Helmut Lerch

After some serching I found the answer on my on:

<c:import url="file.xml" var="xml"/>
<x:parse xml="${xml}" var="doc" />
<x:out select="$doc/*[local-name()='root' and namespace-uri()='somenamespace']/*[local-name()='item' and namespace-uri()='somenamespace']" />

Helmut

I am not sure, if I understand your question.

But if you want to import data from an xml file in your jsp Page you can use
for example jstl:

http://java.sun.com/j2ee/1.4/docs/tutorial/doc/JSTL5.html#wp63716
or
http://www.javaranch.com/newsletter/200311/Nov2003Newsletter-JSTL-Excerpt.html

Helmut

Maybe you can post some code to explain where you declare what/want to access what?

Helmut

Hy all,

I have an xml-file with a namespace declaration. For example:

--file.xml--
<?xml version="1.0"?>
<sn:root xmlns:sn="somenamespace"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="somenamespace somenamespace.xsd">
<sn:item>Some Text</sn:item>
</sn:root>

How can I parse and access the content of this file with jsp? The following code produces only an output if I omit the xmlns declaration in "file.xml".

--file.jsp---
<c:import url="file.xml" var="xml"/>
<x :parse xml="${xml}" var="doc" />
<x ut select="$doc/root/item" />

Thanks very much for helping,
Helmut
[ November 07, 2004: Message edited by: Helmut Lerch ]

Originally posted by Mohan K:

char c = 0xffff ; // your input stream
long l = 0x00ff & c ;
System.out.println("l = c & 0x00ff: l = " + l); //255

Thanks nice idea. I will think about it although I have to do the conversation between long and char somtimes twice because I need both bytes separatly.
Eamonn: you can assign 0xFF to a byte without loss its just not "interpreted" as 255, its interpreted as -1. Take a look at the reply of Dave Vick, he explain it very well.
Thanks Heli

Originally posted by Dave Vick:

hope it helps

Thanks for your detailed explanation.
Heli

Hi,

Originally posted by wai meng:
Hi All,
Need some help here... I am returning a date field from an oracle query and it returns in the format:
1958-06-11 00:00:00.0
is there a way in java to convert this into 11/06/1958?
Thanks a million!
Cheers,
Wai Meng

Take a look at SimpleDateFormat.parse(String) and SimpleDateFormat.format(Date).
(http://java.sun.com/j2se/1.4/docs/api/java/text/SimpleDateFormat.html)
Heli

Hi,

Originally posted by Joey Tran:
I need to retrieve value of a final static string in an interface. I don't know the interface name till run time. I cannot load the interface because no class implements the interface. Would you give me some suggestion?
Thanks

I suppose the following code:
<pre>
public interface Inter {
public static String str = "String";
}
public class JustMain {
public static void main(String args[]) {
//retrieving the String
System.out.println(Inter.str);
System.exit(0);
}
}
</pre>
If I supposed wrong forget everything .
Heli

[This message has been edited by Helmut Lerch (edited October 04, 2001).]

Originally posted by Dave Vick:
If I understand correctly you're trying to take the 0xFF value and put it into a byte then later be able to put the byte into a long and get the 0xFF value back out.

Thanks for answering.
The 0xFF value is just an example. It could be any of the other 255 Values of a byte. I am reading a file with read(byte[] b, int off, int len) and I want to put for example two of this bytes in a long. (one in the bits 0 to 7 an the next one in the bits 8 to 15). But I am struggling even with just assigning a byte to a long.

Originally posted by Dave Vick:
All of the other bits are lost and can't be reclaimed, that's why you couldn't convert it back and get the value 255 after turning it into a long.

I thought I don't loose any bits if I assign 0xff to a byte, so conversion back to long should be possible without loss. Am I wrong? A byte has eight bits, 0xff has eight bits set to 1. Of course I just "see" -1 instead of 255 because byte is defined as signed.
Thanks Heli

Hi,

Originally posted by Mikael Jonasson:
Try casting it.
/Mike

some things I have tried:
<pre>
public class AssignByteLong {
public static void main(String[] args) {
byte b = (byte)0xFF;
long l = 0xFF;
System.out.println("b = 0xFF: b = " + b); // -1
System.out.println("l = 0xFF: l = " + l); // 255
l = 0;
l = b;
System.out.println("l = b: l = " + l); // -1
l = 0;
l = (b);
System.out.println("l = (b): l = " + l); // -1
l = 0;
l = ((long)b);
System.out.println("l = ((long)b): l = " + l); // -1
l = 0;
l |= b;
System.out.println("l |= b: l = " + l); // -1
l = 0;
l = (b << 1);<br /> System.out.println("l = (b << 1): l = " + l); //-2<br /> l = 0;<br /> l = (b >> 1);<br /> System.out.println("l = (b >> 1): l = " + l); //-1
l = 0;
l = (b < 0 ? ((b & 0x7F) | 0x80) : b);
System.out.println("l = ((b & 0x7F) | 0x80): l = " + l); //255
}
}
</pre>
So I have a solution but I think there should be a "better", easier one.
Thanks
Heli

Hi,

Originally posted by Uma Viswanathan:
I tried to execute the program...but i am getting ClassCastException.
Exception in thread "main" java.lang.ClassCastException: java.lang.String
at com.sun.java.util.collections.TreeMap.compare(TreeMap.java:994)

Take a look at http://java.sun.com/docs/books/tutorial/collections/problems/index.html.
Heli

[This message has been edited by Helmut Lerch (edited October 02, 2001).]

Hi,
I' m not very used to bit arithmetic. I need to assign a byte to a long.
long l = 0xFF; //255
byte b = 0xFF;
l = b //-1
I know it's something about two's complement and signed/unsigned,
but I don't know how to solve.
Thanks for help
Helmut

Thanks for answering.

Originally posted by Nathan Pruett:
From what I see two things could be wrong...

• img.jpg doesn't really exist where you say it does... Java will try to load your image, but if it's not there, a null image reference will be used with no complaints.
  


-Nate

I thought there will be sure some Exception if this happens.
Again thanks
Heli

Originally posted by Elizabeth Luckose:
Hi
I am working on a chat program. I am appending the messages to a TextArea in an applet. I want to show the messages in different colors as they are appended to the text area. If I call setForeground for the textarea, the messages already appended to the textarea are changed to the new color. How can I prevent this and show only the message that is appended after calling setForeground()be shown in that color? Is there any other way?
Please help...urgent
Thanks,
Elizabeth

Since you mention TextArea I assume you are using AWT. You can't color parts of the Text differently within TextArea. You have to use swing or write your own component.
Heli

Hi,
what am i missing? Assume the following code for displaying an Image in a frame.
<pre>
import java.awt.*;
public class ImageFrame extends FrameWithClose {
Image img;
public ImageFrame() {
img = Toolkit.getDefaultToolkit().getImage("c:\\img.jpg");
}
public void paint(Graphics g) {
g.drawImage(img, 0, 0, this);
}
public static void main(String [] args) {
ImageFrame f = new ImageFrame();
f.setSize(640, 480);
f.repaint();
f.setVisible(true);
}
}
</pre>
But there is nothing displayed. What I am doing wrong.
Thanks for help
Heli