Welcome to the Core Java Repository! This repository is a comprehensive guide to Core Java, covering a wide range of topics essential for Java developers. Whether you are a beginner or an experienced developer, this repository aims to provide valuable resources, examples, and explanations to enhance your understanding of Core Java concepts.
- Introduction
- Getting Started
- Basic Concepts
- Object-Oriented Programming (OOP)
- Exception Handling
- Collections Framework
- Multithreading
- File I/O
- Java Database Connectivity (JDBC)
- Java Standard Edition (SE) APIs
- Advanced Topics
- Best Practices
- Sample Programs
- Contributing
- License
Core Java is the foundation of Java programming. It includes the basic concepts of the Java language, object-oriented programming, exception handling, and various APIs provided by Java Standard Edition (SE). This repository serves as a guide to mastering Core Java concepts.
In Java, a variable is a container that holds data. There are different types of variables, including primitive types and reference types.
Java supports various data types such as int, float, double, char, boolean, etc. Understanding data types is crucial for variable declaration and manipulation.
Operators are symbols used to perform operations on variables and values. Examples include arithmetic, comparison, and logical operators.
Control flow statements, such as if, switch, for, while, and do-while, control the flow of execution in a Java program.
Classes are the blueprint for objects, and objects are instances of classes. Learn about class and object creation, constructors, and methods.
Inheritance is a key OOP concept that allows a class to inherit properties and behaviors from another class. Explore single and multiple inheritance.
Polymorphism allows objects to be treated as instances of their parent class. Learn about method overloading and overriding.
Encapsulation is the bundling of data and methods that operate on the data within a single unit, or class.
Abstraction involves hiding the implementation details and exposing only the necessary features of an object.
Exception handling in Java helps manage runtime errors gracefully. Learn about try-catch blocks, throw, throws, and finally.
Lists are dynamic arrays that store elements in a specific order. Explore ArrayList, LinkedList, and Vector.
Sets store unique elements and do not allow duplicates. Learn about HashSet, LinkedHashSet, and TreeSet.
Maps store key-value pairs. Explore HashMap, TreeMap, and LinkedHashMap.
Iterators provide a way to traverse through collections. Learn about Iterator and ListIterator.
Creating threads allows concurrent execution of tasks. Learn about extending the Thread class and implementing the Runnable interface.
Synchronization ensures that only one thread accesses shared resources at a time. Learn about synchronized methods and blocks.
Concurrency involves executing multiple threads simultaneously. Learn about Executor framework and Callable.
File I/O operations include reading from and writing to files. Learn about FileReader, FileWriter, BufferedReader, and BufferedWriter.
Serialization is the process of converting objects into a byte stream. Learn about Serializable interface and ObjectInputStream, ObjectOutputStream.
Connecting to a database involves establishing a connection using DriverManager and Connection.
Executing SQL queries involves creating statements, result sets, and handling transactions.
The java.util package provides utility classes and data structures like ArrayList, HashMap, and Date.
The java.lang package contains fundamental classes and provides support for threads, strings, exceptions, and more.
The java.io package provides classes for reading and writing to files, streams, and serialization.
Lambda expressions enable functional programming in Java. Learn about the syntax and usage of lambdas.
The Streams API facilitates functional-style operations on streams of elements. Learn about map, filter, reduce, and collect operations.
JavaFX is a platform for creating desktop applications. Learn about building graphical user interfaces (GUI) using JavaFX.
Explore new features introduced in Java 9 and later versions, including module system, private methods in interfaces, and more.
Adopting best practices ensures clean, maintainable, and efficient code. Learn about naming conventions, code organization, and design principles.
Explore a collection of sample programs covering various Core Java concepts. These programs serve as practical examples to reinforce your understanding.
Contributions to this repository are welcome! If you have additional topics, examples, or improvements, feel free to open an issue or create a pull request.
This Core Java Repository is open-source and available under the MIT License.
