Java Programming Tutorial

Learn to determine leap years in Java using modulo checks and logical operators: divisible by 4 but not by 100, or divisible by 400, and test with 2008.

Generate two random single-digit integers in Java, swap if needed, then prompt the user to compute the difference and display whether the answer is correct.

Explore the switch statement in Java, replacing complex if-else chains with a clear switch syntax, including cases, default, and break, plus practical examples like tax, weekdays, and Chinese zodiac.

Use the integrated debugger to set breakpoints, step over and into code, and inspect variables to diagnose a division by zero error in a Java program.

Learn core loop concepts in Java by using while and for statements, and create nested loops. Apply break and continue, handle sentinel values, and print prime numbers.

Choose among for, while, and do-while loops by understanding pre-test and post-test evaluation and the equivalence of loop forms, and select the most intuitive option.

Define max methods with the same name but different parameters to compare int and double values. Learn how the compiler chooses the best match and avoids ambiguous invocations.

Explore variable scope in Java, focusing on local variable lifetimes within blocks and loops, and how inner blocks create separate scopes and name conflicts.

Understand how to declare a variable-length argument list in Java with a last-parameter varargs, and see how the printMax method computes the maximum from those values in an array.

Explore how the Arrays class in Java enables sorting arrays, performing binary searches, comparing arrays with equals, and using copy, fill, and toString methods to display results.

Define a calculator program that reads three arguments: a first integer, an operator, and a second integer, and computes the result using a switch on the operator.

Explore passing a two dimensional array to a method, returning a 2D array, and calculating the sum of elements from a user entered 3x4 matrix, shown with a 78 total.

Write a Java program that grades a ten-question multiple-choice test for eight students by comparing a 2d answers array to a 1d key and displaying each student’s score.

Define classes as blueprints for objects, detailing their state with data fields and their behavior with methods, including constructors for initialization.

Model a TV as a class with channel, volume, and power state; implement a public constructor and methods to turn on/off, set channel, channel up/down, and volume up/down, test objects.

Explore how static variables share data across all objects, contrast with instance fields, and use static methods to access class data, including counting objects.

Explore how the this keyword references the object itself and enables invoking another constructor, while also linking to instance fields and parameters.

Explore aggregation as a has-a ownership relationship in Java, where an aggregating class owns an aggregated object, such as a student with an address or a person with a supervisor.

Explore object oriented design by building a Java course class with a name, a students array, and addStudent, dropStudent, and getStudent method, plus a TestCourse demo.

Design a Java integer stack with push, pop, peek, isEmpty, and size methods, implementing dynamic capacity resizing to accommodate growth.

Explore the Java string class, its immutability, and constructors. Learn to replace, split, and match with regular expressions, and convert between strings and char arrays, plus formatting.

Learn how StringBuilder and StringBuffer provide mutable alternatives to strings, using append, insert, replace, reverse, and capacity management, with synchronization for thread safety.

Explore the super keyword and constructor chaining, where a subclass constructor calls its superclass constructor before executing its own tasks, and understand no-argument constructors and default constructors to avoid errors.

Dynamic binding selects the correct method at runtime by using the declared type and the actual type, traversing the class hierarchy to find the overridden implementation.

Explain how the object's equals method works to compare by reference and by content, and show overriding equals in a circle class to compare radii.

Introduces the ArrayList class for storing objects with generics, demonstrates adding, removing, and querying size, contains, indexOf, isEmpty, and inserting at an index, with forward and reverse iteration.

Learn key Java list operations: create string arrays, sort elements with the Collections.sort method, find max and min values, and shuffle elements. See practical examples and API usage.

Java programming tutorial teaches designing a stack class for holding objects, implementing methods such as isEmpty, size, peek, pop, push, and search, with a test demonstrating usage.

Explore how private, protected, default, and public modifiers govern access to data fields and methods across classes, packages, and subclasses, including when to use protected access.

Learn how the final modifier prevents extension and method overriding in Java, as shown with a final maths class and final methods that cannot be overridden by subclasses.