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Stan Dominski · Guest

Dear People,
I downloaded the JBuilder Foundation IDE
I extracted it using Winzip
I clicked on the install icon and installed it

I tried to run my first applet in the Foundation version:

I downloaded the library ( called objectdraw from
http://eventfuljava.cs.williams.edu/library/
and stored it at C:Documents and Settings

In the IDE I clicked on
Tools
Configure
Configure Libraries
Required Libraries
Add

I saw a tree directory structure to the left
Under "User Home" I highlighted "objectdraw"
OK
I clicked "next"
I clicked "finish"

I clicked on "New Project"
typed in the name and clicked on "Required Libraries"
I clicked the "ADD" button

in the tree directory structure to the left under
"User Home" I highlighted "objectdraw"
"OK"

I clicked on "File", "New"
I clicked on "Web" in the tree structure
I clicked on "Applet"
OK
etc etc etc

When I try to run my first applet I get a
"package does not exist" error message BUT
The package does exist, it is stored in the right place
and I configured it ok but still something is wrong !

HELP !
God bless you
Stan

Kevin Dean [TeamB] · Guest

Stan Dominski wrote:

stan Dominski · Guest

Kevin Dean [TeamB] · Guest

stan Dominski wrote:

Stan Dominski · Guest

Kevin - your response is appreciated. I am a little bit confused at this point.

You say " you will need to include the ObjectDraw library as a JAR file in your download to the browser; it won't find it otherwise."

Kevin - The objectdraw library was downloaded to the browser and added to the project.

I went to the Williams mary COllege web site where they give instructions on how to make their "objectdraw" library work with JBuilder. Below is the web address.
http://eventfuljava.cs.williams.edu/library/

It says:
1. Under the "File" menu, choose "New Project." Name your project and click the "Next" button.
2. Check to make sure your library (we'll call it "objectdraw") is under the "Required Libraries" tab by default. If not, then add it using the following steps:
a. Click on the "Required Libraries" tab.
b. Click the "Add..." button.
c. If "objectdraw" has already been created, then select it and continue creating your project and skip to #3. If not, continue following these instructions.
d. Click the "New" button.
e. Give your new library a name (like "objectdraw").
f. Using the pull-down choice menu, select whether you want this library to apply only to this project, to anything this user creates, or anything this copy of JBuilder creates. I sugggest "User Home."
g. Click "Add..." and set a path either to a directory of .class files or to a .jar file.
h. Click "OK" when you are finished.
3. Click the "Finish" button.
4. Under the "File" menu, select "New." Select "Applet". On some copies of JBuilder, you will have to click on the "Web" tab to make this visible, and on others it is visible immediately.
5. Name the class in the field labeled "Class." JBuilder will fill in the "Packages" text field with the name of the project you just created. Delete that and leave the field blank.
6. Leave the rest of the defaults. Click "Finish." Do not type any code.
7. Add as many classes as you want. Remember, though, when you create them to leave the "Package" text field blank. Otherwise there is a frustrating amount of file management to do.*
8. Type your code and run!

* - Note: When you create new classes (including your original), it will create two copies of the .java file in your project window, one under a package called "<Project Source>" and one at the top level. Although the project will run with both there, it is recommended that you delete the one at the top level to clean up the project window. This will not affect how your project runs...."

I have basically done what they are talking about. The objectdraw library has been included.
( the above instructions are obviously based on an older
version of JBuilder);

Kevin you say:
"I'm sorry, but try/catch is one of the most basic Java constructs. At this point I recommend some books on introductory Java programming."

I don't think the problem is a try catch block since I
did not include one in the applet. I will take your
advice and restudy that section when an appropriate
time occurs, however do you have any concrete
advice as to getting the applet to work ?

Thank you and God bless you
Stan

"Kevin Dean [TeamB]" <NkOdSePaAnM (AT) datadevelopment (DOT) com> wrote:

Kevin Dean [TeamB] · Guest

Stan Dominski wrote:

Stan Dominski · Guest

Kevin - Thank you for your response. You said
" Right-click on the web archive and make sure that the library is selected as "Include all" in the build dependencies tab.

Kevin Dean [TeamB] · Guest

Stan Dominski wrote:

Stan Dominski · Guest

Kevin,
Thank you very much for your response.

Your advice was:
"To ensure that the ObjectDraw library is available, go to "Project |Project Properties" and check the "Required Libraries" tab in "Paths".
Then, if it is there, click on the "Preview" tab and inspect the list of JAR files to ensure that the JAR file itself is listed."

I went to "Project | Project Properties
I clicked on the "Required Libraries" tab and I found the path
C:/Documents and Settings/Gateway User/
jbproject/stan_makebox_6/objectdraw.jar

The objectdraw library is there, however when I click on the
"Preview" tab the JAR file is not listed.

I think we are getting closer to a working solution.
Thank you in advance for a little more guidance.

God bless you
Stan

"Kevin Dean [TeamB]" <NkOdSePaAnM (AT) datadevelopment (DOT) com> wrote:

Stan Dominski · Guest

Dear People,
I went to Project
Default Project Properties
Opened Build-> Java

I changed the Language features to
Java 2 SDK v5.0 generics enabled

I changed the Target VM : to Java 2 SDK v5.0 and later

I openned the paths menu item and selected the
Required Libraries tab
selected ADD, New
I set the Name to rt
I set the Location to User Home

I opened the Tools menu and selected Configure -> JDKs

I clicked the "class" tab
I clicked "ADD"

A vertical directory structure appeared.
I selected:
C:/Documents and Settings/Gateway User/.jbuilder2005/re.library

when I clicked "OK" this path jumped up to the top of my screen
and at the bottom of my screen the blicnking cursor waited
for me to type in a name. I didn't know what to do, so I typed
in nothing and hit "OK"

Then I thought that maybe I needed to type in a name, so I went
back and did the same sequence and this time when the blinking cursor waited for me to type in a name I typed in Java 1.5

Then I got a popup that said :
"Java 1.5 does not exist . Accept anyway ?
I clicked on "yes"

Now I see under the class tab at the bottom of the list

C:/Documents and Settings/Gateway User/.jbuilder2005/rt.library
C:/Documents and Settings/Gateway User/.jbuilder2005/rt.library/
Java 1.5

Now when I try to run a simple applet I get error messages that say:

error reading C:Documents and SettingsGateway User.jbuilder2005rt.library; java.util.zip.ZipException: error in opening zip file
error reading C:Documents and SettingsGateway User.jbuilder2005rt.library; java.util.zip.ZipException: error in opening zip file
"MakeBox.java": package objectdraw does not exist at line 2, column 1
"MakeBox.java": cannot find symbol; symbol: class WindowController at line 4, column 30
"MakeBox.java": cannot find symbol; symbol : class Location, location: class MakeBox at line 13, column 30
"MakeBox.java": cannot find symbol; symbol : variable Controller, location: class MakeBox at line 15, column 9
"MakeBox.java": cannot find symbol; symbol : class FilledRect, location: class MakeBox at line 16, column 13
"MakeBox.java": cannot find symbol; symbol : variable canvas, location: class MakeBox at line 16, column 37

Here is the applet coding:

import objectdraw.*;

4 public class MakeBox extends WindowController
{
6 public void begin()
{

}

13 public void onMousePress(Location point)
{
15 Controller.getVersion();
16 new FilledRect(30,150,30,20,canvas);
}
}

Your advice is needed.
God bless you and thank you.
Stan