New to Java

Hi can anybody help here with a simple way to convert numbers to words.
It is intended to work as a (Check Writer).
1. Accept a double between 0-999999.99.
2. It should truncate the extra pennies.
3. then take it through another method to convert the integers for every thousand, hundred, and cents to words. Using simple (if statement or switch).

I have gotten through some of my setup but couldn't figure out how to exactly separate the hundreds and the thousands and assign to strings then call them from main. Also how to handel special cases like (one dollar), (one cent) and plural dollars vs. single dollar and cent. I have looked some samples on the net. But they could be much of help. They tended to be little bit complicated (for me at this stage).
Any help would be appreciated.