( Screen Saver for a Random Number of Lines) Modify your solution to Exercise 13.19 to enable the user to enter the number of random lines that should be drawn before the application clears itself and...

enable the user to enter the number of random lines that should be drawn before the application clears itself and starts drawing lines again. Use a JTextField to obtain the value. The user should be able to type a new number into the JTextField at any time during the program’s execution. Use an inner class to perform event handling for the JTextField.