Learn Java Programming from Basic to Advanced

Learn how Java serves as a platform-independent programming language, with source files saved as .java and compiled to .class bytecode by the Java compiler for the Java Virtual Machine.

Identify the four Java application types—standalone desktop apps, web applications, enterprise solutions, and mobile apps—and note swing for desktop and servlets, JSP, Struts, JSF for web apps.

A keyword is a reserved word with a specific meaning that tells the compiler and cannot be used as a class or method name.

Explore Java variables, including how to declare with an example and assign values. Distinguish instance variables (non-static fields) from class variables (static fields) and review local and global variables.

Explore Java data types, including simple types (integer, float, character, boolean), derived types (arrays, strings), and user defined types (class, interface), with memory sizes and min and max values.

Learn how Java comment lines work, including single-line, multi-line, and documentation comments, with examples like the addition of A and B. Then explore how operators are used alongside these comments.

Learn the eight types of operators in Java, including arithmetic, relational, logical, assignment, increment/decrement, and conditional operators, plus bitwise, instanceof, and dot operators, with syntax and meaning.

Explore Java control flow statements for decision making, including if, if else, else if ladder, switch, and loops. Learn to handle conditions and invalid inputs with else and break.

Explore java object oriented programming as a paradigm using classes and objects. Understand key concepts like inheritance, interface, polymorphism, abstraction, encapsulation, and data abstraction, plus method overloading and overriding.

Explore Java classes and objects, detailing the class keyword, class name, and main method. Demonstrate object creation, method calls via object names, and printing variables with System.out.print.

Practice Java basics with programs for odd/even, grades, nested if, switch case, Fibonacci series, multiplication tables, factorials, and Armstrong numbers.

Learn Java access specifiers: public, private, protected, and default, and how they define boundary and scope for classes, methods, and variables across classes and subclasses.

Explore method overloading in Java by creating overloaded add methods with different parameter types, including integers and strings, and converting strings to integers for printing results.

Explore method overriding in Java by extending a base class with a derived class that redefines the run method, showing which implementation executes when you call run on an object.

Learn how Java constructors initialize objects, including default, parameterized, copy, and constructor overloading. Discover rules such as name matching the class, no return type, and non-static and non-private behavior.

Explore how Java packages group classes and interfaces, how the import keyword brings in a package, and how interfaces declare methods, as shown by the hello interface example.

Learn how arrays in Java store homogeneous data, with single dimensional and multi dimensional arrays, index-based access, length property, and practical examples including a three by three matrix.

Explore Java exceptions, including unchecked and checked types. Learn how try, catch, and finally blocks handle runtime errors, with examples like divide by zero and file not found exception.

Learn how threads in Java enable multiple tasks to run concurrently in a program, including the thread life cycle from runnable to dead and concepts like run, sleep, join, yield.