can someone please do these in java im confused

11. Prompt the user for a letter grade and store this in a char. Then, write a multi-way "if" statement that ends in a catch-all if a non-existent letter grade (i.e., not A, B, C, D, F) is entered. The multi-way "if" asks: Is the grade an A? Else is the grade a B? Else is the grade a C? Else is the grade a D? Else is the grade an F? For each case, print an appropriate message to screen as to what letter grade was entered (or if a non-existent grade was entered). Notice the use of the word else in the sentence above, which provides for a more precise meaning. In spoken English we might use the word or instead, but of course, English is terribly ambiguous and Java needs to be discrete, deterministic, and precise.

12. Write a function called max that takes two integers as input and returns the larger of the two. That is, complete the function public static int max(int a, int b) { so that it returns the larger of a or b using an if statement.

13. Ask the user for two integers using a Scanner and report the largest and smallest values using the max function you just built. Consider the following output:

//sample output for problem 13 Enter two integers: 2 14 Largest is 14 Smallest is 2