Trying to make my own java library need help!

I have been trying to make a java library that will save data in cdf format.
Every time I try to implement code using this library i created i get the error shown below, I put the jar file in the jdk/jre/lib/ext file, so when I import it, it does work. But i dont know know what to do with this error any insight would be greatly appreciated,
Constructor
You are connected to the OSACBM sever...
new.xml has been recieved and unmarshalled
ELEMENT: DAInt:
DAInt value: 34
DAInt id: 2000
Exception in thread "main" java.lang.UnsatisfiedLinkError: no cdfNativeLibrary in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1709)
at java.lang.Runtime.loadLibrary0(Runtime.java:823)
at java.lang.System.loadLibrary(System.java:1028)
at gsfc.nssdc.cdf.CDFNativeLibrary.<clinit>(CDFNativeLibrary.java:47)
at gsfc.nssdc.cdf.CDF.create(CDF.java:221)
at osacbm_client_.CDFHandler.InitializeCDF_File(CDFHandler.java:45)
at osacbm_client_._Client.Unmarshaller(_Client.java:64)
at osacbm_client_._Client.<init>(_Client.java:25)
at osacbm_client_.Main.main(Main.java:19)
Java Result: 1

OK, I checked the javadoc myself, and although the text is clear and correct I acknowledge it doesn't help you a lot to investigate the problem, so I'll try to give out a clue:
-> your problem is that the JVM does find your jar, but doesn't file the native library it depends on (+"cdfNativeLibrary"+).
You should locate the shared library file (+cdfNativeLibrary.dll+ or cdfNativeLibrary.so depending on your OS), and make sure your PATH variable contains its folder, or add this folder to the java.library.path system property (specified as -D java.library.path=<path/to/folder/containing/libfile> in the launching command line).
Note that it's not clear from your message if you're writing the gsfc library or a client of it:
- It the former, and if you're new to Java, then be aware that integrating a native library is not the easiest way to learn Java; just in case, make sure you read and understand a JNI tutorial (for Java Native Interface; I was willing to push you a link, but I realize the [Java tutorial|http://java.sun.com/docs/books/tutorial/] has no such chapter, which reinforces that it is an advanced topic).
- If the latter, then how to install the library's components should be documented in its manual.

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ToolTest.java:3: Package com.bruceeckel.tools not found in import.
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^
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[code]
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Hello all.
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Edited by: orlfman on Apr 9, 2008 5:26 PM

Sorry. I should have stated what I need help with..
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Edited by: orlfman on Apr 10, 2008 12:31 AM

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} while (playerTotal <= 1);
String stop = JOptionPane.showInputDialog
("Would you like to play again? ");
if (stop.equalsIgnoreCase("no"))
break;
if (rounds == 5)
System.out.println("Player wins " +
(CardDeck.rounds - wins) + "rounds");
} while (rounds <= 5);
private Card[] deck;
private int cards;
public static int rounds = 1;
public int cardValue;
/**When I try to compile this nested class, I get an error message saying I need a brace here and at the end of the program. I don't know if any of this code would work because I've tried adding braces and still can't compile it.**/
class Hand()
static int r = 1;
public Hand() { CardDeck.rounds = r; }
public int getRounds() { return r++; }
final class Card
public static final int ACE = 1;
public static final int JACK = 11;
public static final int QUEEN = 12;
public static final int KING = 13;
public static final int CLUBS = 1;
public static final int DIAMONDS = 2;
public static final int HEARTS = 3;
public static final int SPADES = 4;
public Card(int v, int s)
value = v;
suit = s;
public int getValue() { return value; }
public int getSuit() { return suit; }
public int rank()
if (value == 1)
return 4 * 13 + suit;
else
return 4 * (value - 1) + suit;
/**This works, but I'm confused. How is this method called? Does it call itself?**/
public String toString()
String v;
String s;
if (value == ACE)
v = "Ace";
else if (value == JACK)
v = "Jack";
else if (value == QUEEN)
v = "Queen";
else if (value == KING)
v = "King";
else
v = String.valueOf(value);
if (suit == DIAMONDS)
s = "Diamonds";
else if (suit == HEARTS)
s = "Hearts";
else if (suit == SPADES)
s = "Spades";
else
s = "Clubs";
return v + " of " + s;
private int value; //Value is an integer, so how can a
private int suit; //string be assigned to an integer?
}

Thank you so much for offering to help me with this Jamie! When I tried to call change value using:
Card dealer = (d.changeValue());
I get an error message saying:
Incompatible types found: int
required: Card
I had my weekly class last night and the professor cleared up a few things for me, but I've not had time to make all of the necessary changes. I did find out how toString worked, so that's one question out of the way, and he gave us a lot of information for adding another class to generate random numbers.
Again, thank you so much. I really want to learn this but I'm feeling so stupid right now. Any help you can give me about the above error message would be appreciated.

JAVA newby needs help

I am trying to learn JAVA on my own and am stuck on using random numbers. My grandson is having problems in math (he is 7) and I want to create a math quiz that will generate two numbers between 0 and 10 and ask him for the correct answer. I understand the JOptionPane and how to display what I wan it to say (easy) but I do not know how to make the result of the sum of the two randoms be the required user (my grandson) input.
Here is what I have (don't laugh it's a mess):
/* ROMAD, January 21, 2007
* Trying to write a Java program for
* my grandson so he can practice and
* learn how to multiply using two integer numbers*/
package mathTest;
import javax.swing.JOptionPane;
import java.util.*;
public class MathTest_1 {
    public static void main(String[] args) {
        Random randomNumbers = new Random();
        // pick random number values between 0 and 10
        int number1 = 1 + randomNumbers.nextInt(10); // first random number
        int number2 = 1 + randomNumbers.nextInt(10); // second random number
        String response;
        response = JOptionPane.showInputDialog("Enter the maximum number");
     // place random number values here and ask for correct number
        System.out.printf("How much is %d times %d\n", number1, number2);
        // ask player what is the answer
        response = JOptionPane.showInputDialog(null,"How much is %d * %d");
        if (response == null)
            JOptionPane.showMessageDialog(null,
                                          "You must enter a value first");
        else if (response.equals(""))
            JOptionPane.showMessageDialog(null, "Please try again");
            JOptionPane.showMessageDialog(null,
                                          "Great! Would you like to play again?");
        System.exit(0);
}

> Done! I goofed it up but sent out another formatted correctly
It's typically considered good form to continue in the same thread rather than starting a new one. At the very least, you'll want to provide a link to the new thread (as in reply #3), so people aren't answering your question in two different threads.
~

J2me and java card, need help to communicate

we are trying to put together a reader to read smartcards using j2me and we figure that it would be easiest if we could develop it to work with java cards rather than standard smart cards, the problem is we get garbage when we communicate to it, the chip sends us crap, any suggestions what might be wrong, any calls we might be missing, has anyone worked with j2me and java cards or smart cards, any help would be appreciated.
einar

.... reader app and the ME behind it .... smells like mobile ....
First of all - if you want to have one mobile application running on this just make sure that whatever is written in ME can use drivers from the reader chip ....
Workin on the PC is something completely different. There was one good example how to develop one host application in Java provided with the JCOP tools long ago ... I don't know if this is now in the new Eclipse tools.
But - there was a small API provided that can give you good hints what to do - and - once you have it on the reader side - you can easily integrate ME methods with this ...

Trying to make my own java library need help!

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