JBuilder help

Hey,
I am relatively new to Jbuilder and I�m trying to build a project. On my opening screen I have a startup page. When something is clicked I want the next screen to appear in the same window just changing the frame. I can only succeed in doing this by opening a new window. Please help. Hope my problem is clear.

You need to be specific about what components you are trying to use. Words like "screen", "page", "window" are too vague. Exactly what components are you using?
K.

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Release in JBuilder

Hello!
I would like to ask if there is something like Release configuration (of visual studio) in JBuilder!
Thank you in advance for your time and response!
Athina

Well, in visual studio there is the option of debug
configuration (in compiling, building and running
process)
for testing and correcting your code, and also the
option of relese configuration when you want to run
your
application and get results. The running under
release version is much faster (even 1/3 of debug
version time).That's normal.
So, I was wondering if there is something like that
in JBuilder. I've searched in JBuilder help, but with
no luck :( Did you notice there's a button "run" and a button "debug"? Green arrows to the top. "Release" certainly isn't a normal term for simply running an app.

How to use a progress bar?

Hello to everyone, i am trying to put a progressbar in my application, the progress bar i use is the one that appears in the Swing Component part of JBuilder, i have the next code:
JProgressBar progBar=new JProgressBar();
progBar.setMinimun(10);
when i compile the code the next error occurs:
incorrect method declaration; the return type is missing.
I have looked at the Jbuilder help but the code i find is the same as mine, and in other samples too.

show some more codes....it willl surely help...i just hope the error didn't originate from the minimum() method because it was misspelled...

Use of Swing, will it save time for me??

Hi all
i have worked in java quite a bit. Actually im working on my undergraduate project which involves Java. i have to make a distributed application ( i.e Secure E-voting). Unfortunately i have never worked in Swing or in any GUI toolkit in JAVA. I wanna ask how can i build my project's GUI in a fastest way. I have heard that you can build GUI in JBuilder without even learning about Swing , is that true? if YES THEN How can i start learning JBuilder? Will JBuilder help will be enough to master its drag and drop capabilities?
what other ways u will suggest me.
What is the best way to start with Swing? actually my requirements are to come up with GUI as sooon as possible , building a Nice looking GUI is actually not my requirement, i just wanna come up with GUI of my Servers involved. Plz help me as im almost stuck and thinking deeply what to do Koz i wanna save my precious time as much as i can. i will really appreciate my help as soon as possible. thanks
Take care all
baBye

Thank you for the response, Yvan. I assume I go to Inspector, then Text, then List, then select Bullets & Numbers? Is it possible to go back and retroactively change the format of the document? Or must it be done when starting a new document?

Beginners problems

Hello!
I am a computer science student and I am doing my "special work" with JBuilder8SE and as I am trying to learn RMI and the use of JBuilder, I tried to do the example "Getting Started Using RMI" from the JBuilder Help. I have written all the code etc just as they are in the exaple, but I cannot get my source files compiled. Hello.java compiles just fine, but HelloApplet.java and HelloImpl.java files woun't compile. I get three error messages.
"HelloImpl.java": Error #: 300: class Hello not found in class examples.hello.HelloImpl at line 8 column 63
"HelloApplet.java": Error #: 300: class Hello not found in class examples.hello.HelloApplet at line 14 column 3
"HelloApplet.java": Error #: 300: class Hello not found in class examples.hello.HelloApplet at line 18 column 14
I tried to mend this error by putting the package name in front of the Hello reference (examples.hello.Hello) but as one can guess, I had another compiler error message:
"HelloApplet.java": Error #: 302: cannot access class examples.hello.Hello; java.io.IOException: class not found: class examples.hello.Hello at line 14, column 18
I really don't know what's wrong 'cause I've done everything as it's required in the example. Can you help me please? Give me some suggestions what to do next. How can I write a program of my own if I can't even do the easiest examples?
I hope some one answers me. (And if am in totally wrong place, please tell me where to go for help)

Hi ChrisBoy!
Yes, all my code is in the same package "examples.hello". Here's the code: (it's should be exactly the same as in JBuilder Help)
Hello.java:
package examples.hello;
import java.rmi.Remote;
import java.rmi.RemoteException;
public interface Hello extends Remote {
String sayHello() throws RemoteException;
HelloApplet.java:
package examples.hello;
import java.applet.Applet;
import java.awt.Graphics;
import java.rmi.Naming;
import java.rmi.RemoteException;
public class HelloApplet extends Applet {
String message = "blank";
// "obj" on tunniste, jota k�ytet��n viittaamaan et�olioon,
// joka toteuttaa "Hello" rajapinnan
examples.hello.Hello obj = null;
public void init() {
try{
obj = (examples.hello.Hello)Naming.lookup("//" + getCodeBase().getHost() + "/HelloServer");
message = obj.sayHello();
} catch (Exception e) {
System.out.println("HelloApplet exception: " + e.getMessage());
e.printStackTrace();
public void paint(Graphics g) {
g.drawString(message, 25, 50);
HelloImpl.java:
package examples.hello;
import java.rmi.Naming;
import java.rmi.RemoteException;
import java.rmi.RMISecurityManager;
import java.rmi.server.UnicastRemoteObject;
public class HelloImpl extends UnicastRemoteObject implements examples.hello.Hello {
public HelloImpl() throws RemoteException {
super();
public String sayHello() {
return "Hellou vaan maailma!";
public static void main(String args[]) {
//luo ja aseta security manager
if (System.getSecurityManager() == null) {
System.setSecurityManager(new RMISecurityManager());
try {
HelloImpl obj = new HelloImpl();
// kiinnit� t�m� olioesiintym� nimeen HelloServer
Naming.rebind("//myhost/HelloServer", obj);
System.out.println("HelloServer bound in registry");
} catch (Exception e) {
System.out.println("HelloImpl err: " + e.getMessage());
e.printStackTrace();

Unable to post dataset

I am using a QueryDataSet and i am trying to update a certain row.
the code is:
dataset.editRow();
dataset.updateRow(newRow);
dataset.Post();
dataset.saveChanges();
I can see that the row in the database is updated, but the dataset cannot be posted (it returns false for post()).
What is the problem? Am I missing something?
Please help me with this problem, i am going nuts.
Thanks

From JBuilder Help:
public final boolean post()If a new or existing record is being edited, calling post() force the record to be posted. If this method is called for an unposted row, the row will be posted in the StorageDataSet with a RowStatus of INSERTED. If the sort property is not set, the new row will be positioned at the end of the StorageDataSet. If the sort property is set, the row will be positioned according to the sort property setting. If called for an existing row, the RowStatus for that row is UPDATED, if it does not already have the RowStatus of INSERTED. As with new rows, it will be positioned according to the sort property setting
Whan you call dataset.setInt("columnName", Value); the RowStatus for that row is UPDATED.
Method dataset.updateRow(newRow); post updates automaticaly and RowStatus is not INSERTED or UPDATED

Where can i find this kind of tool ?

Hi,
In JBuilder, its help system is good for searching and index, very easy to use. Use common browser to see Sun JDK Doc (API spec, eg) is not so easy.
In Visaual Age help is also OK.
But everytime, even make a small java file, to use help system, you need open the JBuilder. too slow.
is there any such tool like JBuilder Help system ?
thanks.
Roy

try kawa 3.5 but you must place the api doc of java in the settings of kawa.
Make download the JAVA API doc.
that's all

Urgent!!!! please help!!! problems with visual j++ and jbuilder

Hi,
I have been worried about this problem since a long time. I couldn't get any help figuring out the problem. I am using microsoft visual j++ 6.0
I have tried putting the rt.jar file in the class path but its getting me out of the compilation errors and not this runtime error.
I faced this problem with many codes.
When i used the jbuilder as one of the users suggested, i am getting this compilation errors,
"FloatingAgent.java": Error #: 704 : cannot access directory vrml at line 4, column 4
"FloatingAgent.java": Error #: 704 : cannot access directory vrml\node at line 5, column 4
"FloatingAgent.java": Error #: 704 : cannot access directory vrml\field at line 6, column 4
"FloatingAgent.java": Error #: 300 : class Script not found in class FloatingAgent at line 9, column 39
Please somebody help.
Jagadish.
// an agent is floating randomly.
import java.util.*;
import vrml.*;
import vrml.node.*;
import vrml.field.*;
import java.io.*;
public class FloatingAgent extends Script{
SFVec3f setAgentPosition;
SFRotation setAgentRosition;
     static int count=0;
     float agentPosition[] = new float[3];
     float agentRosition[] = new float[4];
     float rotangle = 0.0f;
     float aRad= (float) (Math.PI/180);
//Random randomNumGenerator = new Random();
public void initialize(){
// get the reference of the event-out 'setAgentPosition'.
setAgentPosition =
(SFVec3f)getEventOut("setAgentPosition");
          setAgentRosition =
(SFRotation)getEventOut("setAgentRosition");
// initialize the agent position.
agentPosition[0] = 0.0f;
agentPosition[1] = 0.0f;
agentPosition[2] = 0.0f;
     agentRosition[0] = 0.0f;
agentRosition[1] = 0.0f;
agentRosition[2] = 1.0f;
     agentRosition[3] = 0.0f;
public void processEvent(Event e){
if(e.getName().equals("interval") == true){
moveAgent();
// generate random float value ranging between -0.1 to 0.1.
/*float generateRandomFloat(){
return(randomNumGenerator.nextFloat() * 0.2f - 0.1f);
// move the agent randomly.
void moveAgent()
agentPosition = reader();
// agentPosition[0] += generateRandomFloat() ;
// agentPosition[1] += generateRandomFloat();
//agentPosition[2] += generateRandomFloat();
     rotangle += 2.0f;
     agentRosition[3] = rotangle * aRad;
// move the agent to the new position.
setAgentPosition.setValue(agentPosition);
     setAgentRosition.setValue(agentRosition);
}//move agent
static float[] reader()
     float p1[] = new float[3];
     try{
     FileReader fr = new FileReader("data.txt");
     BufferedReader br = new BufferedReader(fr);
     String s;
int count1=0;
count++;
     try{
     while((s=br.readLine())!=null)
count1++;
          StringTokenizer st = new StringTokenizer(s);
          if(count1==count)
          int i=0;
          while(st.hasMoreTokens())
          p1[i++]=Float.parseFloat(st.nextToken());
          }//if
          }//end of stringTokenizer while.
     fr.close();
     catch(IOException f)
          System.out.println("file cannot be opened");
     }//try
     catch(FileNotFoundException e)
     System.out.println("file doesn't exist");
     } //try
     return p1;
}//reader

Didn't we hear this from you yesterday? Sounds too familiar. If so, we told you you're using a MICROSOFT product (Visual J++), which is OLD, and not up to the SUN's java specification. We suggested that you dump Visual J++ and go with something like JBuilder, Forte, Visual Cafe, etc.
This is a SUN site in support of SUN's java - not Microsoft's outdated and non-existent (anymore) version.

Help on Borland JBuilder

can JBuilder 2005 Enterprise run on a PC with this following specifications?
HP Vectra Intel Celeron 366 Mhz, 64mb memory, 4.3 gb harddisk
pls help me. thanks

They have the minimum specs required on this page
http://www.borland.com/jbuilder/pdf/jb2005_techview.pdf
For myself when looking at any of the modern tools, I wouldn't really want to go below 1ghz and 256MB memory - absolute minimum - and preferably more.
Java apps like Eclipse et al are notoriously memory hungry.

Help with error message i JBuilder

Hi everyone!
Hopefully some of you can help me with a really annoying problem. Every time I compile "MyClass.java" I get the following error-message:
"MyClass.java": Error #: 750 : initialization error: com.borland.compiler.symtab.LoadError: java.io.IOException: class not found: class java.lang.Object
If anyone knows how to solve this problem, please let me know!
In advance, thanks!
JB

looks like you don't have java installed or the paths got lost because your JBuilder has no idea where java is :)

Help with Jbuilder

I need a little help,
I'm using Jbuilder to write a java program.
I have wrote a class file which is my superclass and i have created another file. I want the second file to be the subclass and inherit from the superclass.
I have used the extends function, however it compiles through command prompt but when i try to make the file in Jbuilder it says that it cannot resolve the symbol.
Any suggestions

In some cases you need to compile superclass prior subclass compilation.
Just choose the super and use JBuilder Make method.

Weird JBuilder error, help is appreciated

I built an application using notepad and command line comilation which worked fine. However, now we've got JBuilder and I have to put all the code into it. Just putting it directly in did not work, so any advice on that in general would be appreciated, because I'm not at all familiar with JBuilder.
I'm trying to copy paste some of my classes into JBuilder, they're really just support classes for my application itself. In particular, I have an extension of a JTable called MyTable with supporting files. There is a main class MyTable in file MyTable.java and a supporting interface CellColor in file CellColor.java along with many other supporting classes & interfaces in their own files.
I am just trying to get it to compile without even using it in the application yet. However, JBuilder keeps giving this error:
"CellColor.java": Duplicate definition of class automated_base_schedule.CellColor, defined in \src\automated_base_schedule\CellColor.java and also defined in \src\automated_base_schedule\MyTable.java.I have checked and rechecked file MyTable.java (it's not a big file anyways), but it definitely does not redefine CellColor interface. In fact it doesn't even mention it (it's implemented by another class that supports MyTable). I've also checked all the other files in case it was redefined by them.
I can't do anything until I fix this problem. Any advice that might help would be greatly appreciated. Thanks!

You have duplicates.
I would suggest starting another project, workspace (or whatever is is called) and put your stuff in there.
If someone else created the work space then get that again and completely remove your existing one and then replace it with the other one. (Completely means finding the directory and removing it.)

Jbuilder 8 Help Files

I just downloaded and installed JBuilder 8 from Borland.
The Help Files associated with the Help Menu were not included in the download.
Does anyone know if these files are available from Borland and how to get them?
Thanks,
Scott Norris

Did you check the borland web site?

Help installing j2se in jbuilder

ok ok i have given up trying to install j2se in jbuilder. i need some help plz.

If you have j2se installed, in JBuilder go to Tools -> Configure JDKs and, in the 'JDK home path' push 'Change' button and point it to your j2se.

Jbuilder compiler problem with xml DOM - please help.

my problem is that I am using jbuilder 4 professional to compile/run my code.
However I want to use the XML DOM but jbuilder does not appear to support the necessary packages for use with XML.
How can I get round this.
Can I compile instead from the command line - I am using JDK1.4 which supports the java xml packages necessary. Or is there a way of adding the necessary files to my project?
thanks, B

Add the required jar files to your project properties->classpath in JBuilder
The only problem is that. I have been using JBuilder without any problems.

JBuilder help

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