Java Programming

Introduction to Java

Java is a high-level, class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible. It is a general-purpose programming language intended to let application developers write once, run anywhere (WORA), meaning that compiled Java code can run on all platforms that support Java without the need for recompilation.

Topics Covered

• Basic Syntax
• OOP Concepts
• Exception Handling
• File I/O
• Multithreading
• Collections
• Java 8 Features
• Awt features

Basic Syntax

The syntax of Java is largely influenced by C++. Here are some key concepts:

• Classes and Objects
• Methods
• Variables
• Data Types
• Operators
• Control Statements

OOP Concepts

Java is an object-oriented programming language. Here are the four main OOP concepts:

• Inheritance
• Polymorphism
• Encapsulation
• Abstraction

Exception Handling

Exception handling is a powerful mechanism that handles runtime errors to maintain normal application flow. Here are some key concepts:

• Try, Catch, and Finally
• Throw and Throws
• Custom Exceptions

File I/O

File I/O in Java allows for reading and writing files. Here are some key concepts:

• FileReader and FileWriter
• BufferedReader and BufferedWriter
• Serialization

Multithreading

Multithreading in Java is a process of executing multiple threads simultaneously. Here are some key concepts:

• Thread Class
• Runnable Interface
• Synchronization

Collections

Java Collections Framework provides architecture to store and manipulate a group of objects. Here are some key concepts:

• List, Set, and Map
• ArrayList and LinkedList
• HashSet and TreeSet
• HashMap and TreeMap

Java 8 Features

Java 8 introduced significant enhancements and new features. Here are some key features:

• Lambda Expressions
• Stream API
• Functional Interfaces
• Default Methods