Hashtable and Usage

Now, let's look at Hashtable class of util pakage.

Hashtable extends Dictionary class and implements Map, Cloneable, Serializable.

Constructors:
* public Hashtable(int initialCapacity, float loadFactor)
* public Hashtable(int initialCapacity)
* public Hashtable()
* public Hashtable(Map t)

Subclasses:
* Properties
* UIDefaults

To see usage of Hashtable class, please read this article.

Shortly, it is about how to put objects to hashtable instance with unique keyword. The keyword is need for retrieving the object.

Set, Iterator, Enumeration were specified at the article in order to reach elements of hashtable.

Org Packages

Sub packages of Org package:

* org.ietf
* org.omg
* org.w3c
* org.xml

Javax Packages

Sub packages of Javax package:

* javax.accessibility
* javax.activation
* javax.activity
* javax.annotation
* javax.crypto
* javax.imageio
* javax.jws
* javax.lang
* javax.management
* javax.naming
* javax.net
* javax.print
* javax.rmi
* javax.script
* javax.security
* javax.sound
* javax.sql
* javax.swing
* javax.tools
* javax.transaction
* javax.xml

Java Packages

JSE Java packages:

* java.applet
* java.awt
* java.beans
* java.io
* java.lang
* java.math
* java.net
* java.nio
* java.rmi
* java.security
* java.sql
* java.text
* java.util

Classes and Methods

www.kodcu.net shows classes and theirs methods.

* java.kodcu.net
* javax.kodcu.net
* org.kodcu.net

Java Integrated Development Environments

IDEs for Java programming is here:

Free IDEs:

* Eclipse Foundation's Eclipse,
* Sun Microsystems' NetBeans,
* Oracle'a ait JDeveloper,
* JavaPLT group at Rice University's DrJava Java IDE,
* Michael Kölling's BlueJ Java IDE,
* Xinox Software's JCreator Java IDE LE (Lite Edition)
* JIPE Java IDE,
* Gel.


Paid IDEs:

* Borland's JBuilder,
* JetBrains's IntelliJ IDEA,
* Xinox Software's JCreator Java IDE Pro Edition.

We can say that NetBeans is a IDE of Oracle company. Because Sun was acquired by Oracle.

Let us look at mostly used IDEs:
* NetBeans,
* Eclipse,
* JBuilder,
* JDeveloper,
* IntelliJ IDEA,
* and for basic programming JCreator.

Sun was acquired by Oracle for $7.4b

Sun Microsystems was acquired by Oracle company for $7.4 billion. All expectations were for IBM company, but Oracle was suprised every firms for purchasing and acquiring.

Let's look at Oracle's employer counts: As of 2007, Sun employed 1750, Oracle employed 850 workers in Massachusetts. With acquiring Oracle reaches 2600 employers. So we can say that Oracle is new computing/IT giant capable of challenging industry leader.

Java Terms

You can also reach the terms from here.

J2EE: Java 2 Platform, Enterprise Edition
J2ME: Java 2 Platform, Micro Edition
J2SE: Java 2 Platform, Standard Edition
SDK: Software Development Kit
JDK: Java Development Kit
JVM: Java Virtual Machine
KVM: Kilobyte Virtual Machine
CVM: Compact Virtual Machine
JRE: Java Runtime Environment
JAR: Java Archive
CLC: Connected Device Configuration
CLDC: Connected Limited Device Configuration
JSDK: Java Servlet Development Kit
JDBC: Java Database Connectivity
JFC: Java Foundation Classes
JIT: Just-In-Time Compiler
JNDI: Java Naming and Directory Interface
JNI: Java Native Interface
JAIN: Java APIs for Integrated Networks
RMI: Java Remote Method Invocation

Let's look at differences:

* J2SE SDK is a JDK. So JDK contains SDK.
* J2ME platform is for mobile and micro devices, J2EE platform is for enterprise applications like server side process, and J2SE platform is for standard applications.
* CDC and CLDC are configurations of J2ME platform. CDC is for 2MB and more memory and CLDC is for 2MB and less memory.
* CVM is for CDC and KVM is for CLDC. CVM and KVM are JVM.

Welcome J2SE Platform Web Site

Welcome to my blog, javastandardedition.blogspot.com, that gives information about java standard platform and J2SE technology.

We will find out this techonology of java and we will indicate integrated development environment (IDE) for this programming language.

We will mostly indicate classes and methods of this platform.