Need some help writing some methods in java.

~write a static method called printPassing that accepts an array of grades(doubles) and a number n as parameters and prints the first n elements of the array that are at least 60.0. If there are fewer than n elements that are at least 60.0, the method should print all of them and stop.

~write a static method called findList that accepts an ArrayList of strings and a substring as parameters and returns the the first string that starts with the substring.

~ Assume you have a class called Student that has a getFirstName() and getLastName() method. Write a static method called findStudent that accepts an ArrayList of Students and a first and last name as parameters and returns the student that has that name. The method should return null if there are no students with that name.

~continue assuming that you have the Student class. write a static method called allTaking that takes two parameters, the first is an ArrayList of all freshman students whoe have declared a major in CompSci. The second is an ArrayList of students who have registered for CS101. It should return whether or not every student who has a declared major in CS is registered for CS101. Two Student instances should be considered the same person if both their first and last names match.