Methods

Not only does a subclass inherit the superclass's fields, it also inherits the superclass's methods. * The methods exist in the superclass, but the subclass can call them.

We can imagine our Employee extends Person class diagram looking like

The Employee class has all the Person fields and methods, but the fields and methods only exist in Person.

Practice Exercise

It is important to note that constructors are not inherited.

Drill

Inheritance/com.example.inheritance.drills.Employee

Employee's getInfo() method uses firstName and lastName references to print Employee information.

public String getInfo() {
  return firstName + " " + lastName + " " + age + " " + title + " " + salary;
}

* Change this method to call getName(), which is inherited from Person, instead of using the firstName and lastName references. * Run EmployeeApp to make sure the change works. Now your Employee subclass is calling an inherited superclass method.

(Solution: Employee3.java, EmployeeApp2.java)

Reference: https://docs.oracle.com/javase/tutorial/java/IandI/subclasses.html

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