Write the following methods in a Java program:

a) A Java method Avg that returns the Average of multiples of a number N. The method input

parameters are an array A of numbers and the number N.

b) A Java method Sum that returns the sum of an array numbers greater than a number N. The method

input parameters are an array A of numbers and the number N.

c) A Java method OddArray that returns an array of odd numbers less than a value N given as parameter.

d) A Java method StringInFile that returns the number of times a string is present in a file. The filename

and the string are the parameters of the method.

e) A Java method called aboveAverage(...) of type integer that finds and returns how many numbers in an

array A as parameter are above the average of the array.

f) Test the above methods from the main method using the samples given in the class.

help me ....