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Thread: Problem of executing java.exe. How to code from absolute scratch?

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    Default Problem of executing java.exe. How to code from absolute scratch?

    I've been reading herbert schildts "java for beginners" and it says in order to compile raw code, i should open javac.exe, and type in x command.

    however when i load javac, it appears, loads up the help console, but disappears before i can do anything. i've tried running it as an administrator, i've tried turning my antivirus software off, but nothing makes a difference.

    Up to now i've been using the netbeans IDE to do all of my coding, but i wanted to learn how to code from absolute scratch.

    Any help would be much appreciated.

    Simon


  2. #2
    mmm.. coffee JavaPF's Avatar
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    Default Re: javac.exe problem

    Hey sepalm,

    Please take a look at these links. It should help:

    javac.exe : Java Glossary

    "Hello World!" for Microsoft Windows (The Java™ Tutorials > Getting Started > The "Hello World!" Application)

    If you are still having problems after reading this then reply here and we will see what we can do...
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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    Default Re: javac.exe problem

    Quote Originally Posted by sepalm View Post
    I've been reading herbert schildts "java for beginners" and it says in order to compile raw code, i should open javac.exe, and type in x command.

    however when i load javac, it appears, loads up the help console, but disappears before i can do anything. i've tried running it as an administrator, i've tried turning my antivirus software off, but nothing makes a difference.

    Up to now i've been using the netbeans IDE to do all of my coding, but i wanted to learn how to code from absolute scratch.

    Any help would be much appreciated.

    Simon


    if you are using windowsxp~ you can do -> run -> cmd -> javac - parameters.

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    Default Re: javac.exe problem

    Unfortunately i'm using vista.

    I've got the same tutorials pretty much, problem is, executing javac.exe.

    C:\Program Files\Java\jdk1.6.0_03\bin\javac.exe

    I open it, and the cmd prompt opens, displays (what i presume is the help console) and disappears before i can type anything.

    Any ideas? wouldn't be anything to do with not having the most up to date java would it?

    Simon

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    mmm.. coffee JavaPF's Avatar
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    Default Re: javac.exe problem

    Quote Originally Posted by sepalm View Post
    Unfortunately i'm using vista.

    I've got the same tutorials pretty much, problem is, executing javac.exe.

    C:\Program Files\Java\jdk1.6.0_03\bin\javac.exe

    I open it, and the cmd prompt opens, displays (what i presume is the help console) and disappears before i can type anything.

    Any ideas? wouldn't be anything to do with not having the most up to date java would it?

    Simon
    Im not sure if you can run javac.exe like that. I think you need to open a command window (Start > Run > CMD) and navigate to:

    C:\Program Files\Java\jdk1.6.0_03\bin\

    using the 'cd' command to change directories then type javac.exe

    It should load up OK then...
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    Default Re: javac.exe problem

    I apologise for being a dunce, as i've only used IDE's i never knew that.

    Thanks alot for the help

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    Default Re: javac.exe problem

    No problem!

    If you have any further questions then be sure to post back
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    Default Re: javac.exe problem

    Quote Originally Posted by JavaPF View Post
    Im not sure if you can run javac.exe like that. I think you need to open a command window (Start > Run > CMD) and navigate to:

    C:\Program Files\Java\jdk1.6.0_03\bin\

    using the 'cd' command to change directories then type javac.exe

    It should load up OK then...
    If you have setup the classpath correctly you can type javac instead of going to the java directory.

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    Default Re: javac.exe problem

    how do i set it up so that i dont have to cd C:\(path) every time i open cmd to compile?

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    Default Re: javac.exe problem

    It should have been done automatically when you install java but if not you can set it in your enviroment variables setting like this:

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    Default Re: javac.exe problem

    Please use [highlight=Java] code [/highlight] tags when posting your code.
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    Default Re: javac.exe problem

    Hmmm, not sure if Vista is different, i have opened the env vars, and there was no JAVA_HOME, so i've added a new one, called JAVA_HOME, and given it the classpath of C:\Program Files\Java\jdk1.6.0_07

    but when i open cmd still gotta use cd to use javac, not sure whether that was the purpose of changing the env vars though lol :-(

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    Default Re: javac.exe problem

    There are two things: first is specifying where your system would find javac.exe to execute; second is where your java compiler (or javac.exe) would find classes it needs to compile. Former would be specified in your systems PATH variable and latter would be specified by your CLASSPATH variable.

    To be able to execute javac.exe from anywhere, you must add following information to your system's PATH variable; i.e. you path variable would look like PATH=<path_to_java_installation_folder>/bin;<%other_PATH_variable values%>

    For more information on classpath, refer to following link:
    Welcome to J2EE Concepts - Java

    HTH,
    Anand
    Last edited by anandmohans; November 12th, 2008 at 02:13 AM. Reason: Putting a more readable URL

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    Default Re: javac.exe problem

    Hi,
    just had a go at this and had no joy. Can you explain why you've used the path D:\javaSoft\jdk...

    Thanks
    T