hello, please could I get help with 9 and 11 using Java following the instructions. thanks

CHAPTER 8 - EXERCISES 231 9. Write a method that determines whether all the characters in a string are the same, using only library String methods, but no loops or recursion. Hint: there are several approaches. For example, see Question 6 above. 11. Write a method cutout that removes the first occurrence of a given substring (if found) from a given string. For example: String str = "Hi-ho, hi-ho"; String result = cutout (str, "-ho"); // result is set to "Hi, hi-ho