1. Write a recursive method printStarPattern() that takes a nonnegative integer as a parameter and generates the following pattern of stars. If the nonnegative integer is 4, then the pattern generated is:

****

***

**

*

*

**

***

****

Also, write a main method that prompts the user to enter the number of lines in the pattern and uses the recursive method to generate the pattern. For example, specifying the number of lines to be 4 generates the preceding pattern.

also, Write a recursive method power() that takes a number and a power (integer) as parameters and calculate the power of the number. For example, if the number is 2 and power is 8, the method will calculate 2⁸ and return 256. Also, write a main method that prompts the user to enter a number and a power and uses the recursive method to calculate the power of the number.