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yes i did firend

String data(date,day,breakfast,lunch,supper,other expenses and money borrowed) to display on that corresponding field's.

I already created the object for all text field's on the run method then...

I am really sorry about this,Please refer below


interface DataDisplayer{

public void retrieveData();
public void displayData();

}
public class DataManipulatorView implements...

I Have attached two program's as the text format,kindly help me.dont ignore me please

i hope you have seen my attachment.i found the source of exception,they are the text field's of the class DataManipulatorView.

Take a look at the below sample code

public interface...

Please i need help on this issue,i could not understand the problem

This class is DataManipulatorView

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.sql.*;...

Thank you your post is very useful to me

Please reply me

thank you

I have attached two files namely DATAMANIPULATORVIEW and UPDATERVIEW, that am facing the problem

I could not post here as the file is too long.In the line of 272 in DATAMANIPULATORVIEW class and...

you are saying that i might suspect dm or one of the textfield's.

but i have created object for all textfield's then i dont know why null pointer exception is throwing.

I would be thankfull to...

Hi all,
I am creating stand alone application in java

i want to know how to share a particular object for all classes through out project

Thank you

Thank you,but in my project i have two override method called retrieveData() and displayData() implemented by DataManipulatorView.

DataManipulatorView is a class and it has many text fields,i am...

Hi all,

Sorry for very basic question,my question is "ïf i have over ride one method of an interface,can i access the instance variable of the implemented class from the over rided method?
...

Hi all,
I am doing one project called PERSONAL EXPENSES DATABASE,it has a more than 10 modules.some of that MAINLOGIN,DATAMANIPULATORVIEW,UPDATERVIEW,STOREDATA,UPDATER,UPDATERVIEW and so on.
...

Thank you , i will try my level best

Sure,i agree to use USB port to run the motor.but how? and which part in java need to learn for this?

I mean ,the port where we usually connect ear phone to computer.

is it possible to do?

Very very thanks for your replay

Actually i don't have any idea,my mind is blank about that.

(this is the scenario)
Assume that i have one dc motor,one laptop,connecting wires.
am gonna use...

Hai all

I don t know that question is correct or not,but also am asking

can i make a small dc motor to run through java programming language

if any, what are the requirements to do so?
...

thank you.

can you give me the code?

i did not tried anything?

i have no idea.

pls asist me

HI ALL

can anyone pls help me to validate the texfield.
example:

i want the username textfield have to take only string value.
if any one type an integer value,i want to tell error message...

pls help me.i need a solution immediately.
thank you

because Registration is a separate class that extending JPanel. not inside in main frame.
main frame only has login panel.login panel have register button to navigate Registration panel.

And...