Recent changes to bugs

Code128 generate wrong output for Carriage Return character

spynet71 — Fri, 10 Sep 2010 10:08:53 -0000

From a simple example

import java.io.*;
import javax.imageio.*;
import java.awt.image.*;

import net.sourceforge.jbarcodebean.*;
import net.sourceforge.jbarcodebean.model.*;

public class Main {
public Main() {
}

public static void main(String[] args) {
Code128 bar = new Code128();

JBarcodeBean bean = new JBarcodeBean("|A\rB\nC", bar);

bean.setShowText(true);
BufferedImage image = new BufferedImage(400, 100, BufferedImage.TYPE_INT_ARGB);
bean.draw(image);

try {
ImageIO.write(image, "png", new File("c:/result.png"));
} catch (IOException e) {
e.printStackTrace();
}
}
}

Then I print and scan a barcode that has been generated
I get the result

"|A109B106C"

So I work around with your sourcecode then I think the fault come from java source file Code128.java

http://jbarcodebean.svn.sourceforge.net/viewvc/jbarcodebean/branches/maven/jbarcodebean/src/main/java/net/sourceforge/jbarcodebean/model/Code128.java?revision=55&view=markup

At method preprocess(String text) line 359

preprocessed += (c1 + '`');

If the character is '\r' the preprocessed value after this line will be a preprocessed concatenate with "109"
I changed that sourcecode to

preprocessed += (char)(c1 + '`');

and debug it
The value of preprocessed after line 359 is preprocessed concatenate with "m"
Then I print a barcode and then scan it again
I get the result

|A
B
C

I must use '\r' because it's barcode printing format from the bank
I'm not sure what I do is a correct way
Please correct me if wrong.

Can you fix this bug?

v.1.2.0 is not loaded as a bean in Servoy

Anonymous — Sat, 10 Apr 2010 19:00:30 -0000

Hi!

With version 1.1.5, JBarcodeBean is loaded as a Bean in Servoy Developer (Eclipse), and it works properly. But last version (1.2.0) is not recognized as a bean, then not loaded.

Tip; this version is not marked as a bean in Manifest file.

Best regards,

Gerardo.

null poiner exception while making GIF

Anonymous — Sun, 09 Dec 2007 06:47:57 -0000

when runing Demo.jar and clicking on "Make GIF" i get the folowing error on the concole.

java.lang.NullPointerException
at java.awt.geom.Area.<init>(Area.java:52)
at jbarcodebean.JBarcodeBean.doPaint(Unknown Source)
at jbarcodebean.JBarcodeBean.gifEncode(Unknown Source)
at JavaBarCode.gifButton_actionPerformed(JavaBarCode.java:128)
at JavaBarCode$4.actionPerformed(JavaBarCode.java:95)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1445)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1499)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:373)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:245)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:211)
at java.awt.Component.processMouseEvent(Component.java:3710)
at java.awt.Component.processEvent(Component.java:3539)
at java.awt.Container.processEvent(Container.java:1159)
at java.awt.Component.dispatchEventImpl(Component.java:2588)
at java.awt.Container.dispatchEventImpl(Container.java:1208)
at java.awt.Component.dispatchEvent(Component.java:2492)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:2446)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2211)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2120)
at java.awt.Container.dispatchEventImpl(Container.java:1195)
at java.awt.Window.dispatchEventImpl(Window.java:921)
at java.awt.Component.dispatchEvent(Component.java:2492)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:334)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:126)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:88)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:80)

has this been solved in any future releases?
i am running using jdk131.
my email id is nivgeo@yahoo.com...
plese respond at the earliest.

NullPointer exception when running demo

Grymoire — Thu, 11 Oct 2007 17:03:45 -0000

When running "java -jar Demo.jar" I click "Output GIF", type in a filename and press "Save". I get
"Error writing GIF file".
with a Null Pointer exception.
I get this with build 1.6.0_03-b05 and
gij (GNU libgcj) version 4.1.2 20070626 (Red Hat 4.1.2-13)

The problem seems to be caused by
Area areaNewClip=new Area(newClip);
in JBarcodeBean.java

One minor suggestion, in Demo.java, change

} catch (Exception ex) {
JOptionPane.showMessageDialog(this, "Error writing GIF file", "Error", JOptionPane.ERROR_MESSAGE);
}

to
} catch (Exception ex) {
ex.printStackTrace();
JOptionPane.showMessageDialog(this, "Error writing GIF file: " + ex, "Error", JOptionPane.ERROR_MESSAGE);
}

unnecessary exception thrown JBarcodeBean.setCheckDigit

Matthias Hanisch — Tue, 18 Oct 2005 12:17:45 -0000

When calling JBarcodeBean.setCheckDigit() it is
possible to get a BarcodeException. This is the case if

a) the current codeType has always a
checksum(BarcodeStrategy.MANDATORY_CHECKSUM) and you
want to call setCheckDigit(false), or

b) the current codeType has no
checksum(BarcodeStrategy.NO_CHECKSUM) and you want to
call setCheckDigit(true)

In both cases you get a BarcodeException. We think the
behaviour and signature of setCheckDigit should be
changed to

a) not throw a BarcodeException anymore, and

b) ignore setCheckDigit(false) for a codeType with
BarcodeStrategy.MANDATORY_CHECKSUM and
setCheckDigit(true) for a codeType with
BarcodeStrategy.NO_CHECKSUM

We currently had a propery editor where you could
change all properties of the JBarcodeBeand in a JTable
and save them. If you now had a codeType with
BarcodeStrategy.NO_CHECKSUM and checkDigit "false" and
then changed the codeType to one having
BarcodeStrategy.MANDATORY_CHECKSUM then we get an error
that checkDigit can't be set to "false".

We think that not throwing the BarcodeException would
be a better solution as no other set-method of
JBarcodeBean throws an Exception either. It is also
understandable that a try to set a checkDigit to a
codeType having no checksum and a try to disable the
checksum for a codeType where checksum is mandatory
will be ignored.
We also guess that the thrown Exception will currently
be catched anyway and ignored.

JBarcodeBeanBeanInfo.getIcon

Volker Berlin — Fri, 22 Jul 2005 14:58:49 -0000

The method JBarcodeBeanBeanInfo.getIcon does not work.
I think the cause is that the names of the images in
source code and in the jar file are differently.

Volker

Clip is ignored on painting

Volker Berlin — Fri, 22 Jul 2005 14:37:25 -0000

The background is printing correct in the clipping. The
Barcode self is printing over the border of the parent
component.

The problem is in class JBarcodeBean in method doPaint.

The follow line:

g.setClip(insets.left, insets.top,
d.width - insets.left - insets.right, d.height -
insets.top - insets.bottom);

does not consider the setting clip. The current clip
and the new clip must be merge. Currently it print over
the border of a scroll pane.

Volker