1.     What is recursion?

2.     How do recursive calls to a method keep track of the parameter values and the values of local variables?

3.     Write a recursive function to calculate the factorial of a number.

4. Write a recursive binary search for an array.

1.     Assume that amt1 and amt2 are integers which have some values in them. Write a try-catch block that will try to divide amt1 by amt2 and put the result into a variable named quotient. If an ArithmeticException occurs, print a message saying “Invalid data” and set quotient to 0.

2. Assume that the main method has a try block that includes a statement which calls method1. Inside method1 is another try block that includes a statement which calls method2. Inside method2 is another try block that includes a statement which calls method3. What happens if method3 throws an exception? What happens if method2 has a catch block which can handle the exception? What happens if it does not have a catch block which can handle the exception? How does this progress if none of the methods can handle the exception?

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