Problem
1. Explain why the Java dynamic dispatch algorithm, which looks for the method to invoke for a call o.a(), will never get into an infinite loop.
2. Write a Java class that extends the Progression class so that each value in the progression is the absolute value of the difference between the previous two values. You should include a default constructor that starts with 2 and 200 as the first two values and a parametric constructor that starts with a specified pair of numbers as the first two values.