Halil Karaköse

Mysql Backup and Restore

2012-01-08T18:07:00.003+02:00

Backup

You can use mysqldump to create a simple backup of your database using the following syntax.

mysqldump -u [username] -p [password] [databasename] > [backupfile.sql]

Following is an example of a database backup command:

mysqldump -u mysql_user -p mysql_pass clipbucket > clipbucket.sql

Restore 

The dump file retrieved from from mysqldump command can be restored using mysql command. Following is the general format of restore command:

mysql -u [username] -p [password] [database_to_restore] < [backupfile]

Following is an example of a database restore command:

mysql -u mysql_user -p mysql_pass clipbucket_2 < clipbucket.sql

Solaris: How To Disable/Enable Desktop GUI

2011-02-02T13:49:00.002+02:00

To disable the GUI on startup, run the following command:

/usr/dt/bin/dtconfig -d

Restart the system using init 6 and you will see that GUI will no longer start automatically.

To enable it again, use the following command:

/usr/dt/bin/dtconfig -e

You may just want to start desktop manager without enabling it. Use the following command to start desktop manager, without restarting Solaris:
/etc/init.d/dtlogin start

When is my table last analyzed?

2011-01-08T16:20:00.001+02:00

Following query shows the latest analysis time of tables in Oracle:

SELECT distinct stattype_locked, table_name, last_analyzed
FROM dba_tab_statistics
WHERE owner = 'HR' order by last_analyzed desc;

Solaris: How To Download File In Command Prompt

2010-10-08T11:32:00.001+03:00

wget command is used to download files in unix based operating systems. But in Solaris the command does not seem to exist:

# wget
wget: not found

Actually it exists in the file system. But it just isn't added into PATH by default. The location of command is /usr/sfw/bin/wget. Following is a usage example of wget in Solaris.

# /usr/sfw/bin/wget google.com
--2010-10-08 11:15:20--  http://google.com/
Resolving google.com... 74.125.87.99, 74.125.87.104
Connecting to google.com|74.125.87.99|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: http://www.google.com/ [following]
--2010-10-08 11:15:20--  http://www.google.com/
Resolving www.google.com... 74.125.87.104, 74.125.87.99
Reusing existing connection to google.com:80.
HTTP request sent, awaiting response... 302 Found
Location: http://www.google.com.tr/ [following]
--2010-10-08 11:15:20--  http://www.google.com.tr/
Resolving www.google.com.tr... 74.125.87.104, 74.125.87.99
Reusing existing connection to google.com:80.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/html]
Saving to: `index.html.2'

    [ <=>                                                                                       ] 9,005       --.-K/s   in 0.01s   

2010-10-08 11:15:20 (685 KB/s) - `index.html.2' saved [9005] 

Use DbUnit With Maven

2010-08-16T09:26:00.001+03:00

dbunit is a useful tool for populating test data into databases on the fly.
It is also useful to use this tool to populate application configuration information.
This article demonstrates how to use dbunit with maven.

We require jdbc drivers for our database. Assuming we are using oracle, dbunit plugin's dependency configuration will be as follows:

<dependency>
   <groupId>com.oracle</groupId>
   <artifactId>ojdbc14</artifactId>
   <version>10.2.0.2.0</version>
</dependency>

We also need connection information for our database. We'll use following connection information in our dbunit configuration:

host: jdbc:oracle:thin:@localhost:1521:XE
username: hr
password: hr
driver: oracle.jdbc.driver.OracleDriver

Putting it all together, following is an example configuration for dbunit:

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>dbunit-maven-plugin</artifactId>
    <version>1.0-beta-3</version>
    <configuration>
        <dataTypeFactoryName>org.dbunit.ext.oracle.OracleDataTypeFactory</dataTypeFactoryName>
        <driver>oracle.jdbc.driver.OracleDriver</driver>
        <username>hr</username>
        <password>hr</password>
        <url>jdbc:oracle:thin:@localhost:1521:XE</url>
        <src>src/test/resources/sample-data.xml</src>
        <type>CLEAN_INSERT</type>
        <schema>HR</schema>
        <skip>${skipTests}</skip>
        <transaction>true</transaction>
    </configuration>
    <dependencies>
        <dependency>
            <groupId>com.oracle</groupId>
            <artifactId>ojdbc14</artifactId>
            <version>10.2.0.2.0</version>
        </dependency>
    </dependencies>
</plugin>

Based on this configuration, our dataset file resides in src/test/resources/sample-data.xml file. This file contains our test data. Execute following command to persist the data inside sample-data.xml into the database.

> mvn dbunit:operation

Yet, we don't know how to prepare and/or what to put inside sample-data.xml. If you have a ready to use database, you may not need to prepare sample-data.xml file from scratch. There is another command to export database tables into a dataset file.

> mvn dbunit:export

Upon invoking this command, a new file will be generated under target/dbunit/export.xml which will contain all your test data. You can, later, use this file to reinitialize your test database using "mvn dbunit:operation" command.

Additional Resources:

Maven DBUnit Plugin Homepage:
http://mojo.codehaus.org/dbunit-maven-plugin

DBUnit Getting Started Guide:
http://www.dbunit.org/howto.html

DBUnit Best Practices:
http://www.dbunit.org/bestpractices.html

Intellij IDEA 9 Community Edition Çıktı

2009-11-11T08:16:00.004+02:00

Intellij, version 9 ile beraber community edition ve ultimate edition olarak dagitilmaya başladi:
http://blogs.jetbrains.com/idea/2009/10/intellij-idea-open-sourced/

Community edition'ı asagidaki linkten ucretsiz olarak indirebilirsiniz:
http://www.jetbrains.com/idea/nextversion/free_java_ide.html?utm_source=IDEA_BLOG&utm_media=Anouncement&utm_campaign=IDEA9_CE

Obtaining Information About The Current User In Spring Security

2009-06-10T21:27:00.007+03:00

The details of the principal currently interacting with the application is stored inside SecurityContextHolder. Spring Security uses an Authentication object to represent this information. Use the following code block -from anywhere in your application- to obtain the name and the password of the currently authenticated user:

Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
UserDetails principal = (UserDetails) authentication.getPrincipal();
String username = principal.getUsername();
String password = principal.getPassword();

Oracle XE'de HTTP Portu Nasıl Değiştirilir?

2009-04-06T14:19:00.007+03:00

Oracle XE, standart olarak 8080 no'lu HTTP portu olarak kullanır. Bu portu JBoss ve Tomcat de HTTP portu olarak kullandığı için, Oracle ile beraber bir application server çalıştırmak için, ya application server'in ya da Oracle'in HTTP portunun değiştirilmesi gerekiyor.

Oracle'de bu portu değiştirmek icin dbms_xdb.sethttpport() fonksiyonunu kullanabilirsiniz. Database'e system kullanıcısıyla giriş yaptıktan sonra aşağıdaki şekilde çalıştırabilirsiniz:

EXEC dbms_xdb.sethttpport(8090);

Intellij Knows How To "Extract Method"

2009-03-31T21:48:00.012+03:00

Intellij has a great refactoring feature called "Extract Method". You can convert a code piece into a method using this feature. In this process, Intellij can handle all method parameters and return values. You can use this feature first by selecting the code piece you wish to convert to method, and press CTRL+ALT+M.

I will explain what impressed me most about this feature using following example. In the following code, I am not comfortable with the first try/catch block and I want to hide this dirty code inside a method.

 1     public static void main(String[] args) {
 2         Connection conn = null;
 3
4         //I am not comfortable with following try/catch block
 5         try {
 6             Class.forName("com.mysql.jdbc.Driver");
 7         } catch (ClassNotFoundException e) {
 8             e.printStackTrace();
 9             System.out.println("Driver not found");
10             return;
11         }
12
13         try {
14             conn = DriverManager.getConnection(
15                     "jdbc:mysql://localhost/petshop", "root", "changeme");
16             Statement statement = conn.createStatement();
17         } catch (SQLException e) {
18             e.printStackTrace();
19         }
20     }
21

To achieve this, position the cursor over 5th line and press CTRL+W. By the way, this is another nice Intellij feature called "Incremental Select" :).

Then, press CTRL+ALT+M. Notice that, the return type of the method is boolean. Click OK and see what we'll get:

Following is the refactored version of our code. Let's see what happened. Intellij put the code inside a method which returns boolean and wrapped the method call inside an if statement. This was the only possible solution which wouldn't violate the flow of program:).

 1     public static void main(String[] args) {
 2         Connection conn = null;
 3
 4         //I am comfortable now
 5         if (lookupClass()) return;
 6
7         try {
 8             conn = DriverManager.getConnection(
 9                     "jdbc:mysql://localhost/petshop", "root", "changeme");
10             Statement statement = conn.createStatement();
11         } catch (SQLException e) {
12             e.printStackTrace();
13         }
14     }
15
16     private static boolean lookupClass() {
17         try {
18             Class.forName("com.mysql.jdbc.Driver");
19         } catch (ClassNotFoundException e) {
20             e.printStackTrace();
21             System.out.println("Driver not found");
22             return true;
23         }
24         return false;
25     }
26

The Easiest Java Tab Implementation With Close Button

2009-01-25T14:36:00.012+02:00

Unfortunately, the current implementation of JTabbedPane class in Swing API does not contain a close button. You have to implement this feature by yourself. Here, I have a simple JTabbedPane implementation with a close button. I used MetalIconFactory.InternalFrameCloseIcon class in the close button. Because this is a private inner class, you need to use MetalIconFactory.getInternalFrameCloseIcon(int iconSize). Check the following screenshots to see how a JTabbedPane and a CloseButtonTabbedPane looks like:

A tabbed pane with default JTabbedPane implementation, shows up as below:

A tabbed pane with CloseButtonTabbedPane implementation, shows up as below:

Click here to download the source code of CloseButtonTabbedPane here.

The advantages of this implementation is:

You don't need an image for close button. Instead you use an image provided by Java API.
Everything you need is packaged inside just 1 class.

How To Disable Corcurrent Logins in Spring-Security

2008-11-04T09:16:00.007+02:00

Add the following listener to your web.xml file to keep Spring Security updated about session lifecycle events:

<listener>
<listener-class> org.springframework.security.ui.session.HttpSessionEventPublisher </listener-class>
</listener>

Then add the following line to your application context file:

<http>
...
<concurrent-session-control max-sessions="1" />
</http>

This prevents concurrent logins. A second login will cause the first to be invalidated. To prevent a second login, use following configuration:

<http>
...
<concurrent-session-control max-sessions="1" exception-if-maximum-exceeded="true"/>
</http>

The second login will then be rejected.

Create XSL Document Using An Existing XML Document

2008-10-11T20:50:00.026+03:00

To create an xml schema document(XSL), you should know XSL specification. But, thank goodness, there is another time saving option. Intellij IDEA does the job for us, without any effort. Intellij IDEA is capable of generating XSL documents from existing XML files. Assuming that we have such an XML document as follows:

<table>
    <column>
        <name>Name</name>
        <type>String</type>
    </column>
    <column>
        <name>Surname</name>
        <type>String</type>
    </column>
    <column>
        <name>Birthday</name>
        <type>Date</type>
    </column>
</table>

Because we don't have an XSD file for our XML file, Intellij complains about this and cannot make syntax-highlighting. Let's resolve this issue. Go to Tools/Generate Xml Schema From Document menu option:

Then, change the filename to "xml-format.xsd" and change the value of "Detect enumerations limit" to any value less than 3. This is because, we have 3 column regions in the XML document and the values inside the column tags are not enumerations. If we don't change this value to something lower than 3, xsd generator will interpret the values inside the column tag as enumerations, and generate the xsd file based on this interpretation. So, change it to 1, for example. Then click OK.

You will get the following XSD document as a result:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="table" type="tableType"/>
<xs:complexType name="columnType">
<xs:sequence>
<xs:element type="xs:string" name="name"/>
<xs:element name="type">
<xs:simpleType>
  <xs:restriction base="xs:string">
    <xs:enumeration value="String"/>
    <xs:enumeration value="Date"/>
  </xs:restriction>
</xs:simpleType>
</xs:element>
</xs:sequence>
</xs:complexType>
<xs:complexType name="tableType">
<xs:sequence>
<xs:element type="columnType" name="column" maxOccurs="unbounded" minOccurs="0"/>
</xs:sequence>
</xs:complexType>
</xs:schema>

You can also change the format of the generated XSD document, using "Design Type" area in "Generate Schema From Instance Document" dialog box. There are 3 available choices:

But we are not done yet. We should tell our XML document the location of its schema document(XSD) which we just created before. Assuming that, our XML and XSD files are on the same path, change the first line of the XML as follows:

<table xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:noNamespaceSchemaLocation="xml-format.xsd">
    <column>
        <name>Namename>
        <type>Stringtype>
    column>
    <column>
        <name>Surnamename>
        <type>Stringtype>
    column>
    <column>
        <name>Birthdayname>
        <type>Datetype>
    column>
table>

Now, our xml editor is able to make syntax-highlighting, using the newly generated XSD file.

And now, Ctrl+Space works also. We may not write erronous XML files any more:).

NLS_DATE_FORMAT Kullanımı

2008-10-09T17:14:00.002+03:00

SQL> select sysdate from dual;

SYSDATE
----------
09/10/2008

SQL> alter session set nls_date_format = 'yyyy-mm-dd hh24:mi:ss';

Oturum değiştirildi.

SQL> select sysdate from dual;

SYSDATE
-------------------
2008-10-09 17:27:38

A Nice Maven Feature In Intellij 8

2008-09-30T22:13:00.008+03:00

There is a useful maven feature in Intellij 8. As you know, maven doesn't download the sources.jar files of the libraries into the local repository, by default. You can download the sources.jar files of the dependencies of the project by just one click of a button. First open the Maven view in Intellij. Then press the "Download artifacts" button from the toolbar:

Actually this feature also exists in Intellij IDEA v7 but I can't make it work. Probably, there is a bug. Please inform me, if there is anyone who can use the feature in version 7.

Intellij Knows Swing

2008-08-17T21:08:00.012+03:00

As I use Intellij more and more, I get more and more suprised, more and more excited.

Yesterday, I was trying to change the cursor in a swing project, using setCursor() method. I expected Cursor.W_RESIZE_CURSOR would return a java.awt.Cursor object and coded as below. But something was wrong with my code:

...And immediately, Intellij told me what was wrong with my code:). I should have called Cursor.getPreferredCursor(). I applied Intellij's suggestion, and the error was corrected. My intelligent IDE again saved me to search for example codes on the internet:

How To Sort Collections Using commons-beanutils?

2008-08-04T09:15:00.009+03:00

Hi everybody,

Following is another simple way of sorting collections using commons-beanutils package:

Assume that we have an object as below:

public class User {
private long userId;
private String  userName;
private String password;
}

And we want to sort based on userName field. We can use BeanComparator class of commons-beanutils package as below to sort the list:

ArrayList list = new ArrayList();

//...

//add User object inside the list.

//...

Collections.sort(list, new BeanComparator("userName"));

Notice that, we passed the name of the field to be sorted, as the parameter, to BeanComparator class constructor. We accomplished sorting of a collection using just one line of code:).

Download commons-beanutils from http://commons.apache.org/beanutils.

JBoss server'a IP numarası ile erişim

2008-07-28T18:17:00.000+03:00

Lokal makinemizde çalışan jboss'a http://localhost:8080 adresiyle erişebiliyoruz. Ama http://127.0.0.1:8080 adresiyle denediğimizde, şeklinde erişemeyiz. Bununla beraber uzaktaki bir istemci de ip numaramızı bilmesine rağmen erişim problemi yaşayacaktır. IP numarası ile erişimi aktive etmek için Jboss'u "-b" parametresiyle başlatmamız gerekmektedir. Bu durumda kullanacağımız komut aşağıdaki gibi olacaktır.

> run.bat -b 0.0.0.0

JBoss'u baska bir domain ile başlatmak

2008-07-27T13:34:00.003+03:00

Standart Jboss kurulumu "default" adli server instance'ı başlatmaktadır. Başka bir server instance'i başlatmak için "-c" parametresini kullanmalıyız. Örneğin standart kurulumda gelen, "minimal" adli server'ı başlatmak için aşağıdaki komutu kullanmalıyız:

> run.bat -c minimal

JSTL Reference

2008-06-21T21:08:00.004+03:00

Following document is a good resource about JSTL for java web developers.

http://www.manning-source.com/books/bayern/bayern_apxA.pdf

This document can also be found in Shawn Bayern's book JSTL In Action.

Javascript ile TEXTAREA'ya metin eklemek

2008-05-22T09:40:00.000+03:00

Javascript kullanarak, bir HTML sayfasındaki TEXTAREA'da cursor'un bulunduğu yere nasıl text eklendiğini bulmak için yaklaşık 1 saat araştırdım. Basit gibi görünen bu işlemi, en sonunda, Alex King'in blogunda buldum. Yazıya, http://alexking.org/blog/2003/06/02/inserting-at-the-cursor-using-javascript adresinden inceleyebilirsiniz. İlginçtir ki, Alex King de bu fonksiyona PhpMyAdmin'de raslamış.

PHP Cheat Sheet

2008-05-21T19:48:00.000+03:00

Mysql Cheat Sheat

2008-05-20T19:46:00.000+03:00

Apache mod_rewrite Cheat Sheet

2008-05-19T19:44:00.000+03:00

Javascript Cheat Sheet

2008-05-18T19:42:00.000+03:00

CSS Cheat Sheet

2008-05-17T13:59:00.003+03:00

İş Görüşmesine Katılacaklara Taktikler

2008-05-01T15:42:00.001+03:00

Aşağıda, katılmış olduğum iş görüşmelerinde sıkça karşılaştığım soruları ve tavsiyelerimi yayınlıyorum.

Soru: Şirketimize katkıda bulunabileceğinizi düşünüyor musunuz?
Cevap: Düşünmeseydim buraya gelmezdim.

Soru: Bize kısaca kendinizden bahseder misiniz?
Cevap: Sadece iyi yönlerinizden bahsetmeyin. Hem iyi yönlerinizden hem de kötü yönlerinizden bahsetmeniz uygun olur. Motivasyonumu çabuk kaybederim, çabuk sinirlenirim, takıntılarım vardır gibi şeyler söylemeyin:). Eğer gerçekten bu tür problemleriniz varsa da, "Kişisel Gelişim" konulu yayınlardan faydalanabilirsiniz.

Soru: Geleceğe dair hedeflerin nelerdir?
Cevap: Bu soruyu cevaplamak size kalmış:). Böyle bir soruya karşı hazırlıklı olun.

Ayrım yapmadan bütün teknoloji şirketlerine cv'nizi gönderdiniz. Aşağıdaki soruya karşı hazırlıklı olmalısınız:
Soru: Neden bizim şirketimizi tercih ettiniz?
Cevap: Bütün teknoloji şirketlerine cv'mi yolladım. Sizin bir özelliğiniz yok pek tercih edilecek bir cevap değil.

Javascript İle Gizleme/Gösterme

2008-04-26T16:37:00.008+03:00

HTML sayfamızdaki herhangi bir alanın gizlenmesi ya da görünür hale gelmesini displayözelliğini kullanarak yapabiliriz.
Alanın gizlenmesi için bu özelliğin değerini display: none şeklinde değiştirmeliyiz.
Gizli bir alanın görünür hale gelmesi için bu özelliğin değerini display: block şeklinde değiştirmeliyiz.

Aşağıdaki örnekte new_artist_region alanı görünmezdir:

<span id="new_artist_region" style="display: none;">
<input name="new_artist" type="text">
</span>

Aşağıdaki örnekte ise new_artist_region alanı görünür durumdadır:

<span id="new_artist_region" style="display: block;">
<input name="new_artist" type="text">
</span>

Aşağıda ise, javascript kullanarak bir alanın nasıl görünür/görünmez hale geldiğini görüyoruz:

<script language="Javascript">
function showhide(area_id){
var area = document.getElementById(area_id);
if (area.style.display == "block") area.style.display = "none";
else if (area.style.display == "none") area.style.display = "block";
}
</script>
<input type="checkbox" name="new_artist" onclick="showhide('new_artist')">New Artist
<span id="new_artist" style="display: none">
<input type="text" name="new_artist">
</span>

How To Export Query Results In Mysql

2008-04-25T11:28:00.000+03:00

Use "INTO OUTFILE" directive in your queries to export data from mysql into a text file.

mysql> select * from videos order by artist INTO OUTFILE "c:\videos.csv"
Query OK, 3269 rows affected (0.05 sec)

Use "FIELDS TERMINATED BY" directive to determine delimiter between fields.

mysql> select * from videos order by artist INTO OUTFILE "c:\videos.csv" FIELDS TERMINATED BY "|";
Query OK, 3269 rows affected (0.06 sec)

If you do not specify absolute path in "INTO OUTFILE" directive, the file will be recorded in current database's path. For example, assume that mysql is installed in "D:\dev\mysql" and the current database is "video_db"; then the path of videos.csv would be "D:\dev\mysql\data\video_db".

How To Change MySql Root Password

2008-04-24T00:25:00.000+03:00

In this example, I am going to change mysql root account's password from 1234 to 123456 using SQL. The queries are so self-explanatory. So, there is no need to describe them.

D:\dev\xampp\mysql\bin>mysql -u root -p
Enter password: ****
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.0.51a Source distribution

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> use mysql;
Database changed
mysql> update user set password=PASSWORD("123456") where User="root";
Query OK, 2 rows affected (0.03 sec)
Rows matched: 2 Changed: 2 Warnings: 0

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql> quit
Bye

D:\dev\xampp\mysql\bin>mysql -u root -p
Enter password: ******
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.0.51a Source distribution

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql>

Some Mysql-Specific Commands

2008-04-14T13:18:00.001+03:00

Following is a list of some of mysql specific commands that I frequently use. You should be connected to mysql server through the command-line to execute the commands.

>show databases;
Display the list of databases hosted by the mysql server

>use db;
Selects the database to be working on.

>desc table;
Describes the metadata of the table;

>show tables;
Display tables of the selected database

>source test.sql;
execute an SQL script file

How To Kill A Process In Windows: TASKKILL

2008-04-08T17:12:00.012+03:00

What is taskkill?

To kill a process in Windows using command-line use TASKKILL command.

If you know the name of the process use /im switch. Following command terminates Windows Media Player:

taskkill /im wmplayer.exe

If you know the process id, use /pid switch. Following command terminates the process identified by PID=1545:

taskkill /pid 1545

If you want to kill the parent process and its child processes, namely tree-kill, use /t switch. Following command terminates the process identified by PID=1545:

taskkill /t /pid 1545

If you want to force the process to be terminated, use /f switch. Following command terminates the process forcefully:

taskkill /f /pid 1545

Why Doesn't PrintWriter Work?

2008-04-05T22:23:00.010+03:00

Even though you may call method PrintWriter.println(), you may not get any output. This is because PrintWriter is auto-flush off by default. Check the code below:

 1 public class Test {
 2     public static void main(String[] args) {
 3         OutputStream out1 = System.out;
 4         PrintWriter out = new PrintWriter(out1);
 5         out.println("hello");
 6         System.out.println("text is about to be flushed.");
 7         out.flush();
 8     }
 9 }

The output is as follows:

text is about to be flushed.
hello

To enable auto-flush, you must initialize PrintWriter as follows:

PrintWriter out = new PrintWriter(out1, true);

Java Tabanlı Oyun Motorları

2008-03-26T18:18:00.017+02:00

Bu aralar bol bol boş vaktim var. Ben de, çok merak edip de şimdiye kadar ilgilenemediğim, değişik değişik konularla zamanımı değerlendiriyorum. Şu anda java tabanlı açık kaynak kodlu oyun motorlarını araştırıyorum. Bir yandan da OpenGL ve DirectX'i araştırıyorum. Google'da "java game engine" araması sonucu bulduğum bazı sonuçları aşağıda yayınlıyorum.

Java Monkey Engine:
http://www.jmonkeyengine.com/

EasyWay:
http://easyway.sourceforge.net/joomla/index.php
Adı üstünde kullanımı ve öğrenimi kolay bir oyun motoru. Şimdilik sadece 2 boyutlu oyunlar yapılabiliyor. 3 boyut desteği yok. Tam ekran ve pencere desteği var. Applet desteği sıradaki versiyonla beraber geliyor. Bir an önce oyun programlamaya başlamak istiyorum diyorsanız, seçiminiz bu olsun. Sitedeki tutorial'leri okuduktan sonra kendi oyununuzu yazmaya başlayabilirsiniz.

OctLight:
https://jge.dev.java.net/
OctLight öncelikle online oyun geliştirilmesi amacıyla tasarlanmış. Fakat normal oyunlar da geliştirilebiliyor. Proje'nin şimdilik çok eksiği var. Yaklaşık bir senedir güncelleme görmemiş.

Golden T Game Engine:
http://goldenstudios.or.id/products/GTGE/
GTGE ile de 2 boyutlu oyunlar hazırlanabiliyor. Tam ekran, pencere ve applet desteği var. Sitesinde onlarca örnek oyunu kaynak koduyla beraber indirebilirsiniz. Bu proje, EasyWay'den daha aktif bir proje. Sadece forumlarında bile, EasyWay'den çok daha fazla post mevcut.

JGame:
http://www.13thmonkey.org/~boris/jgame/

Şimdilik hangisi daha kullanışlı ben de bilmiyorum. Zaman içinde bu gönderiyi güncelleyeceğim.

Online JavaOne Seminerleri

2008-03-23T12:17:00.003+02:00

Aşağıdaki adresten, şimdiye kadar yapılmış olan JavaOne seminerlerini izleyebilir ve sunum dosyalarını indirebilirsiniz.

http://developers.sun.com/learning/javaoneonline/index.jsp

Sitede, aklınıza gelebilecek her türlü konuda görsel, işitsel içerik mevcut:).

ServletContext ile ServletConfig Arasındaki Fark

2008-03-20T12:12:00.026+02:00

ServletContext, uygulamaya ait parametrelere erişmek için kullanılır. 1 uygulamada, 1 ServletContext objesi bulunur. Bu parametreler, web.xml dosyasında, aşağıdaki gibi saklanır:

<context-param>
   <param-name>logfile_path</param-name>
   <param-value>\logs\log.txt</param-value>
</context-param>

ServletConfig, ait olduğu servlet'e ait parametreleri barındırır. Uygulama içindeki her servlet'in 1 ServletConfig objesi vardır. Bu parametreler, web.xml'de aşağıdaki gibi saklanır.

<servlet>
   <servlet-name>myServlet</servlet-name>
   <servlet-class>MyServlet</servlet-class>
   <init-param>
       <param-name>About the Servlet</param-name>
       <param-value>This is my servlet.</param-value>
   </init-param>
</servlet>

Halil'in Dönüşü

2008-03-15T22:46:00.005+02:00

Evet arkadaşlar, Nisan 2007'de başladığım askerlik vazifemi bugün itibariyle bitirdim:). Darısı askerliğini henüz yapmamış arkadaşlarımız başına:)

My First Intellij Plugin: Classpath Complete

2006-11-02T01:25:00.005+02:00

I have just released my first open-source Intellij plugin. The plugin is hosted in Intellij's web site: http://plugins.intellij.net/plugin/?id=1214. This is an alpha release. There are a couple of missing features that I am planning to implement soon.

The source code can be downloaded here.

What the plugin does:

There are plenty of jar files around that a java developer should be aware of. Sometimes, we need some classes but we may not know which jar files contain these classes. In the build process, if the jar files does not exist in the classpath of java projects, the compiler throws "cannot resolve symbol" errors for classes which cannot be found in the classpath. My plugin comes into play in this situation. The plugin finds all the jar files on all of the drives of the computer. Then it finds the classes inside the jar files. The information is saved in Intellij IDEA's configuration file. This process needs to be done only once. After the plugin is initialized, you can search the missing classes using a dialog box, to find which jar file contains the class and later add the jar to the project's classpath.