Build warning

[David W. Van Couvering]

I keep seeing this warning when I build now:

C:\derby\i18n3\trunk\java\client\org\apache\derby\client\net\NetConnection40.java:41: 
warning: getTypeMap() in org.apache.derby.client.am.Connection 
implements getTypeMap() in java.sql.Connection; return type requires 
unchecked conversion

found   : java.util.Map

required: java.util.Map<java.lang.String,java.lang.Class<?>>

public class  NetConnection40 extends 
org.apache.derby.client.net.NetConnection {

1 warning


Can anyone explain this?

Thanks,

David