Write each of these methods in the Unit7ProblemSe

  Write each of these methods in the  Unit7ProblemSet.java class.  Exercises to be completed:  Each method  below, including main, should handle (catch) any Exceptions that are  thrown.  If an Exception is thrown and caught, print the Exception's  message to the command line.  Write a complete Java method called  checkWord that takes a String parameter called word, returns nothing,  and is declared to throw an Exception of type Exception. In the method,  check if the first character of the parameter is a letter. If it is not a  letter, the method throws an Exception of type Exception with the  message of: "This is not a word."  Write a complete Java method called  get Word that takes no parameters and returns a String. The method  prompts the user for a word, and then calls the checkWord method you  wrote in #1 above, passing as a parameter the word the userprovided as  input. Make sure the get Word method handles the Exception that maybe  thrown by checkWord.  Write a complete Java method called writeFile that  takes two parameters: an array of Strings (arrayToWrite) and a String  (filename). The method writes the Strings in the arrayToWrite array to a  text file called filename (the parameter), with each String on a  separate line.  Write a complete Java method called readFile that takes a  String as a parameter (filename) and returns an ArrayList of Strings  (fileContents). The method reads the text file identified by the  filename parameter and populates the ArrayList with an element for each  line in the text file.  Do the following in the Unit7ProblemSet.java  main method in the order specified:  Call the get Word method you wrote  in #2 above and print the result to the command line.  Create an array  of Strings called testData and populate it with at least three elements.   Call the writeFile method you wrote in ft 3 above passing the array  you created in #5.2 and the String "data.txt".  Call the readFile method  you wrote in #4 above to read the file you wrote in #5.3. Assign the  result of readFile to an ArrayList variable in main called fileContents.   Write a loop to print the contents of the fileContents ArrayList to  the command line.  

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