Single inheritance and multiple inheritance. The example in Figure 1 illustrates single inheritance in which a child category inherits state and behaviors ... How to use the extends keyword in Java.

This is an example of Java inheritance with method overriding. First, we extend the Animal class to create a new Cat class. Next, we override the Animal class’s emitSound() method to get the ...

The modifier non-sealed is the first hyphenated keyword proposed for Java. The non-sealed keyword brings flexibility into the rigid world of sealed classes, to allow a particular implementation to ...