Core Java
Download as PPTX, PDF•1 like•2,234 views
This document provides an introduction and overview of the Java programming language. It discusses that Java was developed by James Gosling in 1990 at Sun Microsystems to be a simple, secure, object-oriented language for developing applications on the internet. The document then covers Java's history, key features like platform independence and object orientation, and how Java programs are executed using the Java Virtual Machine. It also summarizes the different modules of Java - JSE, JEE, and JME - and provides a basic example Java program.
![An Example:
class First
{
int a=10;
Public static void main(String[] args)
{
System.out.println(“Welcome to JAVA”+a);
}
}](https://image.slidesharecdn.com/java-150611100458-lva1-app6892/85/Core-Java-13-320.jpg)
Core Java
- 1. Submitted To: Department of Computer Science RIMT-Institute of Engineering & Technology Mandi-Gobindgarh Punjab( India) Developed By: Shashi Kr. Singh (1150986)
- 2. Introduction to Java: Java is programming language. It is mainly designed to develop internet application by providing platform independency Java is very simple, high-level, secured ,multithreaded , object- oriented programming language It was developed by James Gosling in Sun microsystem in 1990’s for developing internet application Its first version released in 23 January 1995
- 3. History of java 1990 Sun Microsystems decided to develop special software that could be used to manipulate consumer electronic devices. A team of Sun Microsystems programmers headed by James Gosling was formed to undertake this task. 1991 After exploring the possibility of most Object Oriented Programming Language C++, the team announced a new language named “Oak”. 1992 The team , known as a Green Project team by Sun 1994 The team developed a web browser called “Hot Java” to locate and run applet programs on Internet. 1995 Oak was named “Java”, due to some legal issue. Java is just a name and is not an acronym. 1996 Java established itself not only a leader for Internet Programming but also as a general-purpose, object oriented programming language.
- 5. JVM,JDK & JRE JVM-Java Virtual Machine is a software that execute java byte codes by converting byte codes into machine language of current operating system’s understanding format. Java software is divided into two type JDK-Java Development Kit has both compiler and JVM So using JDK we can develop, compile and execute new java application JRE-Java Runtime Environment has only JVM. Hence using JRE We can only execute already developed applications. Diagram: Java Software JDK JRE JVMCompiler + JRE JDK JVM JRE
- 6. Modules of Java: Since java can be used to developed all kinds of software application. so It is called as programming suite Java can be divided into three modules there are : JSE –java standard edition JEE –java enterprise edition JME –java mobile/micro edition
- 7. JSE JSE means java standard edition It is installable software as JDK software Latest version is JDK8.0 This module is given to develop standalone application, desktop etc. The application that specific to one computer and contain main() method is called standalone application Standalone application that contains GUI is called as desktop application
- 8. JEE JEE means java Enterprise edition It is not installable software JEE specification contain rules guidelines to develop webserver and application server software like weblogic,Tomcat server Using this we can be developed i) Web Application(websites) ii) Distributed Application iii) N-tier Application
- 9. JME JME means java mobile/micro edition For JME module, JSE module is base module It is installable software To develop mobile application and micro application in java environment like mobile games ,sim cards etc
- 10. Process
- 11. Principal of OOPs : Object Oriented Programming (OOP) attempts to emulate the real world in software systems. The real world consists of objects, categorized in classes. In Object Oriented Programming, classes have attributes, represented by data member. Feature of Object Oriented Programming Class & object Information Encapsulation(Hiding) Abstraction Inheritance Polymorphism
- 12. Where Java is mostly used:
- 13. An Example: class First { int a=10; Public static void main(String[] args) { System.out.println(“Welcome to JAVA”+a); } }
- 14. System Requirements: Basic programming knowledge