Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.

Here’s an example: public abstract class JavaMascot { abstract JavaMascot getMascot(); } ... To go further, consider this code sample using the Java Collections API without polymorphism: ...

Step 2: Create the Java classes. The next step is to open the restful-spring-example project and create two classes: Score.java and ScoreService.java.. Right click on the com.mcnz.restful.spring.boot ...