The Java definition continues with accessor methods. Accessors are methods that allow callers to read and write properties of an object: ...

But soon we will start to write programs that consist of several classes. So how can we access or modify object state if instance variables are private and only visible in a single class? In Java, we ...

In Java, we define public methods to access or modify the value of a private instance variable. We can evolve the implementation of a public method if the class design changes, while keeping the ...