Problem Design: The PigLatin Class

The above analysis leads to the following specification for the PigLatin class. Its main role is to translate English expressions into Pig Latin. One design we could use here is to model PigLatin after the Math class -- that is, as a utility class which provides a useful method, but which is not designed to be instantiated at all.

• Purpose: To translate an English expression into Pig Latin.
• Modifiers: final, so it cannot be extended.
• Constructor: private, so no instantiation is possible.
• Instance variables: None (no need to store anything).
• Public instance methods: None (no need to have instances).
• Public static method: translate(String) translates its String parameter into Pig Latin.
• Private static method: translateWord(String) translates a single word into PigLatin.
• Private static method: findFirstVowel(String) returns the location of the first vowel in its String parameter.

As this design suggests, the PigLatin class will have only one public method but will utilize the private methods described above to help perform its task.