST CALCULATION USING APPLET

AIM:

            To write a applet program to design label box and button to calculate simple interest

Algorithm:

Step 1: start the process.

Step 2: import the applet header files AWT classes it support for                                          window based graphics interface.

Step 3: next import statements in applet packages which contains class                                applets.

Step 4: design the screen with label boxes and buttons.

Step 5: add the action listener interface event which is to do action performed.

Step 6: use the required formula to calculate the simple interest.

Step 7: display the result in the screen using drawing method.

Step 8: stop the program.

PROGRAM

import java.awt.*;

import java.applet.*;

import java.awt.event.*;

/*<applet code="ex" width=400 height=200>

</applet>*/

public class ex extends Applet implements ActionListener

{

String str="THE AMOUNT IS";

float amount;

Button b1;

Label l1,l2,l3;

TextField t1,t2,t3;

public void init()

{

setBackground(Color.magenta);

setForeground(Color.blue);

l1=new Label("PRINCIPAL");

t1=new TextField(6);

l2=new Label("RATE ");

t2=new TextField(6);

l3=new Label("YEAR");

t3=new TextField(6);

add(l1);

add(t1);

add(l2);

add(t2);

add(l3);

add(t3);

b1=new Button("CALCULATE");

add(b1);

b1.addActionListener(this);

}

public  void actionPerformed(ActionEvent e)

{

int pri=Integer.parseInt(t1.getText().trim());

int year=Integer.parseInt(t2.getText().trim());

int rate=Integer.parseInt(t3.getText().trim());

amount=(pri*year*rate)/100;

repaint();

}

public void paint(Graphics g)

{

Font font=new Font("Monotype corsiva",Font.BOLD,30);

g.setFont(font);

FontMetrics fm=g.getFontMetrics();

g.setColor(Color.GREEN);

g.drawString(" THE AMOUNT   "+amount,40,100);

}

}