The Java Boutique: Free Java Applets, Games, Programming Tutorials, and Downloads - Introduction to Java

Articles : JavaBoutique's Introduction to Java : Q and A :

A Basic Form Applet

Q

Dear Selena,
Can you help me make a code for four labels and a textfield each with a send request button below?
I am currently studying on my own java programming.

 
Name                            Textfield
Street Address                  Textfield
City, Street Address, Zip Code	Textfield
Requested Info                  Textfield
 
Send Request(button)

Looking forward from your help.
More power and regards.

A

This is in no way a well-written Java solution, but it should give you the basic idea....

Test.java

import java.awt.Label;
import java.awt.TextField;
import java.awt.Button;
import java.awt.Event;
import java.net.URL;
import java.io.IOException;
import java.io.DataInputStream;
import java.applet.Applet;

public class Test extends Applet {

private	Label		nameLabel;
private TextField	nameValue;
private	Label		streetAddrLabel;
private TextField	streetAddrValue;
private Button		submitButton;

public void init() {
	setLayout(null);

	nameLabel = new Label("Name");
	nameLabel.reshape(10,10,100,25);
	add(nameLabel);

	nameValue = new TextField();
	nameValue.reshape(110,10,100,25);
	add(nameValue);

	streetAddrLabel = new Label("Street Address");
	streetAddrLabel.reshape(10,40,100,25);
	add(streetAddrLabel);

	streetAddrValue = new TextField();
	streetAddrValue.reshape(110,40,100,25);
	add(streetAddrValue);

	submitButton = new Button("Send Request");
	submitButton.reshape(110,70,100,25);
	add(submitButton);
}
public boolean handleEvent(Event evt) {
	if (evt.target == submitButton &&
	    evt.id == Event.ACTION_EVENT) {
		try {
			String url = getCodeBase() + 
				    "cgi-bin/test.cgi?fname=" +
				    nameValue.getText() +
				    "&strAddr=" +
				    streetAddrValue.getText();
			URL cgiScript = new URL(url);
			System.out.println("URL: " + url);
                        DataInputStream dis = new
DataInputStream(cgiScript.openStream());
			String line = dis.readLine();
                        while ((line != null)) {
                        	System.out.println(line);
				line = dis.readLine();
			}
		}
                catch (IOException e){
                        System.out.println("Error reading CGI: " +
e.getMessage());
                }
        }
	return super.handleEvent(evt);
}

Test.html

<HTML>
<HEAD>
<TITLE>Test Applet</TITLE>
</HEAD>
<BODY>
<APPLET CODE = "Test.class" WIDTH = "600" HEIGHT = "400">
</APPLET>
</BODY>
</HTML>

Test.cgi

#!/usr/local/bin/perl

use CGI;

$CGI = new CGI();
print $CGI->header();
print $CGI->param('fname');
print $CGI->param('strAddr');

}

Selena Sol contributes to the JavaBoutique's Introduction to Java. Selena curently works for Barclays Capital in London, one of the leading global investment banks in Europe and has worked as a software developer for the National Center for Human Genome research, Microline Software, Neuron Data, and Electric Eye in Singapore. Selena is perhaps best-known for creating the Public Domain Web Script Archive (Extropia) and writing several books on Web Programming (Perl, CGI, Java).
Email: selena@extropia.com

Applet Index
(sorted alphabetically)
A B C D E F G H I J K
L M N O P Q R S T U
V W X Y Z #s

The Java Source
(applets w/source code)
A B C D E F G H I J K
L M N O P Q R S T U
V W X Y Z

How to Add Java Applets to Your Site

New on the Java Boutique:

New Review:

Time Management Made Easy with the Quartz Enterprise Job Scheduler
Why not just use the Java timer API? This open source scheduling API boasts simplicity, ease-of-integration, a well-rounded feature set, and it's free!

New Applet:

Reverse Complement
Reverse Complement is a simple applet that converts DNA or RNA sequences into three useful formats.