From an object-oriented programming perspective ... Only functional interfaces can use the lambda feature in Java. Abstract classes with only one abstract method cannot use lambdas.

Here's what you need to know about object-oriented programming with classes, methods, objects, and interfaces, with examples in Java ... further by using abstract types. Here, abstract just ...

This course is the continuation of Intro to Programming with Java 1. So, you’re well on your way. But here, you’ll get into some deeper tech, like object-oriented programming skills, inheritance, ...

The Java programming language emerged roughly 25 years ago, when Smalltalk and C++ dominated. Back then it was easy to argue that the world didn't need another object-oriented programming language.