This is an in-depth java tutorial for beginners. Learn what Java is, how to get started, and how to build basic apps using key concepts!

Java Full Tutorial covers Java basics to advanced topics. Learn JVM, JRE, JDK, writing your first program, variables, data types, operators, loops, arrays, classes, objects, methods, constructors, and ...

My code is a perfect example of Run-Time Polymorphism in Java. Animal is the parent class with a method sound(). Dog and Cat are child classes that override the sound() method with their own behavior.

In Java, polymorphism results in code that is more concise and easier to maintain. This tutorial provides an overview of the four types of Java polymorphism, but our focus is subtype polymorphism.