Master Core & Advanced Java

If-Else: This is a decision-making control system. If the condition is right then one block is executed, and if wrong then the else block is executed.

Switch Case: Decision-making system executed by selecting one condition from multiple choices.

For Loop: Looping statement used to execute code repeatedly for a fixed number of times.

While Loop: Executes a code block repeatedly as long as the given condition remains true.

Do-While Loop: Looping statement that executes the code block at least once before evaluating the condition.

Class & Object: Class and Object form the core fundamental concepts of Object-Oriented Programming in Java.

Inheritance: Used to inherit the properties and methods of one class into another class.

Polymorphism: Means "many forms" — allows one method or object to perform tasks in different ways.

Encapsulation: Wrapping data variables and methods inside a single unit class and protecting data from direct external access.

Abstraction: Showing only essential information while hiding unnecessary internal implementation details.

Single Dimensional Array: A data structure that stores multiple variables of the same data type sequentially.

Multi-Dimensional Array: An array structure in which another array is stored inside (matrix form).

String Handling: Creating, storing, and manipulating groups of text characters efficiently in Java.

StringBuilder: A special Java class used to modify and mutate strings dynamically and efficiently.

Try: Used to enclose code where an exceptional runtime error might occur.

Catch: Handles the specific error or exception that occurs within the try block.

Finally: Always executes code regardless of whether an exception is caught or thrown.

Throw: Used to manually generate and throw an exception object in Java.

Throws: Declares exceptions that a method might throw during execution.

ArrayList: Provides a dynamic, resizable array implementation.

LinkedList: Uses a doubly linked list structure to store elements efficiently.

HashMap: Stores elements in the form of key-value pairs.

HashSet: A collection class that stores unique elements without duplicates.

TreeMap: Key-value pair storage that maintains elements in a sorted order.

Multithreading: A feature of Java allowing multiple thread tasks to execute simultaneously during program execution.

File Reading: Reading stored data from an existing file system for use in the program.

File Writing: Writing or saving program data back to permanent disk files.

Data Storage: Storing data systematically to access and retrieve when required in the future.

JDBC (Java Database Connectivity): Connects Java programs to relational databases for Database Connection, Data Insert, Update, Delete, and Query Execution.

Servlets: Used for server-side web programming offering fast processing, dynamic content generation, and superior performance.

JSP (JavaServer Pages): Technology used to easily build dynamic web pages and user interfaces.

Hibernate Framework: Simplifies database operations through ORM, enabling faster development, cleaner code, and high performance.