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General J2EE: please check my code

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  1. please check my code (2 messages)

    • Posted by: zhang zhang
    • Posted on: June 04 2004 15:17 EDT
    I'm using jboss3.2.3
    I defined a class:
    import com.sun.rowset.*;
    import java.sql.*;
    public class RowSetAdaptor extends java.lang.Object implements java.io.Serializable
    {
    private String s;
    private CachedRowSetImpl rowset;

    public RowSetAdaptor()
    {
    try{

    rowset = new CachedRowSetImpl();

    }catch(Exception e){System.out.println("constructor:"+e);}


    }

    I put this class file in a jar and put this jar in the C:\jboss-3.2.3\server\default\lib
    in my code,I use this class:
    RowSetAdaptor rs = new RowSetAdaptor();
    or
    RowSetAdaptor rs = null;
    rs = new RowSetAdaptor();

    the first time after start jboss,I get error:
    constructor:java.lang.NullPointerException
    but this only happen on first time,if I run it again,no errors,why?looks like something not been populate in the memory for the first time.by the com.sun.rowset.* classes are in th rowset.jar which is also in C:\jboss-3.2.3\server\default\lib folder
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  2. please check my code[ Go to top ]

    Please post the hole stack trace. The exact class and line where the exception is thrown should be specified there.

    Regards,
    Martin
    Reply to this Reply to original

  3. please check my code[ Go to top ]

    please check this link

    http://forums.java.sun.com/thread.jsp?thread=444943&forum=48&message=2622751

    its a bug in Sun's implementation,

    hope this helps,
    cheers,
    parthi
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