Need for help while writing resolver

Respected fellows I am writing an application in Java. For which i need resolver which could translate the name of domain to its IP. eg. bc.edu.pk to 210.56.11.76 is there any function of net package of java library regarding this problem which could directly perform this task. i have

How could one use Swing in linux 7.0

Dear fellows, I had a problem with linux JVM, when I write any swing programe in linux then an unknown package or class's error does occur. I am new in linux as well as java. and have a lot of craze of java in linux. can somebody tell me about jdk1.3 for linux.