Another Problem with java.lang.NoClassDefFoundError

[Humphrey Bogart]

Hello. I'm working in NetBeans. When I run my project, I get the following error:

"Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: textfiles/ReadFile
at form_control_lession.FormObjects.menuItemOpenActio nPerformed(FormObjects.java: 295) - etc....
....
Caused by: java.lang.ClassNotFoundException: textfiles.ReadFile
at java.net.URLClassLoader$1.run(URLClassLoader.java: 366) etc....."

My program uses this class ReadFile in the textfiles package. The program includes this import statement:

package form_control_lession;

import java.io.IOException;
import javax.swing.filechooser.FileFilter;
import javax.swing.filechooser.FileNameExtensionFilter;
import textfiles.ReadFile;

public class FormObjects extends javax.swing.JFrame {

and further in the program, referencing the ReadFile class:

try {           // displays a text file in the taOne text area.
                ReadFile file_read = new ReadFile(file_name);
                String[] aryLines = file_read.OpenFile();
                String theText = ("");
                int i;
                for (i =0; i < aryLines.length; i++) {
                    theText = theText + aryLines[i] + '\n';
                }
                
                taOne.setText(theText);
            }

If I understand the error messages correctly, java can't find this textfiles.ReadFile class. Can anyone help me fix this?

Thank you.

[Norm]

ClassNotFoundException: textfiles.ReadFile

Where is the definition for the class that is not found? Is the .class file in a folder on disk or in a jar file?
The definition must be available via the classpath so the JVM can find it.

[Humphrey Bogart]

Hello. Thanks for your reply.

All files reside on my computer's C:/ drive - FormObjects (has main method), and ReadFiles (in the package textfiles). None of this are .JAR files. Package textfiles is a folder, and ReadFiles is a class file.

Perhaps I need to include the path to package textfiles in the import statement. I will try that and report back.

Thanks again.

[Humphrey Bogart]

Update: I might have found my problem - which of course exists between my ears!!!

Because this is the second time I have written this program, I have two folders referencing this program. So I have confused which folder I am working in. I will correct this situation and if I am still having problems I will return to the forum with more questions.

Thanks.