image search servlet

Hi guys,
I'm developping a search page built in servlets/Java . I want it to use google image search
http://images.google.com for the backend. It should get a keyword, type and color and get the results then filter them based on max picture size and display as many correct pictures on the page (based on number of images required).

can someone point me how to Implement this funtionality . especially how to get the result images from backend search engine.

thnx.

rather than trying to screen-scrape the results from google, you may want to look at the web service interface they provide on their google api page.