Compare inheritance and composition, the two fundamental ways to relate Java classes, then practice debugging ClassCastExceptions in Java inheritance.

The more familiar you are with Object and its methods, the more you can do with your Java programs.

University-Personnel-Management-System Developed a comprehensive Java program to manage university personnel, demonstrating the use of inheritance, abstract classes, and method overriding.

Sealed classes in Java let developers limit the creation and use of subclasses and preserve the class hierarchy. Here is how sealed classes in Java work.