Write a Java program to calculate the area of different shapes namely circle, rectangle, and triangle using the concept of method overloading. Write two Java classes Employee and Engineer.

This repository contains a collection of Java programming exercises, structured into different difficulty levels along with a set of Mini Projects. These exercises cover essential programming concepts ...

Every program maintains an internal stack of operands, and any bytecode instruction operates on that operand stack for the currently executing method. To process any values, those values must ...

Learn to use method overriding and abstract classes to achieve dynamic polymorphism in Java, a feature that allows different implementations of the same method.

Learn how to use synchronous and asynchronous callbacks in Java—including callbacks with lambda expressions, CompletableFuture, and more.

Method and variable handles vs. Java reflection To truly understand MethodHandles and VarHandles —what they do and why they are useful—it’s helpful to know a few things about reflection in Java.

We discuss how to work with directories, sub-directories, and traverse them using Java and the DirectoryStream method. Learn more.

However, with JShell you can run a full Java program without a main method. Just code your logic into a file and run it at the command line: You can run a Java program without a main method in JShell.