Praktikum's task Network and Apparatus Mathematics moves secondly be make one http simple server at localhost. With utilize SocketServer's function, therefore gets to be made one server which will wait “panggilan” on port 80 (HTTP). And will send html's code while called.

SocketServer works in one looping that perpetual to wait marks sense connection to go to port 80 on localhost. There is 4 constructor on SocketServer for example:

1. public ServerSocket(int port) throws BindException, IOException
2. public ServerSocket(int port, int queueLength) throws BindException, IOException
3. public ServerSocket(int port, int queueLength, InetAddress bindAddress) throws IOException
4. public ServerSocket( ) throws IOException // Java 1.4

A few days ago, my friend asks for to help her works PR its Programming. PR's problem terminologicals i am goodly difficult also, since I newbie in programming. Programming languages who may be utilized is C,C++, Java. And since i am java person, therefore I choose to utilize Java.hehe.. Since I really be intend to study Java language.

Problem PR is we make program who will read one input file “indata.txt”, one that meaty word which will at test do correspond to order, if accords therefore that diwrite will into one file “legalwords.txt”, conversely if incorrectly will at write into file “badwords.txt”. Among word one by another word in file “indata.txt” came to pieces by one tabulator, on my program, I utilize tabulator tab(\t). Order that is utilized for mengetest to say is

a. first syllable may not as numeral as.
b. say has less than 8 characters.
c. say just may lap over of letter (a..z, A..Z), number (0..9), atau simbol underscore(’_').

Since I newbie in Java,and was wonted utilizes it, requiring time rather long time to think up syntax syntax that is used. On progam I, its program path is as follows:

a. Make one BufferedReader for FileReader(”indata.txt”). Make PrintWritter for FileWriter legalwords.txt and badwords.txt.
b. Then by use of StringTokenizer to account word amount in file indata.txt.
c. After knows total token / says, therefore then with looping to check about word / token, what appropriate ruling or not.
d. Then afters is sorted, therefore word suitably at write goes to legalwords.txt, and unsuitably diwrite goes to badwords.txt

Java provides InetAddress's function to get host's internet protocol address and also name a computer. host's internet protocol address and also name that is gotten don't cling to host's internet protocol address and name local computer only, but can also be utilized for mengecek host's internet protocol address and name at Internet, obviously by condition of computer we most link with Internet. This logistic purpose also relates hand in glove with setting DNS on computer that we utilizes.

1. Make one project is Netbeans new


2. Add one JFrame Form


3. Provede with 2 tags, 2 numbers TextField (txtIPAddress dan txtNamaHost) and 3 Button (btnCheckIPAddress, btnCheckHostName dan btnCheckLokal). See example on pictured following:


4. Following code cannikin type on btnCheckHostName, event actionPerformed
   
   
   1. private void btnCheckHostNameActionPerformed(java.awt.event.ActionEvent evt) {
   
   
   2. try {
   
   
   3. String strHostName = InetAddress.getByName(txtIPAddress.getText()).getHostName();
   
   
   4. JOptionPane.showMessageDialog(null, "Host name dari IP Address '" + txtIPAddress.getText() +"' =
      "+ strHostName);
   
   
   5. } catch (UnknownHostException ex) {
   
   
   6. JOptionPane.showMessageDialog(null, ex);
   
   
   7. Logger.getLogger(frmIpAddress.class.getName()).log(Level.SEVERE, null, ex);
   
   
   
   
   9. }
   
   
   
   
   11. }

   
   


5. Do import library that needful (import java.net.InetAddress; import javax.swing.JOptionPane;)


6. Following code cannikin type on btnCheckIPAddress, event actionPerformed
   
   
   

   
   
   1. private void btnCheckIPAddressActionPerformed(java.awt.event.ActionEvent evt) {
   
   
   
   
   3. try {
   
   
   4. String strIPAddress = InetAddress.getByName(txtHostName.getText()).getHostAddress() ;
   
   
   5. JOptionPane.showMessageDialog(null, "Alamat IP dari '"+txtHostName.getText() +"' ="+ strIPAddress);
   
   
   6. } catch (UnknownHostException ex) {
   
   
   7. JOptionPane.showMessageDialog(null, ex);
   
   
   8. Logger.getLogger(frmIpAddress.class.getName()).log(Level.SEVERE, null, ex);
   
   
   
   
   10. }
   
   
   11. }

   
   


7. Following code cannikin type on btnCheckLokal event actionPerformed


1. private void btnCheckLocalActionPerformed(java.awt.event.ActionEvent evt) {


2. try {


3. InetAddress AlamatInternet = InetAddress.getLocalHost();


4. JOptionPane.showMessageDialog(null, "Host name lokal : " +AlamatInternet.getHostName());


5. JOptionPane.showMessageDialog(null, "IP Address lokal : " +AlamatInternet.getHostAddress() );


6. } catch (UnknownHostException ex) {


7. JOptionPane.showMessageDialog(null, ex);


8. Logger.getLogger(frmIpAddress.class.getName()).log(Level.SEVERE, null, ex);




10. }


11. }



8. Save and runs application (SHIFT + F6). Insert IP Address and click on “Check Host Name” or insert host name and click “Check IP Address”. Check IP and Host Local don't need entry. Following is umpteen screenshot message one that performs:
   
   
   

   

   
   

   

   This program not smart's ala detect entry what that internet protocol address or host name. To easy, I utilize 2 numbers TextField for example. On terapan's application, input IP Address or Host Name can thru get variable.

Introduction
Go to any travel or event booking website and you'll find the same user interface for collecting date information: the Calendar. Providing such an interface in an ASP.NET application is a breeze, thanks to the built-in Calendar Web control. There are two downsides to ASP.NET's Calendar control: first, it is not very useful when selecting dates far into the future or past, as you can only navigate to the next or previous month; and, second, the Calendar does not use AJAX techniques, so each click, be it selecting a date or moving to the next or previous month, requires a full postback.

Mehmet Genc addressed this first shortcoming in Extending the Calendar Control's Date Navigation by showing how to add month and year drop-down lists. But Mehmet's article was written in 2004 and since then AJAX-enabled websites have become all the rage. I decided it was high time to update Mehmet's custom Calendar control to support AJAX. Specifically, I implemented the AJAX-enabled Calendar control as a User Control. The User Control renders a TextBox control that, when clicked, displays a Calendar control from which the user can select the date. Like with Mehmet's Calendar, users can quickly jump to a particular month or year by using two drop-down lists. And best of all, the user experience is very responsive.

First Things First: Ensuring Your Environment Supports ASP.NET AJAX
To use this AJAX-enabled Calendar control, make sure your development environment supports the ASP.NET AJAX framework. If you are using Visual Studio 2008, then this framework is already present. If, however, you are using Visual Studio 2005, then you need to download and install the ASP.NET AJAX framework from Microsoft's site, http://www.asp.net/ajax/. For more information on this process, refer to Scott Mitchell's article, AJAX Basics and Getting Started with Microsoft's ASP.NET AJAX Framework.

My AJAX-enabled Calendar control uses the UpdatePanel and PopupControlExtender controls. While the UpdatePanel is part of the framework's "Essential Components," the PopupControlExtender is part of the ASP.NET AJAX Control Toolkit, which is a separate download (even for Visual Studio 2008). If you check out the Control Toolkit samples you'll notice that there's an AJAX Calendar control in the Toolkit. I built my own AJAX-enabled Calendar control instead of using the one in the Control Toolkit because I wanted to add the month/year drop-down lists. Also, there have been a variety of display bugs with the Calendar control (see the AJAX Control Toolkit work item list). I invite you to try out mine and the AJAX Control Toolkit's Calendar and use the one that's best suited for your needs.

Getting Started with My AJAX-Enabled Calendar Control
The complete code for this User Control, along with a sample web page, is available at the end of this article. You should be able to open the folder as a website in either Visual Studio 2005 or Visual Studio 2008.

The Calendar is implemented in the CoolCalendar.ascx file as a User Control. Take a moment to examine the markup in this page. You'll find the following key controls:

1. The DateTextFrom TextBox
2. A RequiredFieldValidator named DateTextFromRequired
3. A Panel control
4. An UpdatePanel control
5. The month and year DropDownList controls
6. The Calendar control
7. An AJAX PopupControlExtender control

There are a few of these controls that warrant further discussion. Take note of the markup for the DateTextFrom TextBox control (item 1):

This bit of client-side script ensures that whenever the user clicks on the DateTextFrom TextBox, focus is immediately taken away from the control. The idea here - as we'll see shortly - is that whenever the user focuses on the TextBox it is immediately taken away and the Calendar control is displayed. This forces the user to select a date from the calendar. If you remove the onfocus script, the user could enter the date into the TextBox via the keyboard. I find this option undesirable due to the possibility of user entry errors.

The RequiredFieldValidator (item 2) is used to optionally ensure that a date value has been supplied. The User Control contains a Boolean public property named DateTextRequired. Setting this value to True enables the RequiredFieldValidator; setting it to False disables it. By default, the RequiredFieldValidator is enabled.

The AJAX PopupControlExtender control pops up a particular Panel on the page in response to a certain client-side action. The Panel control (item 3) defines the region that is popped up, and includes the UpdatePanel (item 4), the month/year DropDownLists (item 5), and the Calendar control (item 6).

The final piece in the markup page is the PopupControlExtender control (item 7) and is configured to display the Panel (item 3) whenever the DateTextFrom TextBox receives focus. This behavior is dictated entirely through the PopupControlExtender control's properties, there's no need to write any JavaScript or code!

, Displaying Extended Details in a GridView Using an Ajax Pop-Up.

Examining the AJAX-Enabled Calendar Control's Code
The User Control's code-behind class defines a couple of properties and includes the code to populate the month/year DropDownLists and the user's interactions with the Calendar. The most important property is the DateTextFromValue, which sets or gets the selected date. This property simply reads and writes its value to the DateTextFrom TextBox.

Note: The code available for download at the end of this article includes a VB and C# version of the User Control...

Two additional properties are defined for specifying whether the RequiredFieldValidator should be enabled (DateTextRequired) and the error message to display if the required date value is not supplied (DateTextRequiredText).

The month and year DropDownLists are populated by the Populate_MonthList and Populate_YearList methods, which are called on the first page visit. These methods were taken directly from Mehmet's article. Populate_MonthList returns a list of month names (January, February, ...) while Populate_YearList populates the DropDownList with years from 20 years ago to one year in the future.

When the month or year DropDownList is changed, a partial page postback occurs and the Set_Calendar method is executed. The Set_Calendar method sets the Calendar control's TodaysDate property to the first of the selected month/year.

Whenever the user selects a date within the Calendar, a partial page postback transpires and the Calendar's SelectionChanged event is fired. The Calendar1_SelectionChanged event handler calls the PopupControlExtender control's Commit method, passing in the Calendar's SelectedDate property. The net effect is that the Calendar popup disappears and the selected date is display in the TextBox.

My AJAX-Enabled Calendar Web Control In Action
The download at the end of this article includes a simple demo page, TestCoolCalendar.aspx. The demo illustrates how to use the User Control's DateTextRequired and DateTextRequiredText properties to require a date and show a custom error message. In addition to the User Control, the TestCoolCalendar.aspx includes a Save button that, when clicked, displays the value selected from the Calendar control. This value is retrieved via the User Control's DateTextFromValue property.

Conclusion
In this article we saw how to use the ASP.NET AJAX framework's UpdatePanel and the AJAX Control Toolkit's PopupControlExtender to turn the built-in Calendar control into a richer, AJAX-enabled version. This control is implemented as a User Control, making it a cinch to add to your projects. Thanks again to Mehmet Genc for the initial inspiration and to Scott Mitchell for publishing this article.

Happy Programming!

Swing is one of technology in Java to make one application desktop. This following I load one simple example with swing. One calculator plain. I utilize two numbers class. Class first is that of penampil frame and class second is program from that calculator is alone.

Its example following:

package testing;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;

/**
*
* @author bagus
*/
public class SwingCalculator {
public static void main(String[] args) {
JFrame frame = new Calculator();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}

Then remakes one class at same package

Its output result is as follows:

Hi all readers, this project we will create a database program using Netbeans IDE 6.5 Database and Ms.Access. Software may Netbeans is new for us. Yes the actual program Netbeans is a software used to create a program based on JAVA. We still use the first appearance of white Notepad to create JAVA applications. Akan NotePad but parallel development is replaced by slow start because TEXTPAD facilities provided by this TEXTPAD seems more complete and informative than the notepad. But when we look kebelakang shortages have appeared TEXTPAD again, that is we still have to type the script to make the program components. And that lack is covered by the Netbeans this. Namely to provide component parts without having to type the script to make the withdrawal other GUI Programming Languages. You can create our new project, we:

Here the view that the program will be created:

***> Create database tables and cooperation with the Member as follows:

==================================================================

Noang - Text - 5

Nama - Text - 25

Alamat - Text - 30

Jkel - Yes/no

Agama - Text - 1

NoKTP - Text - 15

NoTelp - Text - 12

Simpanan - Number - LongInt

============================================================

1. Create a design form as shown in the picture. In the form there is a component JTextField, JComboBox, JRadioButton, JPanel, JButton.
2. Change the name of the components that we have entered, especially for components JTextField, JComboBox, JButton, JRadioButton engan way and conditions as follows:

on the project, this time using the provisions of author names the following components to facilitate understanding in making the program code.

Component Component Name Changes

JTextField No Anggota — no

JTextField Nama — nama

JTextField Alamat — alamat

JComboBox Agama — agama

JRadioButton Jkel — RPria dan RWanita

JTextField No KTP — noktp

JTextField No. Telp — notelp

JTextField Simpanan — simpanan

JButton Simpan — bsimpan

JButton Data Baru — bbaru

JButton Keluar — bkeluar

3. After you change the name of each component so it's time to process incoming Coding.

Program Code:
- Below the tab name of your project, click the source:
Under the package type you import the following command to retrieve the sql commands.

=======================================================

import java.sql;

=======================================================

- The declaration of a variable connection, resultset, statement and the other variables that are required

Public under the following class type variables;

=======================================================
//deklarasi variabel global
Connection Con;
ResultSet RsAng;
Statement StatAng;

//variabel for agama
String sagm = “1″;
//variabel for jenis kelamin
Boolean bjkel = true;
//variabel global where data ditemukan
Boolean ada = false;

- Then, under public nama_project (under the introduction of a variable) type the command database connection and table below:

//connection
try
{
String fdata = “z:\\java1\\NetBeans\\Koperasi.mdb”;
Class.forName(”sun.jdbc.odbc.JdbcOdbcDriver”);

// direct connection to the database without dsn
Con= DriverManager.getConnection(”jdbc:odbc:DRIVER={Microsoft Access Driver (*.mdb)};DBQ=” + fdata);
//shows the search process can be in the resultset update
StatAng= Con.createStatement( RsAng.TYPE_SCROLL_SENSITIVE, RsAng.CONCUR_UPDATABLE );
RsAng = StatAng.executeQuery(”Select* from Anggota”);
}
catch(Exception e)
{ System.err.println(”Conection error !” + e.getMessage()); } //getMessage to display the message

=======================================================

- After the connection is successful then the time we go to the key store. Type the following code:

================================================== ====

private void bsimpanActionPerformed(java.awt.event.ActionEvent evt) {

// TODO add your handling code here:

try

{

RsAng.updateString(”Noang”, no.getText());

RsAng.updateString(”Nama”, nama.getText());

RsAng.updateString(”Alamat”, alamat.getText());

RsAng.updateString(”Agama”, sagm);

RsAng.updateBoolean(”Jkel”, bjkel);

RsAng.updateString(”NoKTP”, noktp.getText());

RsAng.updateString(”NoTelp”, notelp.getText());

RsAng.updateDouble(”Simpanan”, Double.parseDouble(simpanan.getText()));

if(ada)

{

//mengedit data yang sudah ada

RsAng.updateRow();

javax.swing.JOptionPane.showMessageDialog(null, “Data Telah Diedit !”);

}

else

//menyisipkan record baru

RsAng.insertRow();

javax.swing.JOptionPane.showMessageDialog(null, “Data Telah Tersimpan !”);

}

catch(Exception e)

{

javax.swing.JOptionPane.showMessageDialog(null, “Data Belum Tersimpan !” + e.getMessage());

}

}

======================================================

- Code Programs for RadioButton Male:

======================================================

private void RPriaActionPerformed(java.awt.event.ActionEvent evt) {

// TODO add your handling code here:

bjkel = true;

}

======================================================

- Code Programs for Women's RadioButton:

======================================================

private void RWanitaActionPerformed(java.awt.event.ActionEvent evt) {

// TODO add your handling code here:

bjkel = false;

}

=====================================================

- To type a ComboBox in the code the program:

=====================================================

private void agamaActionPerformed(java.awt.event.ActionEvent evt) {

// TODO add your handling code here:

// Baca Source objectnya masih JcomboBox

javax.swing.JComboBox soagama = (javax.swing.JComboBox)evt.getSource();

//Membaca Item Yang Terpilih — > String

String sagama = (String)soagama.getSelectedItem();

//pengujian sagama

if (sagama.equals(”Islam”))

sagm = “1″;

else if (sagama.equals(”Kristen”))

sagm = “2″;

else if (sagama.equals(”Hindhu”))

sagm = “3″;

else if (sagama.equals(”Budha”))

sagm = “4″;

else if (sagama.equals(”Konghu Chu”))

sagm = “5″;

}

=====================================================

- Keys To New Data type program:

=====================================================

private void bbaruActionPerformed(java.awt.event.ActionEvent evt) {

// TODO add your handling code here:

no.setText(”");

nama.setText(”");

alamat.setText(”");

noktp.setText(”");

notelp.setText(”");

simpanan.setText(”");

}

=====================================================

- To Exit Button component type in the code the program:

=====================================================

private void bkeluarActionPerformed(java.awt.event.ActionEvent evt) {

// TODO add your handling code here:

//Tutup Koneksi

try

{

Con.close();

RsAng.close();

StatAng.close();

Con = null; RsAng = null; StatAng = null;

}

catch (Exception e){}

System.exit(0);

}

====================================================

Additional notes (rusted Bos)

- To fill the ComboBox religion you click on the ComboBox component on the properties and religious search model, then click the dialog box will appear as follows:

- Add the components in the form buttongroup note discount image below:

Drag to your form. But you will not see But wujudnya.hehehehehe to change the name of the components please enter your navigator to the left side of your monitor. Change the name of its components with the name "bgjkel"

- After entering ButtonGroup components and change the name then click on the component RPria and RWanita properties and then on the search button and change the group into bgjkel.

Congratulations you try a new project in NetBeans IDE 6.5

Author apologize because order is still not known to this article. Because I do not have spare time to improve the view. Thank you already want to visit.

Welcome to NetBeans IDE!

This tutorial provides a very simple and quick introduction to the NetBeans IDE workflow by walking you through the creation of a simple "Hello World" Java console application. Once you are done with this tutorial, you will have a general knowledge of how to create and run applications in the IDE.

This tutorial takes less than 10 minutes to complete.

After you finish this tutorial, you can move on to the learning trails, which are linked from the Documentation, Training & Support page. The learning trails provide comprehensive tutorials that highlight a wider range of IDE features and programming techniques for a variety of application types. If you do not want to do a "Hello World" application, you can skip this tutorial and jump straight to the learning trails.

To complete this tutorial, you need the following software and resources.

Software or Resource	Version Required
NetBeans IDE	version 6.5
Java Development Kit (JDK)	version 6 or version 5

Setting Up the Project

To create an IDE project:

1. Start NetBeans IDE.
2. In the IDE, choose File > New Project (Ctrl-Shift-N), as shown in the figure below.

   New Project menu item selected." class="margin-around" height="85" width="199">

3. In the New Project wizard, expand the Java category and select Java Application as shown in the figure below. Then click Next.
4. In the Name and Location page of the wizard, do the following (as shown in the figure below):
   • In the Project Name field, type HelloWorldApp.
   • Leave the Use Dedicated Folder for Storing Libraries checkbox unselected.
   • In the Create Main Class field, type helloworldapp.HelloWorldApp.
   • Leave the Set as Main Project checkbox selected.

   

5. Click Finish.

The project is created and opened in the IDE. You should see the following components:

• The Projects window, which contains a tree view of the components of the project, including source files, libraries that your code depends on, and so on.
• The Source Editor window with a file called HelloWorldApp open.
• The Navigator window, which you can use to quickly navigate between elements within the selected class.
• The Tasks window, which lists compilation errors as well other tasks that are marked with keywords such as XXX and TODO.

Adding Code to the Generated Source File

Because you have left the Create Main Class checkbox selected in the New Project wizard, the IDE has created a skeleton class for you. You can add the "Hello World!" message to the skeleton code by replacing the line:

            // TODO code application logic here
   

with the line:

            System.out.println("Hello World!");
   

Save the change by choosing File > Save.

The file should look something like the following code sample.

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package helloworldapp;

/**
*
* @author Patrick Keegan
*/
public class HelloWorldApp {

/**
* @param args the command line arguments
*/
public static void main(String[] args) {
       System.out.println("Hello World!");
}

}

Compiling and Running the Program

Because of the IDE's Compile on Save feature, you do not have to manually compile your project in order to run it in the IDE. When you save a Java source file, the IDE automatically compiles it.

To run the program:

• Choose Run > Run Main Project (F6).

The next figure shows what you should now see.

Congratulations! Your program works!

If there are compilation errors, they are marked with red glyphs in the left and right margins of the Source Editor. The glyphs in the left margin indicate errors for the corresponding lines. The glyphs in the right margin show all of the areas of the file that have errors, including errors in lines that are not visible. You can mouse over an error mark to get a description of the error. You can click a glyph in the right margin to jump to the line with the error.

Building and Deploying the Application

Once you have written and test run your application, you can use the Clean and Build command to build your application for deployment. When you use the Clean and Build command, the IDE runs a build script that performs the following tasks:

• Deletes any previously compiled files and other build outputs.
• Recompiles the application and builds a JAR file containing the compiled files.

To build your application:

• Choose Run > Clean and Build Main Project (Shift-F11).

You can view the build outputs by opening the Files window and expanding the HelloWorldApp node. The compiled bytecode file HelloWorldApp.class is within the build/classes/helloworldapp subnode. A deployable JAR file that contains the HelloWorldApp.class is within the dist node.