whose_login.java:106: unreported exception java.security.NoSuchAlgorithmException; must be caught or declared to be thrown
MessageDigest md = MessageDigest.getInstance("SHA-1");

I've made a JSP-Site with SHA-1 and DSA Algorithm. It works properly.

Then I tried to make a JavaBean and now by compiling I recieve the error message (you can see it on the top).

What have I to do?
Must I change some java property files or have i to declare something more in the Bean?

Thanks for your answer & excuse my bad English!