Xcode and older Java projects

Help!
Recently I've tried to re-run some older Java Xcode projects and have received this error message:
"Jam is deprecated and has been removed; targets that use Jam must be upgraded to native targets. For more information on doing this, consult the Xcode documentation."
I can get around the problem by copying the old code into a newly created project; however, when I tried to follow the instruction in the error message and consult the Xcode documentation, I could find no information on how to do this. I have tried searching the user docs for all of the terms in the above message with no useful results. Selecting "Upgrade all targets to native" from the Project menu produces a warning that this is not supported in Java.
I must be missing something really obvious. Can anybody tell me what is going on?
Thanks, dcl

Thanks for the quick reply, Karl.
I should have mentioned that I'm pretty much a beginner with Xcode and Java (actually, with software in general). I get the impression that you don't think that Xcode is a very good way to develop Java. Why is that?
For my level of programming it works just fine (usually). If I start with a new project there is no problem; however, I can't go back and work on older projects because of the problem I mentioned in the original email.
Any clues as to what is going on?

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XCode Java project: can't add files

Greetings all,
I have a Java codebase which I developed in JBuilder. I now want to produce the final product, a Mac app. To do this I fired up my XCode 2.5. I went File->New Project and chose Java Application under the Java template group.
Since I don't want the three .java files that the template helpfully puts into the project, I removed them. (The only way to do this seems to be to close the project, go to the Finder, and delete them there, then re-open the project...whatever...) My next task was obviously to add my java files and the three .jar files that they depend on.
Which is where I ran into problems. It doesn't seem to matter what I do, I cannot get my files properly added to the project.
I have tried dragging the files from the Finder into the XCode project window and dropping them on the src group icon; despite the fact that the disclosure triangle to the left of the group flashes a lovely shade of pink and then self-opens, when I drop the files there, they do NOT get put into the group; they become siblings of the group instead.
I have tried right-clicking on the group and choosing Add->Existing Files; same result as above.
I have tried single-clicking on the group and choosing Project->Add to Project from the menu bar; same result as above.
I should mention that in all of these three, I do get asked whether I want to copy the file or just have a reference created to it; I always choose not to copy the file (since I want my files to live elsewhere). However, just to experiment, I have just tried Project->Add to Project and asked for the chosen file to be copied...same result as above. The file ends up a sibling of the src group.
I have also tried removing the src group from the project window and then dragging in from the Finder the entire src folder which holds my Java codebase. It successfully arrives in the project window, but its colour is yellow (whereas the original one's colour was blue) and it never gets compiled. I can't seem to convince XCode that these files are source and should be compiled...despite the fact that if I get out the Info window on any of them, the FileType popup menu states that they are "sourcecode.java".
I have even tried making an alias to the src folder which holds the codebase, and moving this alias into the XCode project directory in the Finder. This fails to build since XCode tells me that it can't create the directory "src" since one already exists with that name!
The only way I have found which has any success at all is to actually copy the files and folders into the src and lib folders of the XCode project directory, in the Finder. However, this is not acceptable for either the java or the .jar files. The java files need to be in a certain location for JBuilder, and the .jar files are common files and I am not at all interested in having multiple copies of them floating around on my disk! Furthermore this sort of behaviour should not be necessary with a modern compilation system, especially not one created by Apple.
Please, can some kind soul tell me, how on earth am I supposed to add existing files to an XCode Java application project, without putting them into the project directory on the disk?
Thanks gratefully in advance!

Hi SkiAddict1
I can't speak for Xcode 2.5, only 3.1...
The way to add new Java source files is to highlight one of the existing source files (in the src group) and then use File > New File...
If you want to create a package hierarchy, then you need to use Finder to create the corresponding folders inside src. Once you've done this, then you can create a source file inside a package by highlighting any Java source file, then selecting File > New File... then using the Choose option to specify the correct location. At this point, the main project window doesn't show the newly created file in the folder hierarchy, however next time you restart Xcode it will appear in the right place.
I think the issue is that the designers of Xcode didn't adequately cater for the Ant tool's use of a src folder and the requirement for nested folders to represent a package hierarchy. However, it's still possible to make do provided you create the folders yourself and always remember to highlight an existing source file before creating a new file.
Bob
PS: A neat trick which I find quite handy when porting an existing Java program is to use the boilerplate main class which Xcode creates and use it to call the main () method of the imported project. Eg:
public class ProjectName {
public static void main (String [] args) {
// Call the main method of the imported project
com.company.project.ProjectClass.main (args);
}

File access in a Java project under XCode

Hello again,
I have had another issue: I'm trying to have one of my classes read information from an XML file, whose location is in the same folder as the classes and, indeed, the project (and the .xcodeproj file).
So I give the file's name to the method, but it cannot seem to find the file where I put it; instead, it looks for it in (Project folder)/Build/Debug/.
What should I do? I do not feel it wise to put it into Build/Debug as it is a file that should be deployed along with the rest of the application (when I learn how to make one, that is), but after a little searching around I'm a bit at a loss about that.
Thanks in advance,

This option is normally used for storing preference
files. If you have a number of files then you can
create a folder to hold them. If you have a look
around at the files which are already there (for
other applications) you'll get the idea.
Well, preference files are fine but I don't view them as useful for data.
This folder
is strictly OS X only, but I'll explain there's a way
around that later on.
I failed to catch that explanation, but you might want to leave it at that. No high priority as far as I'm concerned. (Of course, it could be of interest to anyone who finds this discussion - why else are we using a forum, right?)
You can create a bundle from a Java program using
Macintosh HD/Developer/Applications/Java Tools/Jar
Bunder. Again, this is OS X only.
Again, good to know, but not usable now by this developer.
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This form of words will extract the file called
stars.jpg from the jar file:
URL f = getClass ().getResource ("stars.jpg");
image = ImageIO.read (f);
Interesting, but the software I'm using as a model of sorts (as far as general design goes from a user point of view) seems to have little in the jar file besides classes. I'd like sufficiently advanced users to be able to access the data files directly (I'll make them nice XML files) but not get into the .jar. Tell you what, I just stumbled on the XML reading class and it seems to be using File.getAbsolutePath(). I must try this.
This works on all Java platforms and so is often
used. There is a standard Unix/Terminal command
called jar which gives you fine control over a jar
file. Type man jar in Terminal for details and more
info about jar files.
Thanks.
6) You think you never mentioned a sixth option?
Well, you did - in that other topic you answered.
You
gave me the idea of fiddling with project
settings.
Be aflaid, be vely aflaid! I have tried to use
$(PROJECT_DIR) instead of $(inherited) in "Build
Products Path" and "Per-configuration Build
Products
Path", but so far to no avail: running throws a
"LaunchRunner Error" = "The main class
"Main_Class"
could not be found."
These are Xcode options and probably won't be of much
value to you.
Well, they are. But I suddenly realize it may work fine and well while in debug, but not so well once everything is compiled and set into a nice application. I'll try this.
BTW. Did you know that a Java program can find out
which platform it's running on? Just call String
opSys = System.getProperty ("os.name");
This enables you to use different solutions for each
different platform.
Actually, I knew about System.getProperty. I've been trying to use it to imitate the Application.Path property from Visual Basic (the language I use most at work), that returns the current location of the application. Does there exist something like that in Java? I've tried System.getProperty with "user.dir", "java.home" and "java.class.path", to no avail: the first gives me Build/Debug (or Build/Release, depending on the build configuration), the second returns the place where you can find Java, in the System/Library structure, and the third yields a looooong path list.
(Still, might be onto something with that File.getAbsolutePath() thingie. I really have to try it.)
Thanks again for the elaboration, helpful as usual and rightly clicked so.
iMac Mac OS X (10.4.8)

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Syntax error on token class, delete this token
Syntax error on token misplaced construct
Syntax error insert Enum body to complete EnumheaderName
Syntax Error insert Enum body to complete enum decleration
The public type requirements must be defined in its own file.
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Thanks

muj wrote:
I am working on a Java project. I am working a programme to show sets of requirements to a software engineer. At the end the programme will show all consistent requirements with no conflicts between them.
I am working on the first section. This invloves creating a class with a HashSet to insert the requirements in to the class. I am using this code at the moment
import java.util.HashSet;
import java.util.Set;
public class requirements {
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          String item_2 = "r2";
          String item_3 = "r3";
          boolean result;
          //Add the items to the Set
          result = requirements.add(item_1);
          System.out.println(item_1 + ": " + result);
          result = requirements.add(item_2);
          System.out.println(item_2 + ": " + result);
          result = requirements.add(item_3);
          System.out.println(item_3 + ": " + result);
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          System.out.println(item_1 + ": " + result);
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          //Adding null again
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          System.out.println("null: " + result);
     public static void main(String[] args) {
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the class is called requirements and I get these errors
Return type of the method is missing
Syntax error on token class, delete this token
Syntax error on token misplaced construct
Syntax error insert Enum body to complete EnumheaderName
Syntax Error insert Enum body to complete enum decleration
The public type requirements must be defined in its own file.
The next stage would be to send the Hashset to another class to perform operation on the set. The other class is called specification. Can anyone help me to resolve the errors and pass the set to the other class.
ThanksReading your code, it looks wrong... but it turns out that a lot of it was because you did not use CODE brackets like this:
{+code}
System.out.println("hello");
{code+}
becomes
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though I recommend putting classes inside a package.
Syntax error insert Enum body to complete EnumheaderNameWhere is this even in your code? Did you post the code you had a problem with?

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https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webas/java/java development infrastructure jdi overview.pdf
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Working with Net Weaver Development Infrastructure :
http://help.sap.com/saphelp_nw04/helpdata/en/03/f6bc3d42f46c33e10000000a11405a/content.htm
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