In-Class Project

Class WordCount

Program Name: WordCount.java

Create a java class named WordCount counts the words in a file. See #1 under Programming Projects in your text. The program is going to count the number of words, lines, and total characters (not including white space) in the file. Assume that consecutive words are separated either by spaces or the end-of-line character.

Your program is going to have 2 methods:

• main method
• examineFile

Your main method should:

• Prompt the user for the name of the file to be examined
• Echo the file name.
• Create a new Scanner object for the file.
• Call examineFile passing the file scanner object

examineFile takes a file scanner object as a parameter. It should:

• Loop while data remains in the file
• Read a line from the file
• Create a line Scanner object
• Parse the line counting the number of words and non-whitespace characters
• After processing each line in the file, print the statistics:
  • Number of lines
  • Number of words
  • Total characters
  • Average word length

turnin: WordCount

Out-of-Class Projects

1. CompareFiles

Program Name: CompareFiles.java

SEE #2 Under Programming Projects in your text. Write a program that compares two files and prints out information about the differences between them. See the example in the text for the format of the output.

If there are no differences, print a message that there are no differences.

Your program should have 2 methods:

• main method
• compareFiles

To improve the modularity of your code, you may break this method down further.

main method:

• Create a Scanner object for reading from the keyboard.
• Create 2 Scanner objects, one for each file.
• Call compareFiles passing the 2 file Scanner objects.

compareFiles: takes 2 Scanner file objects.

• Loop until one of the files is empty, counting line numbers.
• Read the next line from each file.
• Compare the 2 lines read. If different, print the line number and each line (see text). If they are the same, print a message that they are the same.

turnin CompareFiles

2. ReWrite

ReWrite.java

Modify the WordCount.java you wrote for the In-class project.

• main method will also prompt the user for the name of an output file. Echo the file name. The main method will call examineFile passing the input file as well as the outputfile.
• examineFile will be modified to take two file parameters. When it reads a line from the input file, it should create a new String from the line read with "!!" appended to the line. It should write the newly created String to the output file. It should then to proceed to calculate the statistics o the original String read.

turnin: ReWrite