[OT] RE: Can't generate class file from Interface

2008-08-26 Thread Peter Crowther 
This is not a Tomcat question.  Please find a more appropriate list.

- Peter

 -Original Message-
 From: sam wun [mailto:[EMAIL PROTECTED]
 Sent: 26 August 2008 13:03
 To: Tomcat Users List
 Subject: Can't generate class file from Interface

 Hi,



 In Eclipse 3.4 (not sure about the previous version), I have
 a project, in
 the src, there is a interface file called
 DatabaseCommand.java. This file
 is an interface file.

 It s content is shown below:

 package command;

 import java.sql.Connection;
 import java.sql.SQLException;

 public interface DatabaseCommand {
 public Object executeDatabaseOperation(Connection conn) throws
 SQLException ;
 }





 Another file CreateOrder.java *implements* this interface.

 Its content shown as below:



 Package command;

 import java.sql.Connection;
 import java.sql.SQLException;
 import java.sql.Statement;
 import java.sql.ResultSet;
 import java.util.ArrayList;
 import domain.Customer;

 /**
  * List existing customers in the database
  */

 public class ListCustomers implements DatabaseCommand {

 public Object executeDatabaseOperation(Connection conn) throws
 SQLException {
 // List customers in the database

 ArrayListCustomer list = new ArrayListCustomer();
 Statement sta = conn.createStatement();
 ResultSet rs = sta.executeQuery(SELECT ID, FIRST_NAME,
 LAST_NAME, ADDRESS FROM CUSTOMER);
 while(rs.next()) {
 Customer cust = new Customer();
 cust.setId(rs.getInt(1));
 cust.setFirstName(rs.getString(2));
 cust.setLastName(rs.getString(3));
 cust.setAddress(rs.getString(4));
 list.add(cust);
 }

 rs.close();
 sta.close();

 return list;
 }
 }



 When I press Clt-B to build the project(All),
 DatabaseCommand.java does not
 get compiled, no DatabaseCommand.class generated in the
 build\classes\command\ directory. The syntax highlithed in the
 CreateOrder.java file indicated that DatabaseCommand is an
 unknown type,
 that meant no class found.



 How can I get around this issue? may be I should ask how to
 generate an
 interface dot class file (eg. DatabaseCommand.class in this instance)?



 Thanks

 Sam




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Re: Can't generate class file from Interface

2008-08-26 Thread Ch Praveena 
Hi,

   Make sure about all the classes like Customer, be accessable. And also be
careful in naming the packages.



2008/8/26 sam wun [EMAIL PROTECTED]

 Hi,



 In Eclipse 3.4 (not sure about the previous version), I have a project, in
 the src, there is a interface file called DatabaseCommand.java. This file
 is an interface file.

 It s content is shown below:

 package command;

 import java.sql.Connection;
 import java.sql.SQLException;

 public interface DatabaseCommand {
 public Object executeDatabaseOperation(Connection conn) throws
 SQLException ;
 }





 Another file CreateOrder.java *implements* this interface.

 Its content shown as below:



 Package command;

 import java.sql.Connection;
 import java.sql.SQLException;
 import java.sql.Statement;
 import java.sql.ResultSet;
 import java.util.ArrayList;
 import domain.Customer;

 /**
  * List existing customers in the database
  */

 public class ListCustomers implements DatabaseCommand {

 public Object executeDatabaseOperation(Connection conn) throws
 SQLException {
 // List customers in the database

 ArrayListCustomer list = new ArrayListCustomer();
 Statement sta = conn.createStatement();
 ResultSet rs = sta.executeQuery(SELECT ID, FIRST_NAME,
 LAST_NAME, ADDRESS FROM CUSTOMER);
 while(rs.next()) {
 Customer cust = new Customer();
 cust.setId(rs.getInt(1));
 cust.setFirstName(rs.getString(2));
 cust.setLastName(rs.getString(3));
 cust.setAddress(rs.getString(4));
 list.add(cust);
 }

 rs.close();
 sta.close();

 return list;
 }
 }



 When I press Clt-B to build the project(All), DatabaseCommand.java does not
 get compiled, no DatabaseCommand.class generated in the
 build\classes\command\ directory. The syntax highlithed in the
 CreateOrder.java file indicated that DatabaseCommand is an unknown type,
 that meant no class found.



 How can I get around this issue? may be I should ask how to generate an
 interface dot class file (eg. DatabaseCommand.class in this instance)?



 Thanks

 Sam





-- 

-Coolest Regards,

Praveena Chalamcharla,

Re: Can't generate class file from Interface

2008-08-26 Thread Johnny Kewl 


- Original Message - 
From: sam wun [EMAIL PROTECTED]

To: Tomcat Users List users@tomcat.apache.org
Sent: Tuesday, August 26, 2008 2:02 PM
Subject: Can't generate class file from Interface



Hi,



In Eclipse 3.4 (not sure about the previous version), I have a project, in
the src, there is a interface file called DatabaseCommand.java. This 
file

is an interface file.

It s content is shown below:

package command;

import java.sql.Connection;
import java.sql.SQLException;

public interface DatabaseCommand {
public Object executeDatabaseOperation(Connection conn) throws
SQLException ;
}





Another file CreateOrder.java *implements* this interface.

Its content shown as below:



Package command;

 NOT A KEY WORD 
So they not in the same package, so there is no import 
command.DatabaseCommand, so its unhappy ;)

Not really a tomcat thing... but we friendly ;)



import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.ResultSet;
import java.util.ArrayList;
import domain.Customer;

/**
* List existing customers in the database
*/

public class ListCustomers implements DatabaseCommand {

public Object executeDatabaseOperation(Connection conn) throws
SQLException {
// List customers in the database

ArrayListCustomer list = new ArrayListCustomer();
Statement sta = conn.createStatement();
ResultSet rs = sta.executeQuery(SELECT ID, FIRST_NAME,
LAST_NAME, ADDRESS FROM CUSTOMER);
while(rs.next()) {
Customer cust = new Customer();
cust.setId(rs.getInt(1));
cust.setFirstName(rs.getString(2));
cust.setLastName(rs.getString(3));
cust.setAddress(rs.getString(4));
list.add(cust);
}

rs.close();
sta.close();

return list;
}
}



When I press Clt-B to build the project(All), DatabaseCommand.java does 
not

get compiled, no DatabaseCommand.class generated in the
build\classes\command\ directory. The syntax highlithed in the
CreateOrder.java file indicated that DatabaseCommand is an unknown type,
that meant no class found.



How can I get around this issue? may be I should ask how to generate an
interface dot class file (eg. DatabaseCommand.class in this instance)?



Thanks

Sam

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RE: Can't generate class file from Interface

2008-08-26 Thread Martin Gainty 

you need to use Eclipse import to import the package
right click on project 
click Import
click File System

Martin 
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 Date: Tue, 26 Aug 2008 14:02:59 +0200
 From: [EMAIL PROTECTED]
 Subject: Can't generate class file from Interface
 To: users@tomcat.apache.org
 
 Hi,
 
 
 
 In Eclipse 3.4 (not sure about the previous version), I have a project, in 
 the src, there is a interface file called DatabaseCommand.java. This file 
 is an interface file.
 
 It s content is shown below:
 
 package command;
 
 import java.sql.Connection;
 import java.sql.SQLException;
 
 public interface DatabaseCommand {
 public Object executeDatabaseOperation(Connection conn) throws 
 SQLException ;
 }
 
 
 
 
 
 Another file CreateOrder.java *implements* this interface.
 
 Its content shown as below:
 
 
 
 Package command;
 
 import java.sql.Connection;
 import java.sql.SQLException;
 import java.sql.Statement;
 import java.sql.ResultSet;
 import java.util.ArrayList;
 import domain.Customer;
 
 /**
  * List existing customers in the database
  */
 
 public class ListCustomers implements DatabaseCommand {
 
 public Object executeDatabaseOperation(Connection conn) throws 
 SQLException {
 // List customers in the database
 
 ArrayListCustomer list = new ArrayListCustomer();
 Statement sta = conn.createStatement();
 ResultSet rs = sta.executeQuery(SELECT ID, FIRST_NAME, 
 LAST_NAME, ADDRESS FROM CUSTOMER);
 while(rs.next()) {
 Customer cust = new Customer();
 cust.setId(rs.getInt(1));
 cust.setFirstName(rs.getString(2));
 cust.setLastName(rs.getString(3));
 cust.setAddress(rs.getString(4));
 list.add(cust);
 }
 
 rs.close();
 sta.close();
 
 return list;
 }
 }
 
 
 
 When I press Clt-B to build the project(All), DatabaseCommand.java does not 
 get compiled, no DatabaseCommand.class generated in the 
 build\classes\command\ directory. The syntax highlithed in the 
 CreateOrder.java file indicated that DatabaseCommand is an unknown type, 
 that meant no class found.
 
 
 
 How can I get around this issue? may be I should ask how to generate an 
 interface dot class file (eg. DatabaseCommand.class in this instance)?
 
 
 
 Thanks
 
 Sam
 
 

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Re: Can't generate class file from Interface

2008-08-26 Thread Gregor Schneider 
On Tue, Aug 26, 2008 at 2:02 PM, sam wun [EMAIL PROTECTED] wrote:

 package command;

 Package command;


notice the difference?

cheers

gregor
-- 
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