Write a “skeleton” GUI program that implements the WindowListener interface. Write code for each of the methods in Display 18.1 that simply prints out a message identifying which event occurred. Print the message out in a text field. Note that your program will not end when the close-window button is clicked (but will instead simply send a message to the text field saying that the windowClosing method has been invoked). Include a button labeled Exit that the user can click to end the program.
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