Introduction to programming with Java

Explain what a computer program is and how Java enables software to run on servers and devices via bytecode and a virtual machine.

Learn how to set up Eclipse for Java development by downloading the Eclipse package, unzipping it (no install), launching the IDE, and configuring the default workspace from the welcome page.

Learn to read the radius from the console using the Scanner class, convert input with next double, and compute and display the area for Java console programs.

Explore Java primitive data types, including byte, short, int, long, float, double, boolean, and char, learn their memory ranges, and when to use them versus BigDecimal for currency.

Create a Java program that reads a plus or minus sign, takes two numbers, and performs addition or subtraction using if and else if statements, with input validation.

Master switch statements in Java by mapping 1–12 to the months of the year using a scanner input, case labels, default handling, and printing the result.

Learn about for and while loops by building a Java project that prints a message ten times with a for loop, initializing i to zero and incrementing to ten.

Write a Java program that uses a for loop to sum numbers from 1 to 10, prints the result, and shows how to extend to 20 or hundreds of numbers.

Explore while loops in Java by using a counter to print values from 1 to 10, prevent infinite loops with increments, and print a message a hundred times.

Explore object oriented programming by coding methods with return values, parameters, and overloading, within an Eclipse project that defines a class with a main method.

define and call Java methods with int, double, or void return types, and explore method overloading by using multiple maxValue methods with different parameter types and overload resolution.

Explore single-dimensional arrays in Java by declaring and initializing arrays, printing values, summing elements, and identifying the maximum value with simple methods.

Explore circle objects to illustrate object oriented programming, showing how a circle's radius is a data field with state and behavior defined by a circle class and get area method.

Explore text input and output in Java by writing to and reading from files, using print writer and scanner, with a file class abstraction that works across Unix and Windows.

Explore inheritance and polymorphism in Java by modeling animals with a general base class and specialized dogs and cats, including constructors, getters, setters, and toString outputs.