Exercise 1 Write a recursive method for countdown. For example, if the user enters 10, the method should perform the countdown starting from 10 to 0. • Write the code in a single .java file named...

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Extracted text: Exercise 1 Write a recursive method for countdown. For example, if the user enters 10, the method should perform the countdown starting from 10 to 0. • Write the code in a single .java file named Ex1Lab07.java which should also contain the main method for testing.