$1.[5$ points$]$ TestScores ClassWrite a class named TestScores. The class constructor should accept an array of test scores as its argument. The class should have a method that returns the average of the test scores. If any test score in the array is negative or greater than $100,$ the class should throw an IllegalArgumentException. Demonstrate the class in a program$\mathrm{.}2.[5$ points$]$ TestScores Class Custom ExceptionWrite an exception class named InvalidTestScore. Modify the TestScores class you wrote in Programming Challenge $1$ so that it throws an InvalidTestScore exception if any of the test scores in the array are invalid$\mathrm{.}3.[7$ points$]$ Uppercase File ConverterWrite a program that asks the user for the names of two files. The first file should be opened for reading and the second file should be opened for writing.The program should read the contents of the first file, change all characters to uppercase, and store the results in the second file. The second file will be a copy of the first file, except that all the characters will be uppercase. Use Notepad or another text editor to create a simple file that can be used to test the program.