Java Introduction Tutorial

Introduction To Java Tutorial:

(A) The Java Programming Language:

The java programming language is similar to C++ but leaves out all the complexities that can break operating systems such as unsafe pointer and memory issues. In Java you can create classes and reuse these classes and unused memory is automatically reclaimed.

(B) The Java Virtual Machine

The JVM is the foundation of the platform, the JVM interprets and executes Java bytecode.

(C) The Java API.

As mentioned above java comes bundled with a large library of ready made classes and objects and support almost everything a developer would want to do in java.

Downloading & Installing the Java Development Kit (J2SE)

In this lesson we will be navigating to http://java.sun.com/javase/downloads/index.jsp and downloading version 6(i recomment to get the latest version) of the Java SE Development Kit (JDK).

The JDK includes the Java Runtime Environment (JRE) and command-line development tools that are useful for developing applets and applications - Click Next below to start the demonstration.

(1) Click on the >>Download image beside your JDK i.e. in our case beside text JDK6 (if higher one available take this).

(2) You will be prompted with a security dialog (This page contains both secure and non secure items) Select Yes.

(3) First you need check the box marked accept license agreement.

(4) Identify which platform suit you (we will be using windows) then mark the checkbox beside text Windows Offline Installation, Multi-language or which ever platform you are using.

(5) Then Right click on the link Windows Offline Installation, Multi-language and select save as.

(6) A File download Dialog pops up, select save and save it to your c: drive. this executable is large enough and will take a little while to download. So Please wait until the installation finishes.

(7) Open windows explorer, Navigate to C: drive. Select the File you just downloaded. Double click on this file.

The installation of the software will begin.