This question involves a class namedFileTextthat represents a text file.public class

This question involves a class named FileText that represents a text file.

  public class

FileText

  {

      private String fileName;

      private int fileBytes;

      private ArrayList‹String› wordList; // the contents of the text file

      // constructors not shown

      // postcondition: calculates the number of bytes in this file and updates

      // the instance variable fileBytes

      public void fileSize()

      {

      }

      // precondition: 0 < newWords.length < wordList.size ()

      // postcondition: elements from the newWords array are placed into consecutive

      // odd index positions of the wordlist ArrayList

      // postcondition: the value of fileBytes is updated

      public void mergeWords(String[] newWords)

      {

      }

      // other methods not shown

  }

The wordlist ArrayList stores the words (tokens) found in a text file. Suppose wordlist contains the following elements:

   [Mary, had, a, little, lamb]

The fileSize method; the size of the file is computed in bytes. Each character in a word counts as one byte. In addition, there is a space in between each word, and each of those spaces also counts as one byte. For the example above, the fileSize method would compute 4 + 3 + 1 + 6 + 4 as the sum of the lengths of each String in the ArrayList. The value of fileBytes would be this sum plus 4, because there would be 4 spaces in between the 5

For the mergeWords method, assume the values for the newWords array are as follows:

   {"one", "two", "three"}

After the method has executed, fileBytes will have an updated value, and wordlist would contain the following elements:

   [Mary, one, had, two, a, three, little, lamb]

Complete the fileSize and mergeWords methods below. Be sure to include the method headers.