How to check a large list of Indexed URL in search engine using a Java Program

Hi Guys,
I am trying to check thousands of URLs from search engine index, If they are existing or not. I need a Java program which can trigger these url one at a time to the search engine and record the response If it exists or not. I already ask this question to some Java questions and answers forum. But still I am waiting for complete solution.
Someone there who would be willing to spend some time to support me to solve this problem.

Thanks