boolean isEmpty

Dec 6, 2023 | infoworld.com | Rafael Del Nero |Java Developer |boolean isEmpty |Class List

Abstract classes and interfaces are plentiful in Java code, and even in the Java Development Kit (JDK) itself. Each code element serves a fundamental purpose:Interfaces are a kind of code contract, which must be implemented by a concrete class. Abstract classes are similar to normal classes, with the difference that they can include abstract methods, which are methods without a body. Abstract classes cannot be instantiated.