Method first() JDBC

Help
i trying to put my recorset at teh firts record
i use this connection in a jsp file
<%
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
Connection Con =DriverManager.getConnection("jdbc:microsoft:sqlserver://192.168.232.35;user=x;password=x");
String Sql= "SELECT car_id.car_dsc FROM CARS"
CallableStatement Cs = Con.prepareCall(SqlT1);
ResultSet RsTabla1 =Cs.executeQuery();
%>
AND THEN WHEN I USE THIS INTRUCTION
<%RsTabla1.first();%>
THE BROWSER SEND ME THIS MESSAGE
[SQLServer 2000 Driver for JDBC]Unsupported method: ResultSet.first
help PLIS....
I use this recordset and want to go to the fisrt again...

You need to call the overloaded prepareStatement() method to get a scrollable ResultSet. If your driver does not support these, you will not be able to use the first() method. Check if you can just use the next() method in such case.

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I am gettting compile error.. sttien that unknown symbol statemetn and resultset..
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hi,
in this code i want to get author book name from my database
but the problem that : the compiler give error on these lines :
statement= connection.createStatement();
ResultSet resultset = statement.executeQuery("");
statement.close();
please see my code and help me
import java.awt.Container;
import java.beans.Statement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
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beshoy wrote:
Compiling 1 source file to C:\Documents and Settings\beshoy\My Documents\NetBeansProjects\JDBC\build\classes
C:\Documents and Settings\beshoy\My Documents\NetBeansProjects\JDBC\src\project\DisplayAuthors.java:30: incompatible types
found : java.sql.Statement
required: java.beans.Statement
statement= connection.createStatement();You declared 'statement' as java.beans.Statement instead of java.sql.Statement. The Connection#createStatement() returns java.sql.Statement, not java.beans.Statement.
How did you miss this one in the JDBC tutorial? [http://java.sun.com/docs/books/tutorial/jdbc/index.html]
C:\Documents and Settings\beshoy\My Documents\NetBeansProjects\JDBC\src\project\DisplayAuthors.java:31: cannot find symbol
symbol : method executeQuery(java.lang.String)
location: class java.beans.Statement
ResultSet resultset = statement.executeQuery("");This one will solve itself if you fix the first error.
C:\Documents and Settings\beshoy\My Documents\NetBeansProjects\JDBC\src\project\DisplayAuthors.java:68: cannot find symbol
symbol : method close()
location: class java.beans.Statement
statement.close();This one will solve itself if you fix the first error.

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thanks.
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Jdbc abstract Jtable model problem

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// new class. This is the table model
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Vector colNames;
String dbColNames[];
String pkValues[];
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String pKeyCol;
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newRows = new Vector();
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dbColNames = new String[li_cols];
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catch(SQLException e){
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public String getColumnName(int col){
return dbColNames[col];
public int getRowCount(){
return allRows.size();
public int getColumnCount(){
return li_cols;
public Object getValueAt(int arow, int col){
row = (Vector) allRows.elementAt(arow);
return row.elementAt(col);
public void setValueAt(Object aValue, int aRow, int aCol) {
Vector dataRow = (Vector) allRows.elementAt(aRow);
dataRow.setElementAt(aValue, aCol);
fireTableCellUpdated(aRow, aCol);
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public void addRow(){
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public void deleteRow(int i){}
}And here is the code for the GUI:
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import javax.swing.event.*;
import javax.swing.table.*;
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JTable myTable;
JButton update;
JButton insert;
JButton delete;
JPanel p;
MyTableModel tm;
JScrollPane myPane;
MyTableApp(){
try{
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
catch(Exception e){
System.out.println("Error on look and feel");
update = new JButton("Update");
insert = new JButton("Add");
delete = new JButton("Delete");
p = new JPanel();
tm = new MyTableModel();
myTable = new JTable(tm);
myPane = new JScrollPane(myTable,
JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
myTable.setSelectionForeground(Color.white);
myTable.setSelectionBackground(Color.red);
myTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
p.add(myPane);
p.add(update);
p.add(insert);
p.add(delete);
update.addActionListener(new ActionListener(){
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tm.updateDB();
insert.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
tm.addRow();
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myTable.setRowSelectionInterval(tm.getRowCount()-1,tm.getRowCount()-1);
delete.addActionListener(new ActionListener(){
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tm.deleteRow(rowToDelete);
myTable.setEditingRow(rowToDelete -1);
myTable.setRowSelectionInterval(rowToDelete -1,rowToDelete -1);
this.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}); // end windowlistener
this.setContentPane(p);
this.setVisible(true);
this.pack();
} // constructor
public static void main (String args[]){
new MyTableApp();
} // main
} //class

When adding a row to a JTable, one should manipulate the table model. There are many examples of this on the web. Google is your friend.
Good luck.
Filestream

Errors using weblogic sql driver: "No JDBC connection can be made because the transaction state is marked rollback"

One of our customers starts to encounter this error message recently.
We checked our log files. It seems that the error happens when
to obtain a jdbc connection. Have anyone seen similar problems
and knows how to fix it? thanks in advance.
We are using weblogic server 6.1sp2, and weblogic sql type 4 driver.
The functions that invoke the jdbc calls are stateless session bean
methods with their transaction attributes marked as Required.
There is no nested calls of these methods.
A partial stack trace we obtained is as following:
java.sql.SQLException: No JDBC connection can be made
because the transaction state is
Marked Rollback
     at weblogic.jdbc.jts.Connection.getOrCreateConnection(Connection.java:586)
     at weblogic.jdbc.jts.Connection.prepareStatement(Connection.java:115)
     at weblogic.jdbc.rmi.internal.ConnectionImpl.prepareStatement(ConnectionImpl.java:135)
     at weblogic.jdbc.rmi.SerialConnection.prepareStatement(SerialConnection.java:76)
lixin

Joseph Weinstein <[email protected]> wrote:
>
>
YuanHui Liu wrote:
Joe,
We got the exact same error message. The error came after we got theJDBC connection,
and trying to create statement off it.
It occurs intermitently when we are running another standalone JAVAapp to do
some end of day work, which results in the DB Server being very busy(90+%CPU
usage) for about 5 minutes. We see a surge of requests to the WLSJDBC Connection
pool. This would sometimes result in all our subsequent DB requeststo fail and
lead to a crash.
We are using WLS6.0SP1. I do not think there's a 30 seconds wait leadingto a
connection timeout that caused this(rather it is the end effect).
Can you give us a more detailed explanation? Is there a miscommunicationbetween
our DB(Sybase12) and WLS?Hi. It looks to you like it's after you get the connection, but really
it's when the server is
gettng the pool connection. For performance/synchronization reasons we
do a clever
delay: When your code asks for a pool connection we quickly give you
the pool wrapper,
but we delay actually reserving the real underlying DBMS connection until
your first
real need for a connection, at your first JDBC call, such as createStatement()
etc.
It is while waiting for a pool connection long enough for the transaction
coordinator
to have timed you out before you ever get a chance. It's nothing to do
with the
DBMS or even JDBC, I believe. I think the weblogic server either has
too few execute-threads
and/or too few CPU cycles to do the work load.
Okay, so there's a lazy initialization of the connection.
From reading our log I believe our failur is immediate rather
than waiting for 30+ seconds(the default setting) from the DB,
the timeout occurred later as a result. At the time either because the DB Server
is very busy.
Since we are running WLS6.0 we have only one connection pool,
we have defined a max of 150 threads in the pool. While this
is happening the DB Server is being pinned by an overnight job,
but the WLS Server is not busy at all. The DB and WLS resides
on different physical boxes.
We also have a thread dump from the WLS console when we rebooted the server, it
showed that we are hanging on to the thread & jdbc
connections after these exceptions has occurred instead of releasing them, note
"16083"(~4.5 hours) seconds has passed:
142 116222 Retry rollback request for tx: 'transaction=(IdHash=2963855,Name =
[EJB UserManagerBeanImpl.signalICUserServletHeartBeat()],Xid=30643:8f3838f3709bf53d,Status=Rolling
Back. [Reason = Unknown],numRepliesOwedMe=0,numRepliesOwedOthers=0,seconds since
begin=16083,seconds left=10,ServerResourceInfo[weblogic.jdbc.jts.Connection]=(state=started,assigned=server),SCInfo[server]=(state=active),properties=({weblogic.jdbc=t3://159.55.158.25:8005,
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Scheduled Trigger
So I would argue this problem actually chewed up resources on the WLS server.
-Yuanhui Liu
>>
>>
Thanks.
-YuanHui Liu
Joseph Weinstein <[email protected]> wrote:
lixin wrote:
One of our customers starts to encounter this error message recently.
We checked our log files. It seems that the error happens when
to obtain a jdbc connection. Have anyone seen similar problems
and knows how to fix it? thanks in advance.
We are using weblogic server 6.1sp2, and weblogic sql type 4 driver.
The functions that invoke the jdbc calls are stateless session bean
methods with their transaction attributes marked as Required.
There is no nested calls of these methods.
A partial stack trace we obtained is as following:
java.sql.SQLException: No JDBC connection can be made
because the transaction state is
Marked Rollback
at weblogic.jdbc.jts.Connection.getOrCreateConnection(Connection.java:586)Hi. This sounds like a JVM thread starvation issue, and/or a server
load
issue. What is
happening is that the transaction is started, and times out beforethe
SSB even gets to
the first JDBC work. I would first verify that the customer is using
the very latest JVM
available for the machine.
Joe Weinstein
at weblogic.jdbc.jts.Connection.prepareStatement(Connection.java:115)
at weblogic.jdbc.rmi.internal.ConnectionImpl.prepareStatement(ConnectionImpl.java:135)
at weblogic.jdbc.rmi.SerialConnection.prepareStatement(SerialConnection.java:76)
lixin

No JDBC connection can be made (transaction state is Committing)

Hi. This seems to be a case where your EJB transaction has obtained a jts
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Is this possible? Nevertheless our EJB code is calling commit on on the jts
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Joe
Chetan Desai wrote:
>
Even we get these messages after a while the WL server is up and running. We are
using ver.6.1
Any help/suggestions?
-Chetan.
Joseph Weinstein <[email protected]> wrote:
Hi Roman. What version of our product are you using?
Joe
Roman Puttkammer wrote:
after some (presumably unrelated?) code changes, the weblogic server
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java.sql.SQLException: No JDBC connection can be made because the
transaction
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The complete stack trace follows below. Does anybody have an idea what
we're
doing wrong?
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roman
java.sql.SQLException: No JDBC connection can be made because the
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at
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at
weblogic.jts.internal.CoordinatorImpl.commitSecondPhase(CoordinatorImpl.java:403)
at
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at weblogic.jts.internal.TxContext.commit(TxContext.java:228)
at
weblogic.ejb.internal.StatefulEJBObject.postInvokeOurTx(StatefulEJBObject.java:204)
at
weblogic.ejb.internal.BaseEJBObject.postInvoke(BaseEJBObject.java:285)
at
com.multex.EJB.security.ListedSecurityEJBEOImpl.getSecurityTypeCode(ListedSecurityEJBEOImpl.java:198)
at
com.multex.EJB.security.FinancialInstrumentFacade.getSecurityTypeCode(FinancialInstrumentFacade.java:88)
at
com.multex.beans.security.FinancialInstrumentFunctorBuilder.createFinancialInstrumentFunctor(FinancialInstrumentFunctorBuilder.ja
va:43)
at
com.multex.beans.security.FinancialInstrumentFunctorBuilder.createFinancialInstrumentFunctor(FinancialInstrumentFunctorBuilder.ja
va:73)
at
com.multex.beans.portfolio.HoldingFunctorBuilder.createHoldingFunctor(HoldingFunctorBuilder.java:86)
at
com.multex.beans.portfolio.HoldingFunctorBuilder.createHoldingFunctors(HoldingFunctorBuilder.java:140)
at
com.multex.beans.portfolio.AccountFunctorBuilder.setUpHoldingFunctors(AccountFunctorBuilder.java:46)
at
com.multex.beans.portfolio.AccountFunctorBuilder.createAccountFunctor(AccountFunctorBuilder.java:67)
at
com.multex.beans.portfolio.AccountFunctorBuilder.createAccountFunctors(AccountFunctorBuilder.java:93)
at
com.multex.beans.portfolio.PortfolioFunctorBuilder.setUpAccountFunctors(PortfolioFunctorBuilder.java:78)
at
com.multex.beans.portfolio.PortfolioFunctorBuilder.createPortfolioFunctor(PortfolioFunctorBuilder.java:100)
at
com.multex.beans.portfolio.PortfolioFunctorBuilder.createPortfolioFunctors(PortfolioFunctorBuilder.java:61)
at
com.multex.beans.portfolio.PortfolioUserFunctorBuilder.createPortfolioUserFunctor(PortfolioUserFunctorBuilder.java:90)
at
com.multex.beans.portfolio.PortfolioApp.createPortfolioUserFunctor(PortfolioApp.java:208)
at
com.multex.beans.portfolio.PortfolioApp.setUserId(PortfolioApp.java:41)
at
com.multex.beans.portfolio.MinPortfolioApp.setUserId(MinPortfolioApp.java:94)
at
com.multex.beans.session.UserSession.init(UserSession.java:168)
at
com.multex.beans.session.UserSession.<init>(UserSession.java:51)
at
com.multex.EJB.session.UserSessionEJB.createSession(UserSessionEJB.java:226)
at
com.multex.EJB.session.UserSessionEJB.ejbLoad(UserSessionEJB.java:157)
at
weblogic.ejb.internal.EntityEJBContext.load(EntityEJBContext.java:130)
at
weblogic.ejb.internal.EntityEJBContext.afterBegin(EntityEJBContext.java:165)
at
weblogic.ejb.internal.StatefulEJBObject.getContextForInvoke(StatefulEJBObject.java:115)
at
weblogic.ejb.internal.BaseEJBObject.preInvoke(BaseEJBObject.java:174)
at
com.multex.EJB.session.UserSessionEJBEOImpl.isNew(UserSessionEJBEOImpl.java:196)
at
com.multex.EJB.session.UserSessionFacadeEJB.isNew(UserSessionFacadeEJB.java:128)
at com.multex.servlets.session.Servlet.doGet(Servlet.java:158)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:715)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:840)
at
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weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImpl.java:238)
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at weblogic.t3.srvr.ExecuteThread.run(ExecuteThread.java:106)--
The Weblogic Application Server from BEA
JavaWorld Editor's Choice Award: Best Web Application Server
Java Developer's Journal Editor's Choice Award: Best Web Application
Server
Crossroads A-List Award: Rapid Application Development Tools for
Java
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Jdbc 8.1.5 and segmentation violation

I am using the Oracle 8i client libs on a Unix box to connect to a Oracle 7.3.4 database on NT using the JDBC oci driver.
The application server we are running manages a pool of db connections that is used by clients . When the app server starts, it connects to the Oracle database, reads some config tables, and is fine. To grab a connection from the pool the client calls a reserve method of the app server. This reserve method first tries to execute a simple query to check that the connection is good. However, it takes a "segmentation violation" trying to create a jdbc statement object, which is weird since the app server actually uses the same reserve method to call the database during initialization (and it works just fine).
It could be something flakey with the Oracle 8i JDBC or client
libraries, as we never saw this happen with the 8.0.5 client libs. The same app server code runs just fine.
Any ideas on what could be causing this?

I am also using JDK 1.3.1_02 but am using the classes12 library. Is there a classes13 library?
New at this...thanks

Creating view to get first row for each table !!

I am having tables(more than 10) which are related using foreign key and primary key relationship.
Example:
Table1:
T1Prim T1Col1 T1Col2
Table2
T2For T2Prim T2Col1 T2Col2 T2Col3
(here T2For will have value same as T1Prim and in my design it has same column name i.e. T1Prim)
Table3
T3For T3Prim T3Col1 T3Col2 T3Col3
(here T3For will have value same as T2Prim)
and so on.
The data in the tables is like For table1 there will be one record, for table2 there will be one record and for table 3 there are more than one records.
Can i view either the first record for each of them or all records from each of them by writing the following view.
I have written a view like this:
Create or replace view test (T1Prim,T1Col1, T1Col2,T2Prim,T2Col1 T2Col2, T2Col3, T3Prim,T3Col1, T3Col2, T3Col3)
As
Select
Table1.T1Prim,
Table1.T1Col1,
Table1.T1Col2,
Table2.T2Prim,
Table2.T2Col1,
Table2.T2Col2,
Table2.T2Col3,
Table3.T3Prim,
Table3.T3Col1,
Table3.T3Col2,
Table3.T3Col3
From
Table1,
Table2,
Table3
where
Table1.Prim = Table2.For
and Table2.Prim = Table3.For
When i ran the select statement on the view I am not getting any data. Whereas there is data when select is ran on individual table.
Can someone please tell me where i am goofing.
Thanks in the anticipation that i will get some hint to solve this.
Eagerly waiting for reply.
Thanks !!

I mean use a collection :
Collection Methods
A collection method is a built-in function or procedure that operates on collections and is called using dot notation. The methods EXISTS, COUNT, LIMIT, FIRST, LAST, PRIOR, NEXT, EXTEND, TRIM, and DELETE help generalize code, make collections easier to use, and make your applications easier to maintain.
EXISTS, COUNT, LIMIT, FIRST, LAST, PRIOR, and NEXT are functions, which appear as part of an expression. EXTEND, TRIM, and DELETE are procedures, which appear as a statement. EXISTS, PRIOR, NEXT, TRIM, EXTEND, and DELETE take integer parameters. EXISTS, PRIOR, NEXT, and DELETE can also take VARCHAR2 parameters for associative arrays with string keys. EXTEND and TRIM cannot be used with index-by tables.
For more information, see "Using Collection Methods".
Syntax
Text description of the illustration collection_method_call.gif
Keyword and Parameter Description
collection_name
This identifies an index-by table, nested table, or varray previously declared within the current scope.
COUNT
COUNT returns the number of elements that a collection currently contains, which is useful because the current size of a collection is not always known. You can use COUNT wherever an integer expression is allowed.
For varrays, COUNT always equals LAST. For nested tables, normally, COUNT equals LAST. But, if you delete elements from the middle of a nested table, COUNT is smaller than LAST.
DELETE
This procedure has three forms. DELETE removes all elements from a collection. DELETE(n) removes the nth element from an index-by table or nested table. If n is null, DELETE(n) does nothing. DELETE(m,n) removes all elements in the range m..n from an index-by table or nested table. If m is larger than n or if m or n is null, DELETE(m,n) does nothing.
EXISTS
EXISTS(n) returns TRUE if the nth element in a collection exists. Otherwise, EXISTS(n) returns FALSE. Mainly, you use EXISTS with DELETE to maintain sparse nested tables. You can also use EXISTS to avoid raising an exception when you reference a nonexistent element. When passed an out-of-range subscript, EXISTS returns FALSE instead of raising SUBSCRIPT_OUTSIDE_LIMIT.
EXTEND
This procedure has three forms. EXTEND appends one null element to a collection. EXTEND(n) appends n null elements to a collection. EXTEND(n,i) appends n copies of the ith element to a collection. EXTEND operates on the internal size of a collection. So, if EXTEND encounters deleted elements, it includes them in its tally. You cannot use EXTEND with index-by tables.
FIRST, LAST
FIRST and LAST return the first and last (smallest and largest) subscript values in a collection. The subscript values are usually integers, but can also be strings for associative arrays. If the collection is empty, FIRST and LAST return NULL. If the collection contains only one element, FIRST and LAST return the same subscript value.
For varrays, FIRST always returns 1 and LAST always equals COUNT. For nested tables, normally, LAST equals COUNT. But, if you delete elements from the middle of a nested table, LAST is larger than COUNT.
index
This is an expression that must yield (or convert implicitly to) an integer in most cases, or a string for an associative array declared with string keys.
LIMIT
For nested tables, which have no maximum size, LIMIT returns NULL. For varrays, LIMIT returns the maximum number of elements that a varray can contain (which you must specify in its type definition).
NEXT, PRIOR
PRIOR(n) returns the subscript that precedes index n in a collection. NEXT(n) returns the subscript that succeeds index n. If n has no predecessor, PRIOR(n) returns NULL. Likewise, if n has no successor, NEXT(n) returns NULL.
TRIM
This procedure has two forms. TRIM removes one element from the end of a collection. TRIM(n) removes n elements from the end of a collection. If n is greater than COUNT, TRIM(n) raises SUBSCRIPT_BEYOND_COUNT. You cannot use TRIM with index-by tables.
TRIM operates on the internal size of a collection. So, if TRIM encounters deleted elements, it includes them in its tally.
Usage Notes
You cannot use collection methods in a SQL statement. If you try, you get a compilation error.
Only EXISTS can be applied to atomically null collections. If you apply another method to such collections, PL/SQL raises COLLECTION_IS_NULL.
You can use PRIOR or NEXT to traverse collections indexed by any series of subscripts. For example, you can use PRIOR or NEXT to traverse a nested table from which some elements have been deleted.
EXTEND operates on the internal size of a collection, which includes deleted elements. You cannot use EXTEND to initialize an atomically null collection. Also, if you impose the NOT NULL constraint on a TABLE or VARRAY type, you cannot apply the first two forms of EXTEND to collections of that type.
If an element to be deleted does not exist, DELETE simply skips it; no exception is raised. Varrays are dense, so you cannot delete their individual elements.
PL/SQL keeps placeholders for deleted elements. So, you can replace a deleted element simply by assigning it a new value. However, PL/SQL does not keep placeholders for trimmed elements.
The amount of memory allocated to a nested table can increase or decrease dynamically. As you delete elements, memory is freed page by page. If you delete the entire table, all the memory is freed.
In general, do not depend on the interaction between TRIM and DELETE. It is better to treat nested tables like fixed-size arrays and use only DELETE, or to treat them like stacks and use only TRIM and EXTEND.
Within a subprogram, a collection parameter assumes the properties of the argument bound to it. So, you can apply methods FIRST, LAST, COUNT, and so on to such parameters. For varray parameters, the value of LIMIT is always derived from the parameter type definition, regardless of the parameter mode.
Examples
In the following example, you use NEXT to traverse a nested table from which some elements have been deleted:
i := courses.FIRST; -- get subscript of first element
WHILE i IS NOT NULL LOOP
-- do something with courses(i)
i := courses.NEXT(i); -- get subscript of next element
END LOOP;
In the following example, PL/SQL executes the assignment statement only if element i exists:
IF courses.EXISTS(i) THEN
courses(i) := new_course;
END IF;
The next example shows that you can use FIRST and LAST to specify the lower and upper bounds of a loop range provided each element in that range exists:
FOR i IN courses.FIRST..courses.LAST LOOP ...
In the following example, you delete elements 2 through 5 from a nested table:
courses.DELETE(2, 5);
In the final example, you use LIMIT to determine if you can add 20 more elements to varray projects:
IF (projects.COUNT + 20) < projects.LIMIT THEN
-- add 20 more elements
Related Topics
Collections, Functions, Procedures
http://download-west.oracle.com/docs/cd/B10501_01/appdev.920/a96624/13_elems7.htm#33054
Joel P�rez

Confusion about get/set method not working

Hi
Hopefully someone can point out the elementary mistake I have made in my code. I have created a get/set method to hold a value"total" so that I can then get it to display it further down my code in an HTML page. I am setting the value as I can check this by printing it out (line 102) but when I try to use it again it displays 0.0. What have I done wrong?
class ReportListener implements ActionListener
     Context context;
     ResultSet resultAll;
     ResultSet resultTotal;
     JFrame frame;
     int daysInMonth;
     int i;
     DisplayCurrencyOnBills d;
     DateFormatSymbols symbols;
     String[] newWeekday;
     Date theDate;
     String date;
     ReportListener (Context theContext)
          context = theContext;
     public void actionPerformed(ActionEvent e)
       try
          printWeeklyReport();
          //countDaysInMonth();
          getReportMoneyTotal();
     catch (SQLException s)
               s.printStackTrace();
     public void countDaysInMonth()
     public void getReportMoneyTotal() throws SQLException
          Calendar todayTotal =Calendar.getInstance() ;
           SimpleDateFormat reportDateFormat = new SimpleDateFormat("dd MM yyyy");
          PreparedStatement preparedT =context.getConnection().prepareStatement(
               "SELECT Sum(tblSession.Fee) AS Total, Count(tblBooking.BookingID) AS CountOfBookingID FROM tblSession INNER JOIN "+
               "(tblBooking INNER JOIN tblCustomer_Booking ON tblBooking.BookingID = tblCustomer_Booking.BookingID) ON tblSession.SessionID = tblBooking.SessionID "+
               "WHERE (((tblBooking.EventDate)>DateAdd('m',-1,#"+reportDateFormat.format(todayTotal.getTime())+"#)) AND ((tblSession.Session)='Morning' Or (tblSession.Session)='Evening')) OR (((tblSession.Session)='Afternoon') AND ((tblBooking.Extension)=Yes))"
          ResultSet resultTotal =preparedT.executeQuery();
          resultTotal.next();
          double total =resultTotal.getDouble("Total");
          context.setReportIncomeTotal(total);
          System.out.println("Line 102 "+context.getReportIncomeTotal());
          preparedT.close();
     public void printWeeklyReport() throws SQLException
          Calendar today =Calendar.getInstance() ;
           SimpleDateFormat reportDateFormat = new SimpleDateFormat("dd MM yyyy");
          PreparedStatement prepared =context.getConnection().prepareStatement(
               "SELECT tblBooking.EventDate, tblSession.Session, tblBooking.Extension, tblSession.Fee, Count(tblBooking.BookingID) AS CountOfBookingID "+
               "FROM tblSession INNER JOIN (tblBooking INNER JOIN tblCustomer_Booking ON tblBooking.BookingID = tblCustomer_Booking.BookingID) ON "+
               "tblSession.SessionID = tblBooking.SessionID GROUP BY tblBooking.EventDate, tblSession.Session, tblBooking.Extension, tblSession.Fee "+
               "HAVING (((tblBooking.EventDate)>DateAdd('m',-1,#"+reportDateFormat.format(today.getTime())+"#)) AND ((tblSession.Session)='Morning' Or "+
               "(tblSession.Session)='Evening')) OR (((tblSession.Session)='Afternoon') AND ((tblBooking.Extension)=Yes))"
          ResultSet resultAll =prepared.executeQuery();
          resultAll.next();
          System.out.println("Line 123 "+context.getReportIncomeTotal());
                    PrintWriter printWriter;
                    try
                         JFileChooser fc=new JFileChooser();
                         int returnVal = fc.showSaveDialog(frame);
                         if (returnVal != JFileChooser.APPROVE_OPTION)
                              return;
                         FileOutputStream outputStream=
                              new FileOutputStream(fc.getSelectedFile());
                         OutputStreamWriter writer=
                              new OutputStreamWriter(outputStream,"UTF-8");
                         printWriter=new PrintWriter(writer);
                       printWriter.println("<html><meta http-equiv='Content-Type' content='text/html; charset=UTF-8'><body><h1>Monthly Usage Statistics</h1>");
                       printWriter.println("<table width='100%' border='1'><tr><td width='100%' colspan='8'><h2 align='center'>Monthly Summary</h2></td></tr>");
                     System.out.println("Line 152 "+context.getReportIncomeTotal());
                     int count = 0;
                         while ( resultAll.next() )
                          count++;
                          String session = resultAll.getString("Session");
                          Double fee= resultAll.getDouble("Fee");
                       // display currency correctly
                     //double d=Double.parseDouble(fee);
                     Locale locale = new Locale("GBP");
                     NumberFormat gbpFormat = NumberFormat.getCurrencyInstance(locale);
                         symbols = new DateFormatSymbols(new Locale("en"));
                     newWeekday =symbols.getWeekdays();
                         SimpleDateFormat formatter = new SimpleDateFormat("EEEE",symbols);
                         Date theEventDate = new Date();
                         theEventDate=resultAll.getDate("EventDate");
                         date = formatter.format(theEventDate);
                         // set date for Usage Report
                         Calendar reportDate = Calendar.getInstance();
                         Calendar reportToday =Calendar.getInstance();
                         reportDate.add(Calendar.MONTH,-1);
                         SimpleDateFormat reportFormat = new SimpleDateFormat("EEEE ,dd MMM yyy");
                         //setDecimalFormat for report total
                         DecimalFormat decFormat = new DecimalFormat(".##");
                         printWriter.println(
                         "<tr><td width='100%' colspan='8'>For month from "+reportFormat.format(reportDate.getTime())+" to "+reportFormat.format(reportToday.getTime())+"</td></tr><tr><td width='100%' colspan='8'>Total amount of income from occasional bookings "+decFormat.format(context.getReportIncomeTotal())+"</td>"+
                         "</tr><tr><td width='100%' colspan='8'>Percentage use for all bookings</td></tr><tr><td width='8%'></td><td width='8%'>MON</td><td width='9%'>TUES</td>"+
                        "<td width='9%'>WEDS</td><td width='9%'>THURS</td><td width='9%'>FRI</td><td width='9%'>SAT</td><td width='9%'>SUN</td></tr><tr><td width='8%'>AM</td><td width='8%'></td>"+
                        "<td width='9%'></td><td width='9%'></td><td width='9%'></td><td width='9%'></td><td width='9%'></td><td width='9%'></td></tr><tr><td width='8%'>PM</td><td width='8%'></td>"+
                        "<td width='9%'></td><td width='9%'></td><td width='9%'></td><td width='9%'></td><td width='9%'></td><td width='9%'></td></tr><tr><td width='8%'>EVE</td><td width='8%'></td>"+
                        "<td width='9%'></td><td width='9%'></td><td width='9%'></td><td width='9%'></td><td width='9%'></td><td width='9%'></td></tr>"
                         System.out.println(count);
                         printWriter.println("</table>");
                         printWriter.println("</body></html>");
                         printWriter.close();
                         prepared.close();
                         JDialog reportDialog=new JDialog(frame);
                         reportDialog.setSize(800,600);
                         JEditorPane editorPane=new JEditorPane(fc.getSelectedFile().toURL());
                         editorPane.setContentType("text/html; charset=UTF-8");
                         reportDialog.getContentPane().add(editorPane);
                         reportDialog.setVisible(true);
                    catch (IOException exception)
                         exception.printStackTrace();
     This code finds data from a database(this works as it also prints a report). Here is the extraxt of my get/set method which is located in a "context" class.
public void setReportIncomeTotal(double total)
          this.total=total;
     public double getReportIncomeTotal()
          return total;
     }I'd be grateful for any help.

but when I try to use it again it displays 0.0This seems to mean that either the value has been reset or you are calling the method on another (new) ReportListener.
It's hard to say, as you didn't provide us with the code sample that illustrate the corresponding scenario (did you?.)
Note that I didn't get into details, but I just noticed that your actionPerformed method first print weekly report, and then get the money total. (Shouldn't it be the opposite order?)

Missing method body or declare abstract error

Hi!
I have been working on this simple Java 1.3.1 program for three days now and cannot figure out what I am doing wrong. If anyone has done the "Building an Application" tutorial in the New to Java Programming Center, you might recognize the code. I am trying to set up a frame with panels first using the BorderLayout and then the FlowLayout within each section of the BorderLayout. It will have textfields and checkboxes. I am working on the code to retrieve the user input from the text boxes and also to determine which checkbox the user has checked. Here is my code: (ignore my irrelivent comments!)
import java.awt.*;
import javax.swing.*;
import java.io.*;
import java.awt.event.*;
import java.awt.Color.*;
import java.awt.Image.*;
//Header Comment for a Routine/Method
//This method gathers the input text supplied by the user from five text fields on the Current
//Purchase tab of the tabbed pane of the MPGLog.java program. The way it gathers the text
//depends on the current processing state, which it retrieves on its own. It saves the text to
//a text file called textinput.txt.
public class CollectTextInput extends JPanel implements ActionListener
{ // Begin class
     //Declare all the objects needed first.
     // These are the text fields
     private JTextField currentMileage;
     private JTextField numofGallonsBought;
     private JTextField dateofPurchase;
     private JTextField pricePerGallon;
     private JTextField gasBrand;
     // Declaring the Labels to go with each TextField
     private JLabel lblcurrentMileage;
     private JLabel lblnumofGallonsBought;
     private JLabel lbldateofPurchase;
     private JLabel lblpricePerGallon;
     private JLabel lblgasBrand;
     // Declaring the Checkboxes for the types of gas bought
     private JCheckBox chbxReg;
     private JCheckBox chbxSuper;
     private JCheckBox chbxUltra;
     private JCheckBox chbxOther;
     private JCheckBox chbxHigher;
     private JCheckBox chbxLower;
     // Declaring the Buttons and images needed
     private JButton enter;
     private JButton edit;
     //private JButton report; //Will be used later
     private JLabel bluecar;          //Used with the ImageIcon to create CRV image
     private JPanel carimage;     //Used in buildImagePanel method
     private JPanel datum;          //Used in buildDatumPanel method
     private JPanel gasgrade;     //Used in buildGasTypePanel method.
     //Declaring the Panels that need to be built and added
     //to the border layout of this panel.
     //private JPanel panlimages;
     //private JPanel panltextinputs;
     //private JPanel panlchkBoxes;
     // Class to handle functionality of checkboxes
     ItemListener handler = new CheckBoxHandler();
     // This is where you add the constructor for the class - I THINK!!
     public CollectTextInput()
     { // Opens collectTextInput constructor
          // Must set layout for collectTextInput here
          // Choosing a BorderLayout because we simply want to
          // add panels to the North, Center and South borders, which, by
          // default, will fill the layout with the three panels
          // we are creating
          setLayout(new BorderLayout());
          //Initialize the objects in the constructor of the class.
          //Initialize the textfields
          currentMileage = new JTextField();
          numofGallonsBought = new JTextField();
          dateofPurchase = new JTextField();
          pricePerGallon = new JTextField();
          gasBrand = new JTextField();
          // Initialize the labels that go with each TextField
          lblcurrentMileage = new JLabel("Enter the mileage at the time of gas purchase: ");
          lblnumofGallonsBought = new JLabel("Enter the number of gallons of gas bought: ");
          lbldateofPurchase = new JLabel("Enter the date of the purchase: ");
          lblpricePerGallon = new JLabel("Enter the price per gallon you paid for the gas: ");
          lblgasBrand = new JLabel("Enter the brand name of the gas: ");
          //Initialize the labels for the checkboxes.
          chbxReg = new JCheckBox("Regular ", true);
          chbxSuper = new JCheckBox("Super ");
          chbxUltra = new JCheckBox("Ultra ");
          chbxOther = new JCheckBox("Other: (Choose one from below) ");
          chbxHigher = new JCheckBox("Higher than Ultra ");
          chbxLower = new JCheckBox("Lower than Ultra ");
          //Initialize the buttons that go on the panel.
          enter = new JButton("Save Data");
          edit = new JButton("Edit Data");
          //Initialize the image that oges on the panel.
          bluecar = new JLabel("2002 Honda CR-V", new ImageIcon("CRVBlue.jpg"),JLabel.CENTER);
          // Now bring it all together by calling the other methods
          // that build the other panels and menu.
          buildImagePanel();
          buildDatumPanel();
          buildGasTypePanel();
          // Once the methods above build the panels, this call to add
          // them will add the panels to the main panel's border
          // layout manager.
          add(datum, BorderLayout.NORTH);
          add(carimage, BorderLayout.EAST);
          add(gasgrade, BorderLayout.CENTER);
     } // Ends the constructor.
        // This method creates a panel called images that holds the car image.
     public void buildImagePanel();
     { // Opens buildImagePanel.
          // First, create the Panel
          carimage = new JPanel();
          //Second, set the color and layout.
          carimage.setBackground(Color.white);
          carimage.setLayout(new FlowLayout());
          // Third, add the image to the panel.
          carimage.add(bluecar);
     }// Closes buildImagePanel
     //This method creates a panel called datum that holds the text input.
     public void buildDatumPanel();
     { //Opens buildDatumPanel
          // First, create the Panel.
          datum = new JPanel();
          //Second, set the background color and layout.
          datum.setBackground(Color.white);
          datum.setLayout(new GridLayout(2, 4, 20, 20));
          //Third, add the textfields and text labels to the panel.
          datum.add(lblcurrentMileage);
          datum.add(currentMileage);
          datum.add(lblnumofGallonsBought);
          datum.add(numofGallonsBought);
          datum.add(lbldateofPurchase);
          datum.add(dateofPurchase);
          datum.add(lblpricePerGallon);
          datum.add(pricePerGallon);
          datum.add(lblgasBrand);
          datum.add(gasBrand);
          //Optionally - Fourth -set a border around the panel, including
          // a title.
          datum.setBorder(BorderFactory.createTitledBorder("Per Purchase Information"));
          //Fifth - Add listeners to each text field to be able to
          // know when data is input into them.
          currentMileage.addActionListener(this);
          numofGallonsBought.addActionListener(this);
          dateofPurchase.addActionListener(this);
          pricePerGallon.addActionListener(this);
          gasBrand.addActionListener(this);
     }// Closes buildDatumPanel
     // This method builds a panel called gasTypePanel that holds the checkboxes.
     public void buildGasTypePanel()
     { // Opens buildGasTypePanel method
          // First, create the panel.
          gasgrade = new JPanel();
          // Second, set its background color and its layout.
          gasgrade.setBackground(Color.white);
          gasgrade.setLayout(new GridLayout(5, 1, 10, 20));
          // Third, add all the checkboxes to the panel.
          gasgrade.add(chbxReg);
          gasgrade.add(chbxSuper);
          gasgrade.add(chbxUltra);
          gasgrade.add(chbxOther);
          gasgrade.add(chbxHigher);
          gasgrade.add(chbxLower);
          //Optionally, - Fourth - set a border around the panel, including
          // a title.
          gasgrade.setBorder(BorderFactory.createTitledBorder("Gas Type Information"));
          // Fifth - CheckBoxes require a CheckBox Handler.
          // This is a method created separately
          // outside of the method where the checkboxes are added to
          // the panel or where the checkboxes are even created.
          // This method (CheckBox Handler) implements and ItemListener
          // and is a self-contained method all on its own. See
          // the CheckBox Handler methods following the
          // actionPerformed method which follows.-SLM
     } // Closes the buildGasTypePanel method
// Create the functionality to capture and react to an event
//   for the checkboxes when they are checked by the user and
//   the text fields to know when text is entered. Also to react to the
//   Enter button being pushed and the edit button being pushed.
public void actionPerformed(ActionEvent evt)
{ // Opens actionPerformed method.
     if((evt.getSource() == currentMileage) || (evt.getSource() == enter))
          { // Opens if statement.
            // Retrieves the text from the currentMileage text field
            // and assigns it to the variable currentMileageText of
            // type String.
            String currentMileageText = currentMileage.getText();
            lblcurrentMileage.setText("Current Mileage is:    " + currentMileageText);
            // After printing text to JLabel, hide the text field.
            currentMileage.setVisible(false);
       } // Ends if statement.
      if((evt.getSource() == numofGallonsBought) || (evt.getSource() == enter))
          { // Opens if statement.
            // Retrieves the text from the numofGallonsBought text field
            // and assigns it to the variable numofGallonsBoughtText of
            // type String.
            String numofGallonsBoughtText = numofGallonsBought.getText();
            lblnumofGallonsBought.setText("The number of gallons of gas bought is:    " + numofGallonsBoughtText);
            // After printing text to JLabel, hide the text field.
            numofGallonsBought.setVisible(false);
       } // Ends if statement.
       if((evt.getSource() == dateofPurchase) || (evt.getSource() == enter))
                 { // Opens if statement.
                   // Retrieves the text from the dateofPurchase text field
                   // and assigns it to the variable dateofPurchaseText of
                   // type String.
                   String dateofPurchaseText = dateofPurchase.getText();
                   lbldateofPurchase.setText("The date of this purchase is:    " + dateofPurchaseText);
                   // After printing text to JLabel, hide the text field.
                   dateofPurchase.setVisible(false);
       } // Ends if statement.
       if((evt.getSource() == pricePerGallon) || (evt.getSource() == enter))
                        { // Opens if statement.
                          // Retrieves the text from the pricePerGallon text field
                          // and assigns it to the variable pricePerGallonText of
                          // type String.
                          String pricePerGallonText = pricePerGallon.getText();
                          lblpricePerGallon.setText("The price per gallon of gas for this purchase is:    " + pricePerGallonText);
                          // After printing text to JLabel, hide the text field.
                          pricePerGallon.setVisible(false);
       } // Ends if statement.
       if((evt.getSource() == gasBrand) || (evt.getSource() == enter))
                   { // Opens if statement.
                     // Retrieves the text from the gasBrand text field
                     // and assigns it to the variable gasBrandText of
                     // type String.
                     String gasBrandText = gasBrand.getText();
                     lblgasBrand.setText("The Brand of gas for this purchase is:    " + gasBrandText);
                     // After printing text to JLabel, hide the text field.
                     gasBrand.setVisible(false);
       } // Ends if statement.
       // This provides control statements for the Edit button. If the
       // Edit button is clicked, then the text fields are visible again.
       if(evt.getSource() == edit)
       { // Opens if statement.
         // If the edit button is pressed, the following are set to
         // visible.
            currentMileage.setVisible(true);
            numofGallonsBought.setVisible(true);
            dateofPurchase.setVisible(true);
            pricePerGallon.setVisible(true);
            gasBrand.setVisible(true);
     }// Closes if statement.
} // Closes actionPerformed method.
     private class CheckBoxHandler implements ItemListener
     { // Opens inner class
          public void itemStateChanged (ItemEvent e)
          {// Opens the itemStateChanged method.
               JCheckBox source = (JCheckBox) e.getSource();
                    if(e.getStateChange() == ItemEvent.SELECTED)
                         source.setForeground(Color.blue);
                    else
                         source.setForeground(Color.black);
                    }// Closes the itemStateChanged method
               }// Closes the CheckBoxHandler class.
} //Ends the public class collectTextInput classThe error I keep receiving is as follows:
C:\jdk131\CollectTextInput.java:128: missing method body, or declare abstract
     public void buildImagePanel();
^
C:\jdk131\CollectTextInput.java:142: missing method body, or declare abstract
     public void buildDatumPanel();
^
2 errors
I have looked this error up in three different places but the solutions do not apply to what I am trying to accomplish.
Any help would be greatly appreciated!! Thanks!
Susan

C:\jdk131\CollectTextInput.java:128: missing methodbody, or declare ?abstract
public void buildImagePanel();^
C:\jdk131\CollectTextInput.java:142: missing methodbody, or declare abstract
public void buildDatumPanel();Just remove the semicolons.
Geesh! If I had a hammer I would be hitting myself over the head with it right now!!! What an obviously DUMB newbie mistake!!!
Thanks so much for not making me feel stupid! :-)
Susan

Method first() JDBC

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