Error in Weblogic Server 8.1, Works fine with 7.0

Question

          I have an application running fine on WLS 7.0, After migration to Weblogic 8.1,
          the first page itself throws the following error: p_servlet/__home.java:18: '.'
          expected
          import DataBaseManager; //[ /home.jsp; Line: 3]
          There is a statement in home.jsp file
          <%@ page import = "DataBaseManager" %>
          This works fine for WLS7.0
          But in WLS8.1 it gives the following error
          /opt/bea/wls811/domains/devl/./server-a/.wlnotdelete/extract/server-a_fac_fac/jsp_servlet/__home.java:18:
          '.' expected
          probably occurred due to an error in /home.jsp line 3:
          <%@ page import = "DataBaseManager" %>
          If I put this class DataBaseManager in a folder "com", then I gave
          <%@ page import = "com.DataBaseManager" %>
          This works fine in 8.1.
          So whats the problem. IS Package Structure mandatory.
          PLs. Help
          

Answer 1

From http://java.sun.com/j2se/1.4/compatibility.html:
          The compiler now rejects import statements that import a type from the unnamed
          namespace. Previous versions of the compiler would accept such import
          declarations, even though they were arguably not allowed by the language
          (because the type name appearing in the import clause is not in scope). The
          specification is being clarified to state clearly that you cannot have a simple
          name in an import statement, nor can you import from the unnamed namespace.
          To summarize, the syntax
          import SimpleName;
          is no longer legal. Nor is the syntax
          import ClassInUnnamedNamespace.Nested;
          which would import a nested class from the unnamed namespace. To fix such
          problems in your code, move all of the classes from the unnamed namespace into a
          named namespace.
          Rajesh Chande wrote:
          > Hi Nagesh,
          >
          > If this is the case, then that requires a lot of recoding for developers that
          > developed application on JDK Version less than 1.4, So I would strongly request
          > you to give me the source of your statement in java language specification or
          > on Java Sun Site.
          >
          > Thanks.
          >
          > Rajesh.
          >
          > "Rajesh Chande" <[email protected]> wrote:
          >
          >>Thanks a lot, Nagesh for this valuable input, where can i get this information
          >>documented in jdk1.4, that would be very helpful, if u provide me with
          >>this info.
          >>
          >>Thanks once again.
          >>
          >>Regards,
          >>
          >>Rajesh.
          >>
          >>"Nagesh Susarla" <[email protected]> wrote:
          >>
          >>>This actually has to do with javac's behavior in 1.4.x. Javac (jdk1.4.x
          >>>onwards) doesnt support the dependencies of a default packaged class
          >>>in a
          >>>packaged class. (This was supposedly a bug in the earlier versions and
          >>>against the jls i think)
          >>>Since 8.1 uses 1.4 you see it only in 81. So any class w/o a package
          >>>cannot
          >>>be used in a jsp (which is compiled into a package jsp_servlet by default)
          >>>
          >>>--Nagesh
          >>>
          >>>
          >>>"Rajesh Chande" <[email protected]> wrote in message
          >>>news:[email protected]...
          >>>
          >>>>I have an application running fine on WLS 7.0, After migration to
          >>
          >>Weblogic
          >>
          >>>8.1,
          >>>
          >>>>the first page itself throws the following error:
          >>>
          >>>p_servlet/__home.java:18: '.'
          >>>
          >>>>expected
          >>>>import DataBaseManager; //[ /home.jsp; Line: 3]
          >>>>
          >>>>There is a statement in home.jsp file
          >>>>
          >>>><%@ page import = "DataBaseManager" %>
          >>>>
          >>>>This works fine for WLS7.0
          >>>>
          >>>>But in WLS8.1 it gives the following error
          >>>>
          >>>>
          >>>
          >>>/opt/bea/wls811/domains/devl/./server-a/.wlnotdelete/extract/server-a_fac_fa
          >>>c/jsp_servlet/__home.java:18:
          >>>
          >>>>'.' expected
          >>>>probably occurred due to an error in /home.jsp line 3:
          >>>><%@ page import = "DataBaseManager" %>
          >>>>
          >>>>If I put this class DataBaseManager in a folder "com", then I gave
          >>>><%@ page import = "com.DataBaseManager" %>
          >>>>
          >>>>This works fine in 8.1.
          >>>>
          >>>>So whats the problem. IS Package Structure mandatory.
          >>>>
          >>>>PLs. Help
          >>>
          >>>
          >
          scott dunbar
          bea systems, inc.
          boulder, co, usa