needs to be in java

For this program you are to complete the methods given to you to implement a bag (data structure) using an array. A bag is an unordered collection of values that can have duplicate values. This homework assignment is designed to help you learn about making lava methods and using arrays. This is an individual assigmment you may not share code with other students. Your task is to fill in the implementation of the methods that manipulates an array of integers. We have provided a rmain method in the Main chass that tests some of your methods. We will not be grading the main method in this assigninent. Do not have any extraneous print statements in your program, including error messages. Your program should print out exactly what is specifed and nothing else. (if the comment prefixing a method does not mention printing. the method should not print anythings) Implement the basic helper methods listed below: Implement the basic helper methods listed below: 1** Adds an element to the bag into the first (smallest index) empty location. If the bag is full then print an error message.*/ public static void add(int item, int bag[]) \{\} /** Removes all elements, with the specified value, from the bag. Print an error messoge if the bag is empty or if the specified item is not in the bag. % public static void remove(int item, int bag[]) \{\} /** Removes all elements from the bag. */ public static void reset (int bag[]) \{\} 1 Counts and returns the frequency of the specified item in the bag. % public static int getFrequency (int item, int bag[]) \{\} 1** Prints all elements in the bag. */ public static void display(int bag[]) \{\}