Java Programming on Mac OS

Do you have an IDE for Mac OS 9 or X. Of course, it would be better if it's free. Where can I get sample codes? Do all programs created using Java on a Mac run on PC's aswell?
Tnx!

Agreed, it is slow, but that is very likely due to a memory deficit. I've tested netbeans on Win2k with various memory configurations, bottom line the more memory you have will determine how well netbeans will run.
On intel platforms about 600 Mhz is good enough for most people (provided that there is sufficient ram). I'm suprised to hear that it is slow even on a dual 500 ppc. Maybe when they move to JDK 1.4 we can fully expect a speed bump :). I hear swing in JDK 1.4 is a lot more efficient.
netbeans is cool, but very slow (even on my dual 500).
You can run it with the default metal look as opposed
to the Mac L&F (which isn't really a mac l&f anyway,
the menus are on the individual windows instead of the
menu bar) to get a massive speed boost.
If you don't mind doing without the code completion
stuff you get a cool free ide from apple called
ProjectBuilder (It might have come with the OS on
seperate developer tools CD or eles it came as an
image on your hd...) You can also develop in c/c++ and
objective c in ProjectBuilder...
As an alternative you could have a look at the
personal edition of JBuilder 6 for OS X (Its about $60
or so). Its a little faster than net beans, but it is
still slow.

Similar Messages

Java programming in Mac OS X

Quick question.
Are there any differences in coding Java between a Windows and an OS X environment. I've noticec that when I try to compile the same set of code between Windows and OS X that I will not receive any syntax errors in Windows but will in OS X. Example the Scanner utility. Anything that has Scanner in it including the import statement gives me a 'cannot resolve symbol' syntax error. Anyone know if there is a different scanner utility for Java in OS X?
Thanks,
Jeremy

Well that would do it. I'm only running OS 10.3.? with Xcode 1 and that only has JDK 1.4......won't be able to get 1.5 on here unless I upgrade to OS 10.4
Thanks for the help.

Keep getting error message when trying out a small java program in terminal

I've been trying out running java programs in mac os x terminal. I have eclipse as well, but it's too much for me right now. I copied some programs out of the dummies book I have, just to get a feel for things -- so, I went to the desktop where the program was, and compiled it (I saved it with a .java extension). "javac javaprogram.java" to compile, which it did fine, and then 'java javaprogram' to execute it. It's just a simple line that says 'you'll love java!'. Anyway, it wouldn't execute it.
Here's the program (written in text edit):
class Displayer {
     public static void main (String args []) {
          System.out.println ("You'll love Java!");
I got these messages:
Exception in thread "main" java.lang.NoClassDefFoundError: javaprogram
Caused by: java.lang.ClassNotFoundException: javaprogram
     at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:316)
     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:288)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:374)
Now, I noticed that the first part of the error is "java.lang.NoClassDefFoundError: javaprogram". When I tried to run the program, it 'created' or put something on the desktop called Displayer.class, so I'm not sure what's going on. I've compared what I entered to what's in the book, and there are no mistakes on my part.
Can anyone tell me what I'm doing wrong, and is there any book or site I can go to which will instruct me on running programs in terminal?

For starters, rename javaprogram.java to Displayer.java and dojavac Displayer.java
java Displayerand since you are new to Java, change your source code to public class Displayer.
In Java, files containing a Java class named "ClassName" should/have to be named "ClassName.java".

How to extract .sit files(in MAC) using java program

Hi,
please help me , i want to simple program for
" how to extract .sit files(in MAC) using java program"
that sit files same as zip files in windows..[

Thanks for reply...
but i search in the google about this topic...there is no results will appear..
the problem is "i have to run program in the MacOS like extract all the
.sit(StuffIt) extension files. These sit files same as zip files in the windows... we have one tool called StuffIt Expander but it is 3rd party tool. but here requirement is i have to write my own program to extract all the files same as zip file program...
please do the needful..i am waiting for ur reply,,,

Java programs don't accept input from German Microsoft keyboard on Mac OS X

Hi everyone,
I use Microsoft's Natural Ergonomic Keyboard 4000 with a German layout and the current IntelliType Pro driver on a Mac (OS X 10.5).
When activating the NEK 4000-specific German keyboard layout supplied with IntelliType Pro for Mac, Java programs cannot recognize keyboard inputs anymore. They can again as soon as I switch back to the standard German keyboard layout provided by Apple with OS X 10.5. However, this layout does not match the characters printed on the NEK 4000.
This phenomon is limited to Java programs running on OS X with the IntelliType Pro's specific German keyboard layout activated. It does not occur with native OS X programs. Therefore, the problem could result from Microsoft's IntelliType Pro driver for OS X, Sun's Java Virtual Machine (in OS X), or Apple Mac OS X.
Could a Sun employee please take a look at this issue?
I am more than willing to provide the respective log files if this was needed.

arne2 wrote:
Sun's Java Virtual Machine (in OS X), Apple, not Sun, is the source of the VM on that OS.
Apple probably gets it from Sun but still Apple is responsible for it.

Need help with running a Java program on Linux

I am trying to get a Java program to run on a Linux machine. The program is actually meant for a Mac computer. I want to see if someone with Java experience can help me determine what is causing the program to stall. I was successful in getting it installed on my Linux machine and to partially run.
The program is an interface to a database. I get the login screen to appear, but then once I enter my information and hit enter the rest of the program never shows, however, it does appear to connect in the background.
Here is the error when I launch the .jar file from the command screen:
Exception in thread "main" java.lang.IllegalArgumentException: illegal component position
at java.awt.Container.addImpl(Unknown Source)
at java.awt.Container.add(Unknown Source)
I am not a programmer and I am hoping this will make some sense to someone. Any help in resolving this is greatly appreciated!

Well, without knowing a little bit about programming, and how to run your debugger, I don't think you're going to fix it. The IllegalArgumentException is saying that some call does not like what it's getting. So you'll have to go in an refactor at least that part of the code.

How to use java programe in oracle form

Hello Expert,
My Config is : -
Forms [32 Bit] Version 11.1.1.3.0 (Production)
Jdeveloper - 10.1.3
I want to use the java programe in form builder. I create the one java class in Jdeveloper -
package demo;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;
public class get_info{
   public static void main(String[] args){
   ch_add();
   public static void ch_add()
InetAddress ip;
try {
ip = InetAddress.getLocalHost();
/*System.out.println("Current IP address : " + ip.getHostAddress()); */
NetworkInterface network = NetworkInterface.getByInetAddress(ip);
byte[] mac = network.getHardwareAddress();
/*System.out.print("Current MAC address : ");   */
StringBuilder sb = new StringBuilder();
for (int i = 0; i < mac.length; i++)
sb.append(String.format("%02X%s", mac[i], (i < mac.length - 1) ? "-" : ""));
System.out.println(sb.toString());
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (SocketException e){
e.printStackTrace();
and this into Formweb.cfg and default.env and also add into Form_class_path. After that i import this java into forms.
Code genertated -
PACKAGE BODY get_info IS
-- DO NOT EDIT THIS FILE - it is machine generated!
args   JNI.ARGLIST;
-- Constructor for signature ()V
FUNCTION new RETURN ORA_JAVA.JOBJECT IS
BEGIN
    args := NULL;
    RETURN (JNI.NEW_OBJECT('demo/get_info', '()V', args));
END;
-- Method: main ([Ljava/lang/String;)V
PROCEDURE main(
    a0    ORA_JAVA.JARRAY) IS
BEGIN
    args := JNI.CREATE_ARG_LIST(1);
    JNI.ADD_OBJECT_ARG(args, a0, '[Ljava/lang/String;');
    JNI.CALL_VOID_METHOD(TRUE, NULL, 'demo/get_info', 'main', '([Ljava/lang/String;)V', args);
END;
-- Method: ch_add ()V
PROCEDURE ch_add IS
BEGIN
    args := NULL;
    JNI.CALL_VOID_METHOD(TRUE, NULL, 'demo/get_info', 'ch_add', '()V', args);
END;
-- Method: wait (J)V
PROCEDURE wait(
    obj   ORA_JAVA.JOBJECT,
    a0    NUMBER) IS
BEGIN
    args := JNI.CREATE_ARG_LIST(1);
    JNI.ADD_LONG_ARG(args, a0);
    JNI.CALL_VOID_METHOD(FALSE, obj, 'demo/get_info', 'wait', '(J)V', args);
END;
-- Method: wait ()V
PROCEDURE wait(
    obj   ORA_JAVA.JOBJECT) IS
BEGIN
    args := NULL;
    JNI.CALL_VOID_METHOD(FALSE, obj, 'demo/get_info', 'wait', '()V', args);
END;
-- Method: wait (JI)V
PROCEDURE wait(
    obj   ORA_JAVA.JOBJECT,
    a0    NUMBER,
    a1    NUMBER) IS
BEGIN
    args := JNI.CREATE_ARG_LIST(2);
    JNI.ADD_LONG_ARG(args, a0);
    JNI.ADD_INT_ARG(args, a1);
    JNI.CALL_VOID_METHOD(FALSE, obj, 'demo/get_info', 'wait', '(JI)V', args);
END;
-- Method: equals (Ljava/lang/Object;)Z
FUNCTION equals(
    obj   ORA_JAVA.JOBJECT,
    a0    ORA_JAVA.JOBJECT) RETURN BOOLEAN IS
BEGIN
    args := JNI.CREATE_ARG_LIST(1);
    JNI.ADD_OBJECT_ARG(args, a0, 'java/lang/Object');
    RETURN JNI.CALL_BOOLEAN_METHOD(FALSE, obj, 'demo/get_info', 'equals', '(Ljava/lang/Object;)Z', args);
END;
-- Method: toString ()Ljava/lang/String;
FUNCTION toString(
    obj   ORA_JAVA.JOBJECT) RETURN VARCHAR2 IS
BEGIN
    args := NULL;
    RETURN JNI.CALL_STRING_METHOD(FALSE, obj, 'demo/get_info', 'toString', '()Ljava/lang/String;', args);
END;
-- Method: hashCode ()I
FUNCTION hashCode(
    obj   ORA_JAVA.JOBJECT) RETURN NUMBER IS
BEGIN
    args := NULL;
    RETURN JNI.CALL_INT_METHOD(FALSE, obj, 'demo/get_info', 'hashCode', '()I', args);
END;
-- Method: getClass ()Ljava/lang/Class;
FUNCTION getClass(
    obj   ORA_JAVA.JOBJECT) RETURN ORA_JAVA.JOBJECT IS
BEGIN
    args := NULL;
    RETURN JNI.CALL_OBJECT_METHOD(FALSE, obj, 'demo/get_info', 'getClass', '()Ljava/lang/Class;', args);
END;
-- Method: notify ()V
PROCEDURE notify(
    obj   ORA_JAVA.JOBJECT) IS
BEGIN
    args := NULL;
    JNI.CALL_VOID_METHOD(FALSE, obj, 'demo/get_info', 'notify', '()V', args);
END;
-- Method: notifyAll ()V
PROCEDURE notifyAll(
    obj   ORA_JAVA.JOBJECT) IS
BEGIN
    args := NULL;
    JNI.CALL_VOID_METHOD(FALSE, obj, 'demo/get_info', 'notifyAll', '()V', args);
END;
BEGIN
NULL;
END;
Now i want to call the o/p of Java programe in oracle text item. Please help me. It's very urgent. I am not good in Java.

Sir i use java importer.
PACKAGE BODY get_info IS
-- DO NOT EDIT THIS FILE - it is machine generated!
args   JNI.ARGLIST;
-- Constructor for signature ()V
FUNCTION new RETURN ORA_JAVA.JOBJECT IS
BEGIN
    args := NULL;
    RETURN (JNI.NEW_OBJECT('demo/get_info', '()V', args));
END;
-- Method: main ([Ljava/lang/String;)V
PROCEDURE main(
    a0    ORA_JAVA.JARRAY) IS
BEGIN
    args := JNI.CREATE_ARG_LIST(1);
    JNI.ADD_OBJECT_ARG(args, a0, '[Ljava/lang/String;');
    JNI.CALL_VOID_METHOD(TRUE, NULL, 'demo/get_info', 'main', '([Ljava/lang/String;)V', args);
END;
-- Method: ch_add ()V
PROCEDURE ch_add IS
BEGIN
    args := NULL;
    JNI.CALL_VOID_METHOD(TRUE, NULL, 'demo/get_info', 'ch_add', '()V', args);
END;
-- Method: wait (J)V
PROCEDURE wait(
    obj   ORA_JAVA.JOBJECT,
    a0    NUMBER) IS
BEGIN
    args := JNI.CREATE_ARG_LIST(1);
    JNI.ADD_LONG_ARG(args, a0);
    JNI.CALL_VOID_METHOD(FALSE, obj, 'demo/get_info', 'wait', '(J)V', args);
END;
-- Method: wait ()V
PROCEDURE wait(
    obj   ORA_JAVA.JOBJECT) IS
BEGIN
    args := NULL;
    JNI.CALL_VOID_METHOD(FALSE, obj, 'demo/get_info', 'wait', '()V', args);
END;
-- Method: wait (JI)V
PROCEDURE wait(
    obj   ORA_JAVA.JOBJECT,
    a0    NUMBER,
    a1    NUMBER) IS
BEGIN
    args := JNI.CREATE_ARG_LIST(2);
    JNI.ADD_LONG_ARG(args, a0);
    JNI.ADD_INT_ARG(args, a1);
    JNI.CALL_VOID_METHOD(FALSE, obj, 'demo/get_info', 'wait', '(JI)V', args);
END;
-- Method: equals (Ljava/lang/Object;)Z
FUNCTION equals(
    obj   ORA_JAVA.JOBJECT,
    a0    ORA_JAVA.JOBJECT) RETURN BOOLEAN IS
BEGIN
    args := JNI.CREATE_ARG_LIST(1);
    JNI.ADD_OBJECT_ARG(args, a0, 'java/lang/Object');
    RETURN JNI.CALL_BOOLEAN_METHOD(FALSE, obj, 'demo/get_info', 'equals', '(Ljava/lang/Object;)Z', args);
END;
-- Method: toString ()Ljava/lang/String;
FUNCTION toString(
    obj   ORA_JAVA.JOBJECT) RETURN VARCHAR2 IS
BEGIN
    args := NULL;
    RETURN JNI.CALL_STRING_METHOD(FALSE, obj, 'demo/get_info', 'toString', '()Ljava/lang/String;', args);
END;
-- Method: hashCode ()I
FUNCTION hashCode(
    obj   ORA_JAVA.JOBJECT) RETURN NUMBER IS
BEGIN
    args := NULL;
    RETURN JNI.CALL_INT_METHOD(FALSE, obj, 'demo/get_info', 'hashCode', '()I', args);
END;
-- Method: getClass ()Ljava/lang/Class;
FUNCTION getClass(
    obj   ORA_JAVA.JOBJECT) RETURN ORA_JAVA.JOBJECT IS
BEGIN
    args := NULL;
    RETURN JNI.CALL_OBJECT_METHOD(FALSE, obj, 'demo/get_info', 'getClass', '()Ljava/lang/Class;', args);
END;
-- Method: notify ()V
PROCEDURE notify(
    obj   ORA_JAVA.JOBJECT) IS
BEGIN
    args := NULL;
    JNI.CALL_VOID_METHOD(FALSE, obj, 'demo/get_info', 'notify', '()V', args);
END;
-- Method: notifyAll ()V
PROCEDURE notifyAll(
    obj   ORA_JAVA.JOBJECT) IS
BEGIN
    args := NULL;
    JNI.CALL_VOID_METHOD(FALSE, obj, 'demo/get_info', 'notifyAll', '()V', args);
END;
BEGIN
NULL;
END;
I read both document which is given by you.
Basicaly i don't know how to call java program in form builder.
I wrote this code on When-button-pressed
DECLARE
jo ora_java.jobject;
rv varchar2(1500);
ex ora_java.jobject;
BEGIN
jo := get_info.new;
rv:=get_info.ch_add(jo );
EXCEPTION
WHEN ORA_JAVA.JAVA_ERROR then
message (' Unable to call out to Java, ' ||ORA_JAVA.LAST_ERROR );
message('');
WHEN ORA_JAVA.EXCEPTION_THROWN then
ex := ORA_JAVA.LAST_EXCEPTION;
message(' Unable to call out to Java ' ||Exception_.toString (ex ) );
message(' Unable to call out to Java ' ||Exception_.toString (ex ) );
END;
No error comes and no output comes. I want the client MAC ID. please guide me where i need to change the code.

Java programs which require a specific version of java won't work

So I'm running 10.4 on my macbook pro, and when I try to run a java program that requires any version of java, I get an error saying I don't have that version. Java works fine from the command line when I run programs I wrote, and java -version outputs:
java version "1.5.0_16"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_16-b06-275)
Java HotSpot(TM) Client VM (build 1.5.0_16-132, mixed mode, sharing)
When I try to run something (say, some java applet), I get the message:
Could not launch the application because it requires a version of Java that is not installed.
(in smaller print):
This application requires Java 1.4 or later, but only the following Java versions are installed: . Updating to a newer version of Mac OS X may resolve this.
The message makes me think that in some text file or some preference somewhere, the thing that tells the system what version of Java I have got deleted. Anyone have any ideas of something I can do to fix it?

I usually use Win 7 and lately have been playing with the Win 10 preview. I like Win 7.

Java programs not working.

I'm having problems running java programs. Whenever I open them, the window will open, but nothing will appear inside. The only parts of the program that appear, and only sometimes, will be the word "cancel" or "OK" where there should be buttons, but the rest of the program, including text boxes, other buttons, anything else, etc. will not load. Does anybody have any ideas as to what might be the problem? Thank you.

Hmmm. Both of those programs work fine on my machine. We're running the same version of the OS and the hardware shouldn't matter, but maybe someone with an Intel Mac like yours could try them and report on their results.
As a shot in the dark, you could run the standard maintenance routines like Repair Permissions and Repair Disk to see if that fixes your problem. Other than that, I don't know what to suggest. Sorry.

Help running Java apps in Mac OS 10.1.3

I'm currently taking an intro course to Java and I've been using the OS 10.1.3 Unix Shell to compile and run my assignments, using the "javac" command to compile my classes and the "java" command to run them. It's been working fine until a few days ago when every class I started to compile from that day on wouldn't run. The previous classes I've compiled run fine, however if I re-compile them and attempt to run them I incur the same problem.
I get this error :
Exception in thread "main" java.lang.NoClassDefFoundError:
followed by the classname.
The best I can figure is that I've accidently changed some option in the java system, but now I have no idea as to how to change it back. I've asked my CS professor what to do but ofcoarse he's a PC user and when he hears Mac he just replies "I don't know about Macs" eventhough I've tried telling him that OS X is unix based. Anyways, if there are any well informed Mac OS 10.1.3 users out there, please help me so that I can resume my CS assignments on my Mac.
Thanks,
Craig

1. Are you certain that you have all of your java files compiled
and that their class files are in your classpath? Did you import
the class TestWeeklyEmployee in your java file that has your
main method? Do all of your class filenames have the same
name (minus the .java or .class) as the class in the file?All of the java files needed to run the class are in the same directory, and they all have the correct names, You see I'm able to run my programs perfectly on other machines, infact I have to test them in the computer labs before I turn them in. So I know that my probrem isn't a syntax error.
2. when you start the terminal, type the following:
echo $CLASSPATH
and make sure that the output it gives has the . [dot] that you
added via the .cshrc file at the end or that only a dot gets
displayed. If it does not have your dot in the output, then you will
have to use the -classpath option to the java runtime binary to
tell it where your classes are located.I tried typing echo $CLASSPATH but I got this error message:
CLASSPATH: Undefined variable.
And I had directly copied the code you wrote into my .cshrc file.
3. When you try to run your java program, are you sure that you > are in the directory where all of the class files are located? use
the "ls" command to see if your class files are in the current
directory. (you may want to search the web for a UNIX tutorial or
a UNIX for beginners type of article so that you can feel more
comfortable using the Terminal application)Yes all of my classes are in the same directory and yes I'm in the correct directory when compiling and attempting to run my programs.
4. Assuming that 3 is true: If you run your program using the
"java -classpath . MyClassWithAMainMethod" do you still get an
error? If you do, then I am pretty sure that you have neglected to
import a class that your main method is trying to instantiate or
that you have not compiled the source of the class in question >
(or both).All classes are imported correctly and yes I have compiled the class. As I said it works fine when I compile and run on other machines, just not mine.
Are you trying to install the developer tools from the developer
cds? If you are and you have since updated your OS to 10.1.x,
then I would not expect project builder to work. The same thing
happened to me when I upgraded to 10.1.x. Sounds like you
may need to install the latest developer tools which can be
downloaded for free from the Apple Developer Connection site
(http://www.apple.com/developer). Installing the latest developer
tools should get things right for you.The developer tools that I'm attemping to run are not from the CD, they're the current downloadable version from apple developer. I've contacted apple developer support with my problem with project builder, but they blew me off.
So now that we've eliminated these possibilities, any other ideas?
Thanks,
Craig

How to compile and execute lex,yac,c and java programs

its the 3rd day on my New MacBook pro..
as i just migrated from windows to mac i love to work on this..
The main problem is i DON't know .......
how to compile and execute
1) lex and yac programs
2) c program
3) java program
so please help me
THIS is the error i got   a1.l is a program
i got the same error when i used gcc
$ lex a1.l
$ cc lex.yy.c
Undefined symbols:
"_yywrap", referenced from:
      _yylex in cc8QDQjW.o
      _input in cc8QDQjW.o
ld: symbol(s) not found
collect2: ld returned 1 exit status

Is the problem that you don't know how to compile and execute these programs on a Mac, or just that you don't know how to compile and execute them?
Mac OS X is really just a version of BSD Unix, as far as programs like like bison, flex and gcc are concerned...and even when Apple specific versions are provided in the Developer Tools, there are symlinks in the usual places in the Unix file hierarchy.
For problems with lex and yacc, I suggest you start with their own references, for example, here.
Or you could just use %option noyywrap, if you only have one file to scan.
Or you could link to libfl.a using -lfl and use the default version from that library.
But you really should (as Keith Barkley was subtly hinting at) learn how these tools work and why they work that way.

Start a WS application from within a java program

Hi,
I need to start a WebStart application from within a java program. Therefore I develeoped a class which starts javaws.exe within its main-method like this:
try {
Runtime.getRuntime().exec(
"c:\\java web start\\javaws.exe http://a.b/c.jnlp"
} catch (Exception e) {
e.printStackTrace();
And that did not work. Java Web Start tries to start the .jnlp program but returns with the message, that the app-desc|applet-desc|installer-desc|component-desc is missing. But it is there: It is an applet and thus I defined an applet-dec.
I tried to do it from a command line with the followinf command:
java -Djnlpx.home="C:\abc" -cp "C:\abc\javaws.jar" com.sun.javaws.Main http://a.b/c.jnlp
And that works. But using this command from within my jjava prog using the Runtime.exec() method does not work.
By the way, simply type "javaws http://a.b/c.jnlp" at the command line does not work.
Can anybody help me? How may I start a .jnlp program within another java program.
Kind Regards,
Tobias Neubert

Hi,
I recently had a quite similar problem. At least the error message by the Java Web Start application on Mac OS X complained about the same error (app-desc|applet-desc|installer-desc|component-desc). It turned out to be some bad invisible characters in the jnlp file. I copied some sample from a web page which for some reason contained some unicode chars that the parser doesn't like. Use a different text editor or the less command on unix to see if there are some strange characters in you jnlp file.
But it seems strange that it does work from the command line and not from your code.
-Stefan

Cannot run java program after archive and install

Hi,
I am new to this forum and appreciate the help and advice given here.
Yesterday, I did an archive and install on my system which install 10.4.3. Afterwards, I installed X11 and did the software updates which brought my system back to 10.4.8. It also installed Java 1.3.1, 1.4.2, and 1.5 (J2SE5).
Prior to the archive and install, I had no problems executing a java program either in the command line in an X11 window or using Eclipse. However, when I try now I get the exception message "Exception in thread "main" java.lang.NoClassDefFoundError:". I checked my CLASSPATH and it's not the problem. I am able to compile, and execute the javadoc command. If I type java -version I get
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-112)
Java HotSpot(TM) Client VM (build 1.5.0_06-64, mixed mode, sharing)
Under Eclipse, I am able to see the Java versions under Preferences - Java - Installed JREs but if I go to the Run -> Run As menu, I see (none applicable).
Thanks for any suggestions to fix this.
James
Dual 867MHz G4 Mac OS X (10.4.8)

I resolved the issue. I reinstalled XCode and had an issue with one of the files I was testing.

How to start a Java application on Mac OS

Hello,
I am not sure whether this post would be appropriate to this community, but with the hope to find the answer to the question we have I'll try:
We are fairly new to Java Technology. We had the task to develop an application for Windows OS, and have successfully completed the job. BUT, we decided to go a bit further and see how our program would behave on Mac OS.
Unfortunately, we have never dealt with Macs before, thus don't have any idea on how to make the application run on Mac OS platform.
With Windows we have no problem, went by the most simple way by creating a .cmd file with "java name_of_file" string. Is there any similar simple way to start our small program on Mac OS?

There are many options:
From Terminal (similar to ms-dos prompt, if you didn't know it already):
If you have "java MyApp" in your myapp.cmd, you can execute it with:
sh myapp.cmd
Another option is to set myapp.cmd as executable:
chmod u+x myapp.cmd
and then from Terminal: ./myapp.cmd
Third and best option is to make an executable jar. Then you only have to double-click .jar -file to launch your application (and no need to go to Terminal).

How to launch java files on Mac OS

Hey! I got a question: how to wrap a java file into Mac OS executable file? Analog for Windows is exe4j . It creates a jre in a exe file , so a person dont need to install runtime env. So any way to do like that? I need to launch program on Mac OS without terminal & installed jre. Just double-click on icon. Thanx for response.

jwenting wrote:
won't work. The question is how to execute a Java source file as a Mac executable.I don't think that's what the OP wants. To quote him:
I need to launch program on Mac OS without terminal & installed jre. Just double-click on icon.Sounds exactly as if he'd like to have an executable jar file. And since Mac OS X comes with a JRE preinstalled, there is no more magic necessary to make it easily usable.

Java Programming on Mac OS

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