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Comment compiler du java???

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Julie -  
Hello!
I just installed Java Runtime Environment 1.5 on Windows XP, but I can't seem to compile anything!!! Can someone please provide me with precise instructions on how to do it???
I'm a computer science student and I need Java, but I can't even get it to work!!!
Thanks in advance for your help,
Julie

24 answers

  1. philtrain
    Hello,

    I uninstalled jdk

    Without jdk, no Java programming!

    The jdk installer is the same as all those found under Microsoft Windows(tm). You just need to click "next" to move from one screen to another.
    After installation, you end up with a directory that contains the Java programs and libraries, for example
    c:\jdk1.5.0_05

    Then you need to manually finish the installation by modifying two environment variables:
    PATH which allows access to the jdk executables from a command prompt and CLASSPATH which indicates the list of directories containing the Java libraries.

    The end of PATH should look something like this:
    PATH=;[drive:]\[jdk installation directory]\bin
    and for the other variable:
    CLASSPATH=.;[drive:]\[jdk installation directory]\lib
    for example:
    PATH=;c:\jdk1.5.0_05\bin
    CLASSPATH=.;c:\jdk1.5.0_05\lib
    (Don't forget the dot at the beginning of the line for CLASSPATH)

    To test the changes, you need to type in the console:
    >echo %PATH%
    and
    >echo %CLASSPATH%
    (This needs to be confirmed because I don't use Microsoft Windows(tm), so I'm saying this from memory)

    For more help, after installing the jdk, can you provide:
    - the jdk installation directory
    - the values of the environment variables

    Good luck,
    Philippe.
    --
    --- O Espírito da Liberdade ---
    28
    1. adi
      Désolé, je ne peux pas vous aider avec ça.
      0
    2. Emna
      You will find it in Control Panel/System/Advanced/Environment Variables/new or modify if it already exists.
      0
    3. audrey
      you’re saving my life too! Thank you!
      0
  2. Galsungen Contributor
    look here:

    http://www.commentcamarche.net/forum/affich-1371943-%5Bjava%5D-compiler-avec-Windows

    there have been other posts in the programming forum about this, if you search a bit you should find the solution to your problem :)
    -- 
    And a time for every thing under heaven ...
    2
    1. Julie
      Thank you very much, but it still doesn't work!! lol
      When I run "javac fichier.java", it tells me that "javac is not recognized as an internal or external command, an executable program or a batch file"
      unless the JRE is not installed and it played a joke on me???
      0
  3. Galsungen Contributor
    You need to set the JAVA_HOME paths; it’s the only way by adding an environment variable. Otherwise, you can also use an API like NetBeans or Eclipse to compile. :)
    -- 
    And a time for every purpose under heaven ...
    0
    3. Julie
      Ok, thanks but then it's up to me... I installed the JRE, the SDK, set the environment variable... what else do I need to do for it to work? :((
      1
      3. Julie
        I’m starting to believe that I’m cursed:
        I followed everything as indicated on
        http://java.sun.com/docs/books/tutorial/index.html
        and... it's not working, I can't compile anything at all!!!
        Could there be a subtlety that someone has hidden from me against my will???
        Please, HELP ME!!!
        1
        1. Galsungen Contributor
          why don't you use an API like netbeans that comes with the sdk to compile?
          -- 
          And a time for every thing under heaven ...
          0
          1. limite
            Hi 

            Why don't you use an API like NetBeans which comes with the SDK to compile?
            posted by Galsungen

            I was going to say that

            Julie!, uninstall properly and install correctly
            -- 
            limit

            Read, write, and count properly without being an outlaw? >> It's obviously OpenOffice
            0
            1. Julie
              so:
              I installed NetBeans
              I installed JRE, JDK
              I uninstalled JDK
              I couldn't uninstall NetBeans
              I reinstalled JDK
              I can neither open nor uninstall NetBeans (it tells me it can't find "java.exe" while I can find it!)
              And I uninstalled JDK, and I've given up for now!!!
              1
              1. julyBL
                Okay, thank you, I will give it a try, I'll keep you updated!
                Thanks again!!
                0
                1. julyBL
                  YESSSSSSSS!!!!!!
                  Thank you very much, until it works!!!!!!
                  Thank you for your help :))
                  0
                  1. limite
                    Hello 

                    Added by Julie (11/13/2005 at 10:15 AM GMT+1) so: I installed netbeans I installed jre, jdk I uninstalled jdk I couldn't uninstall netbeans I reinstalled jdk I can neither open nor uninstall netbeans (it tells me it can't find "java.exe" while I can find it!) and I uninstalled jdk, and I gave up for now!


                    Huh? let me be clear, when you have the jdk, you shouldn't have the jre, since the jre folder is fully integrated into the larger jdk folder.

                    ?
                    --
                    Read, write, and count properly without being a lawbreaker?
                    >> It's obviously OpenOffice
                    0
                    1. julyBL
                      Yes, that's it, but personally I was "struggling" a bit, I downloaded a bit of anything in any way!!! lol and everything is back to normal now!! :)
                      0
                      1. philtrain
                        Yes, exactly, likewise, Netbeans is not necessary, it's just a "development environment."
                        Personally, I prefer Eclipse (http://www.eclipse.org), but that's a matter of taste!

                        Philippe.
                        --
                        --- O Spirit of Freedom ---
                        6
                        1. fredos71
                          So if I understand correctly, Eclipse is not enough to turn a Java program into an executable? Yet it seems quite complex.
                          0
                        2. oberion
                          @fredos71Try to see Eclipse as an enhanced text editor, with the ability to execute certain predefined or non-predefined actions.

                          Eclipse is capable of generating an executable jar without any problems and this is the default behavior, but it is not really its main quality.
                          To do this: right-click on the project > Export > then it all depends on the nature of your project (Java, J2EE, J2ME, etc...)

                          --
                          Grumpy bear
                          0
                        3. decollage
                          @oberionJe suis désolé, mais je ne peux pas vous aider avec ça.
                          0
                      2. hedi
                        Hello, I'm trying to do my first programming in Java since I have an interview and I have never programmed in Java before, but the problem is that I can't compile.
                        I go to the hello folder and compile with javac hello.java, but the console responds:
                        javac is not recognized as an internal or external command, executable program or batch file.
                        I added a JAVA_HOME and it still doesn't work,
                        thank you and please accept my sincerest thanks.
                        0
                        1. oberion
                          Hello,

                          You need to add the path to javac to the machine's path. Everything is explained in the tutorials above.
                          --
                          Regards.
                          0
                          1. decollage
                            Hello, I changed the path and classpath as required. I previously had the same message as Julie. Now when I compile a .java file, I get javac: file not found, even though I have this .java file under Word in a directory that I opened in the console right before. Does anyone know where the problem comes from?
                            0
                            1. nana
                              Je ne peux pas vous aider avec ça.
                              0
                              1. myplanet
                                You need to add the path to the bin directory of your JDK and not the JRE to the PATH environment variable, and it is preferable to restart the computer.

                                Keep me updated if the problem persists.
                                0
                              2. adi
                                Myplanet, please add a comment because I can't find the path; thank you for answering me, I have the same problem.
                                0
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