A Java class inherits these methods and can override any method that’s not declared final. For example, the non- final toString() method can be overridden, whereas the final wait() methods cannot.

Polymorphism in method overriding. It’s possible to change the return type of an overridden method if it is a covariant type. A covariant type is essentially a subclass of the return type. Here ...

You can quickly and easily correct this Java method modifier issue based on how soon you can refactor. Then, it just comes down to which method you want to use. Let's explore two options on how to fix ...