Write a declaration of a local variable called cs101 that can hold an ArrayList of Student.

Build two classes (Fraction and FractionCounter) and a Driver for use in counting the number of unique fractions read from a text file.   We’ll also reuse the ObjectList class we built in lab to store our list of unique FractionCounters, instead of directly using arrays or the ArrayList. Remember NO DECIMALS! Handle input of any length Introduction Your project is to read in a series of fractions from a text file, which will have each line formatted as follows:   “A/B”.  A sample text file is listed below, and the purpose of your program is to read in one line at a time and build a Fraction object from A and B.  For each unique Fraction seen, your program will create a FractionCounter object used to track the number of occurrences of that specific fraction.  When all the input is consumed, your program will print out its ObjectList of unique FractionCounters, which should report the fraction and its count – see output below. You can assume no blank lines or misleading characters; see…

IN JAVA. Any help is appreciated! Thank you!   PART 1 : Automobiles Create a data class named Automobile that implements the Comparable interface. Give the class data fields for make, model, year, and price. Then add a constructor, all getters, a toString method that shows all attribute values, and implement Comparable by using the year as the criterion for comparing instances. Write a program named TestAutos that creates an ArrayList of five or six Automobiles. Use a for loop to display the elements in the ArrayList. Sort the Arraylist of autos by year with Collections.sort(). Finally, use a foreach loop to display the ArrayList sorted by year.

How can you figure out how well an ArrayList works?

In Java.

Please help me with this question