Java Coding Challenges for Beginners with Solutions
Reading about Java only gets you so far. At some point you need to write code without a tutorial holding […]
Best Java IDEs Compared: IntelliJ vs Eclipse vs VS Code
The right IDE can make Java development faster and less frustrating. The wrong one adds friction to every task. Three
Java vs JavaScript: Key Differences Explained
Java and JavaScript are about as related as car and carpet. The similar names cause endless confusion, but these are
Introduction to Java Generics
You’ve used generics every time you created an ArrayList. The angle brackets in ArrayList<String> specify what type the list holds.
Java Collections Framework Overview
You’ve used ArrayList to store collections of objects. But ArrayList is just one option. The Collections Framework provides many data
Reading and Writing Files in Java
Programs often need to persist data. Without files, everything disappears when the program ends. File I/O lets you save data,
Java Exception Handling
Programs encounter problems. A file doesn’t exist. A network connection drops. A user enters text when you expected a number.
Abstract Classes in Java
Interfaces define pure contracts with no implementation. Regular classes provide complete implementations. Abstract classes sit in between. They can define
Java Interfaces
Java allows only single inheritance. A class can extend one parent. But what if a class needs capabilities from multiple
Java Encapsulation
So far, you’ve accessed object fields directly. Set a dog’s name with dog.name = "Buddy". Read a car’s mileage with
Java Polymorphism
Inheritance lets child classes override parent methods. Polymorphism takes this further. It lets you write code that works with a
Java Inheritance
Classes often share common characteristics. Dogs, cats, and birds are all animals. Cars, motorcycles, and trucks are all vehicles. Inheritance