Java Servlet | JSP | part 5 | Database operations

Java is a programming language and platform , it is high level language and also object oriented,
It was developed by James Gosling from sun microsystems in 1995

Paltform: Any software or hardware environment in which program runs. It does not require any thing from the operating system it is also individual platform
Highlevel: any language which wordings are near to natural language, means easy to understand .
Object Oriented : object oriented is something like collection of rules and regulations that can be followed by any of programming language like Python Java ,C# we use oop concepts for reusability of code. In oop we can not access of fetch data unless making the object.

Why java ?
Because it has been tested refined extended and proven by a dedicated community of java developers architects and enthusiasts
Because
Simple Grammer
Portability
Garbage collection
Speed
Huge library
Why java was created?
Java was created with five main goals
• It should be object oriented
• A single representation of program code be executed on multiple operating system (Write once run anywhere)
• It should be fully support network programming
• It should be easy to use.

Java is divided in to three categories
J2SE (java 2 Standard Edition ) //Desktop based applications
J2EE ( Java 2 Enterprise Edition) //Web based applications
J2ME (Java 2 Micro or Mobile Edition) // Android applications

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