The 'client area' of a window is the area used to display the contents of the window (thus a title bar or border would lie outside the client area). For the Window class, the client area is nothing more than the entire window, and thus the height of the client area is nothing more than the value of the height instance variable. Assuming the existence of a Window class with existing methods, getWidth and getHeight, add the method getClientAreaHeight that returns the height (an integer) of the client area of the window.

Window.java

Main.java

Explanation:

Window.java

There is a Window class with two int type attributes, width and height (Line 1 - 3).

The constructor of this class will take two inputs, width and height and set these input to its attributes (Line 5 - 8). There are two methods getWidth and getHeight which will return the value of attributes width and height, respectively (Line 10 - 16).

The required new method getClientAreaHeight is defined in line 18 -20. This method will call the getHeight method to return the height value of the window (Line 19).

Main.java

We test the Window class by creating one Window instance and call the getClientAreaHeight method and print the return output (Line 1 -6).

We shall see 15 is printed.

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