1. Modify the method so it performs a caseinsensitive test. The method should return true if the argument ends with “.com” in any possible combination of uppercase and lowercase letters. 2. Write a...

1. Modify the method so it performs a caseinsensitive test. The method should return true if the argument ends with “.com” in any possible combination of uppercase and lowercase letters.

2. Write a method that accepts a StringBuilder object as an argument and converts all occurrences of the lowercase letter ‘t’ in the object to uppercase.