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PracticalNo10 2

This document describes a Java program that demonstrates key status events in an Applet window. It includes a graphical user interface with labels, text fields, and a button to multiply two numbers entered by the user. The program handles input validation and displays the result or an error message accordingly.

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Ashish Mavani
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12 views2 pages

PracticalNo10 2

This document describes a Java program that demonstrates key status events in an Applet window. It includes a graphical user interface with labels, text fields, and a button to multiply two numbers entered by the user. The program handles input validation and displays the result or an error message accordingly.

Uploaded by

Ashish Mavani
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Practical No.

: 10

Practical Name: Write a program to demonstrate status of key on Applet window such as
KeyPressed, KeyReleased, KeyUp, KeyDown.

Roll No.: 47

Student Name: Mavani Ashish Shantilal

Program:
import java.awt.*;
import java.awt.event.*;

class practical10_2 extends Frame implements ActionListener


{
Label l1, l2, l3;
TextField t1, t2;
Button b1;
practical10_2()
{
setTitle("ActionListener");
setVisible(true);
setSize(310,200);
setLayout(null);

l1 = new Label("Enter Number One: ");


l1.setBounds(50,50,100,20);
l2 = new Label("Enter Number Two: ");
l2.setBounds(50,80,100,20);
l3 = new Label("Result is: ");
l3.setBounds(50,140,200,20);
t1 = new TextField();
t1.setBounds(160,50,100,20);
t2 = new TextField();
t2.setBounds(160,80,100,20);
b1 = new Button("Multipy");
b1.setBounds(50,110,80,20);
add(l1);
add(t1);
add(l2);
add(t2);
add(b1);
add(l3);
b1.addActionListener(this);
}
public void actionPerformed(ActionEvent ae)
{
try
{
double no1 = Double.parseDouble(t1.getText());
double no2 = Double.parseDouble(t2.getText());
double result = no1 * no2;
l3.setText("Result is: "+result);
}
catch (NumberFormatException ex)
{
l3.setText("Invalid input. Please enter numbers.");
}
}
public static void main(String args[])
{
practical10_2 pr10_2 = new practical10_2();
}
}

Output:

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