Introduction to java programming.

Introduction to java programming. 

Introduction

 About JAVA

 “Java refers to a number of computer software products and specifications from Sun Microsystems

 (the Java™ technology) that together provide a system for developing and deploying cross-platform

 applications. Java is used in a wide variety of computing platforms spanning from embedded devices

 and mobile phones on the low end to enterprise servers and super computers on the high end. Java

 is fairly ubiquitous in mobile phones, Web servers and enterprise applications, and somewhat less

 common in desktop applications, though users may have come across Java applets when browsing

 the Web.

 Writing in the Java programming language is the primary way to produce code that will be deployed

 as Java bytecode, though there are compilers available for other languages such as JavaScript,

 Python and Ruby, and a native Java scripting language called Groovy. Java syntax borrows heavily

 from C and C++ but it eliminates certain low-level constructs such as pointers and has a very simple

 memory model where every object is allocated on the heap and all variables of object types are

 references. Memory management is handled through integrated automatic garbage collection

 performed by the Java Virtual Machine (JVM).”

 1

 OOP – Object Oriented Programming

 OOP is a particular style of programming which involves a particular way of designing solutions to

 particular problems. Most modern programming languages, including Java, support this paradigm.

 When speaking about OOP one has to mention:

  Inheritance

  Modularity

  Polymorphism

  Encapsulation (binding code and its data)

 However at this point it is too early to try to fully understand these concepts.

 This guide is divided into two major sections, the first section is an introduction to the language and

 illustrates various examples of code while the second part goes into more detail.