This looks like the Liskov substitution principle that Uncle Bob Martin described: Substitute a derived class (Square) for a base class (Rectangle). From the standpoint of the compiler, the above code ...

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.

Polymorphism —or an object’s ability to execute specialized actions based on its type—is what makes Java code flexible. Many design patterns created by the Gang Of Four rely on some form of ...

In this example, if Address doesn’t implement Serializable, a java.io.NotSerializableException will be thrown when trying to serialize a Person object. See Also: Top Java IDEs and Code Editors ...

Looking to present a new solution to the problem of modernizing COBOL apps, IBM today unveiled Code Assistant for IBM Z, which uses a code-generating AI model to translate COBOL code into Java.

To help programmers both anticipate and recover from runtime errors, the Java programming language defines a special class named the RuntimeException. Given their potential to stop an otherwise ...