CMPT 125/6 Lab 9

  1. Create a class Iterating. In it, create a (static) function printAll that takes any object that implements the Collection interface on Strings. So, its definition should look like this:

    public static void printAll(Collection<String> strings) { … }

    The function should print out each string from the collection, one per line:

    First string
    Second string
    last String

    To do this, you will probably need to use the for-each loop from Java 5.0 to iterate through the collection.

  2. In the Iterating class, add a (static) function useAL that creates an ArrayList of strings and calls printAll to output them.

    Create another function useHS that creates a HashSet of strings and calls printAll to output them.

  3. Create a class NiceInput that asks the user to enter a number, and stores it in an int. The program should not crash if the user types something other than a number:

    Enter a number: 34
    34 is a nice number.
    Enter a number: two
    That wasn't a number, but it was nice.

    You will have to catch an exception to do this. You should only catch the exception caused by incorrect input, not any other types.

  4. Create a text file named time.txt. In it, indicate how long it took you to complete this lab exercise.

When you're done, create a ZIP file containing all of the files you created for this lab and submit it with the submission server.