- Java Tutorial
- Java Introduction
- Java Features
- Java Simple Program
- JVM, JDK and JRE
- Java Syntax
- Java Comments
- Java Keywords
- Java Variables
- Java Literals
- Java Separators
- Java Datatypes
- Java Operators
- Java Statements
- Java Strings
- Java Arrays
- Control Statement
- Java If
- Java If-else
- Java If-else-if
- Java Nested If
- Java Switch
- Iteration Statement
- Java For Loop
- Java For Each Loop
- Java While Loop
- Java Do While Loop
- Java Nested Loop
- Java Break/Continue
- Java Methods
- Java Methods
- Java Method Parameters
- Java Method Overloading
- Java Recursion
- Java OOPS
- Java OOPs
- Java Classes/Objects
- Java Inheritance
- Java Polymorphism
- Java Encapsulation
- Java Abstraction
- Java Modifiers
- Java Constructors
- Java Interface
- Java static keyword
- Java this keyword
- Java File Handling
- Java File
- Java Create File
- Java Read/Write File
- Java Delete File
- Java Program To
- Add Two Numbers
- Even or Odd Numbers
- Reverse a String
- Swap Two Numbers
- Prime Number
- Fibonacci Sequence
- Palindrome Strings
- Java Reference
- Java String Methods
- Java Math Methods
Java Introduction
Java, introduced in 1995 and owned by Oracle,
It is a versatile and widely-used programming language found on over 3 billion devices.
It's a go-to choice for various applications, from mobile and desktop to web development and gaming.
Why Java?
- Cross-Platform: Java runs seamlessly on different operating systems.
- Popularity: It's among the most widely used languages globally.
- Job Market: High demand for Java developers in today's job market.
- Ease of Learning: Known for its simplicity, making it beginner-friendly.
- Open-Source: Collaboration-friendly and cost-effective.
- Security & Speed: Robust security features with fast execution.
- Community Support: Boasts a massive and active developer community.
- Object-Oriented: Clear program structure and code reusability.
- Similarity to Others: Easy transition for C++ and C# programmers.
History:
Developed by James Gosling and his team at Sun Microsystems, Java aimed to create a language suitable for consumer electronic devices.
Key Features:
- Platform Independence: Java programs can run on any device with a Java Virtual Machine (JVM).
- Object-Oriented: Emphasizes the use of objects and classes for modular and reusable code.
- Simple Syntax: Derived from C and C++, making it easy to learn and use.
- Automatic Memory Management: Incorporates garbage collection for automatic memory management.
- Rich Standard Library: Includes an extensive Java API for various programming tasks.
- Security: Built-in features like sandboxing and bytecode verification enhance security.
- Development Tools: Java development is typically done using IDEs like Eclipse or IntelliJ IDEA.
- Getting Started: To start programming in Java, you need to install the Java Development Kit (JDK) and a text editor.
- Sample Code:
public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello, World!");
}
}Summary
Java is a versatile programming language known for its platform independence, object-oriented nature, and extensive ecosystem. It's widely used in web development, mobile app development, and enterprise software.