Java Complete Course Using Visual Studio Code

Explore how to declare and initialize int, float, and char arrays in Java, use a scanner for input, and print them with for and for-each loops in zero-based indexing.

Explore Java arithmetic operators with integers using a scanner for keyboard input to perform addition, subtraction, multiplication, division, and modulus and print results.

Explore Java bitwise operators using byte values 12 and 10, including not, and, or, xor, and left and right shifts, with results like -13, 8, 14, 6, 48, and 3.

Explore Java relational operators, including ==, <, <=, >, >=, and !=, through boolean conditions and result demonstrations that show true or false outcomes.

Explore how Java unary operators work, including unary minus, post-increment and pre-increment, post-decrement and pre-decrement, and boolean negation, with concrete variable demonstrations.

Explore Java relational operators, including equals, less than, less than or equal, greater than, greater than or equal, and not equal, with a boolean result demonstration.

Learn Java commenting techniques in Visual Studio Code, including single line and block comments, and use toggle and block comment shortcuts to add or remove annotations.

Demonstrates how to use float and double in Java, including the f suffix, type casting during division, and printing results; highlights memory sizes and default double behavior.

Explore how Java's char type stores characters with single-quoted literals and prints them, comparing ASCII values and Unicode hex 0041 to capital A, and 70 to F.

Explore how the boolean data type works in Java, declare and print true and false, and learn why 100 cannot be assigned to boolean in VS Code.

Explore how to create and use strings in Java by converting a character array with the string constructor, reading input with a scanner, and concatenating strings using the plus operator.

Explore Java string functions from the standard library, including length, equals and equals ignore case, charAt, startsWith, endsWith, indexOf, lastIndexOf, replace, substring, split, and trim, with practical demonstrations.

Learn how to use a Java ArrayList of strings to add cities, check size, print contents, and insert a city at a specific index using a for-each loop.

Learn how the Java set interface eliminates duplicates and supports union, intersection, and difference using two integer arrays and set instances, populated with a for-each loop and printed.

Explore how to implement Java's comparator interface, define a compare method for two strings, and sort an array list of city names using a custom comparator.

Explore how to implement a Java queue using java.util.Queue with a LinkedList, add elements, check size, and remove front elements to demonstrate first in, first out behavior.

Push integers onto a stack, inspect the top with peek, and remove elements with pop in a Java stack implementation, observing size and isEmpty to drive the loop.

Explore how a for loop in Java initializes a loop control variable, checks a condition, and updates the variable to accumulate a sum from 0 to 9, yielding 45.

Demonstrates using a while loop in Java to sum numbers from 0 to 9 and print the final total, 45, after the loop ends.

Explore how the break statement exits a Java loop when a equals ten inside an infinite while loop, allowing the rest of the program to execute.

Demonstrates the Java continue statement inside an infinite while loop, skipping the rest of the loop when a is between 5 and 10, and using break to exit after reaching 15.

Explore Java switch case statements in this VS Code demonstration, reading a first character via scanner, mapping A, B, C, D to cases with break, default handling, and optional fall-through.

Learn how the static keyword in Java defines class-wide variables and methods shared across all objects, while non-static variables remain per instance, and static methods access only static variables.

Learn how Java's priority queue orders student objects by rank by implementing Comparable and overriding compareTo, then adding students and iterating to print them in sorted order.

Explore enumeration and iterators in Java by populating a vector from a string array, iterating with enumeration and iterator, and building a linked list with addAll and add.

Explore built-in java exceptions with practical examples of array index out of bounds, null pointer, and number format exceptions, and learn how try-catch blocks handle errors.

Explore the final keyword in Java, including final variables initialized in a constructor, a final method that cannot be overridden, and a final class that cannot be extended.

Java hash table maps string keys to integer values with put and get, showing unique non-null keys and that insertion order is not preserved.

explore string buffer and string builder in Java, covering default and set capacities, append and insert operations, and reversing content with practical examples in Visual Studio Code.

Illustrate Java inheritance by defining a base class employee with a protected salary and two subclasses, developer and tester, that sum salary and bonus to print 40,000 and 50,000.

Explore the this keyword in Java, showing how to distinguish instance variables from parameters, use this in parameterized and non-parameterized constructors, and reference the current object.

Explore how Java uses polymorphism through function overloading, with multiple area methods sharing the same name but different signatures to calculate rectangle, square, and circle areas via static calls.

Explore vectors in java using a num vector to store integer objects, add items, print the size, and iterate with a for-each loop.

Demonstrates how to implement user defined exceptions in Java by defining a below age exception, throwing it when age is under 18, and handling it with try-catch.

This lecture demonstrates Java wrapper classes by creating integer wrapper objects from primitives, and parsing strings with Integer.parseInt. It shows converting numbers to binary and hexadecimal using Long.toBinaryString and Long.toHexString.

Extend the thread class in Java and override run to define thread execution. Use Thread.sleep for 100 milliseconds to yield parallel execution with the main thread printing 0–9.