Someone please help me with java!

Ok, so im supposed to type the infamous Hello World

here is my code

class myfirstjavaprog
{
public static void main(String args[])
{
System.out.println("Hello World!");
}
}

so i installed Java jdk 1.0.6_16, after installing i went to my variable settings and added jdk1.0.6_16bin to paths well now i wrote the code saved as all files format on desktop, went to javac on cmd typed javac Helloworld.java

and it says its not recognized? Any ideas?

Ok, so im supposed to type the infamous Hello World

here is my code

class myfirstjavaprog
{
public static void main(String args[])
{
System.out.println("Hello World!");
}
}

so i installed Java jdk 1.0.6_16, after installing i went to my variable settings and added jdk1.0.6_16bin to paths well now i wrote the code saved as all files format on desktop, went to javac on cmd typed javac Helloworld.java

and it says its not recognized? Any ideas?

xfactor19990

It is convention to write the filename after the public cla$$ (sorry for some reason I can't write the word becuase it messes with Gamespot javascript codes but you know what I mean) the same name you are giving the file. So change it to HelloWorld or you could change the original filename to myfirstjavaprog.

I learned Java last year. What compiler are you using? I used Blue J (terrible compiler btw), and in that all I had to do was run the main method and it would work fine. I don't see any errors with your syntax, so it's probably due to the compiler or your class names.

This is most likely a probably a problem with the compiler pathname. You need to set the path for the compiler to compile the program. Number 4 of this webpage should help you out. http://java.sun.com/javase/6/webnotes/install/jdk/install-windows.html#Environment

my teacher is making me go through the cmd, so im putting cd desktop Javac Helloworld.java and its unrecognizedxfactor19990

I can possibly still help you but first just want to ask a few questions.

1. Why are you changing to the desktop and then compiling.

2. By 'go through the cmd', what do you exactly mean?

Also provide what your command line prompt looks like and show each command line (the entire thing)you do.

anyways here i go Helloworld.java is on my desktop so my teacher told me i had to switch to desktop, secondly here we go i mean i go to start run CMD then once im in there i go cd desktop dir (shows my stupid java file) then javac Helloworld.java (errors)xfactor19990

C:\Program Files\Java\jdk1.6.0_16\binxfactor19990

Just to clarify You put your helloWorld.java program into your bin folder and ran C:> \Program Files\Java\jdk1.6.0_16\bin\javac HelloWorld.java and gave you back the response: 'javac' is not recognized as an internal or external command. Also make sure your in the right directory. It starts out in Documents and Settings and you need to be in Program Files.

Well, if you have already left the forum then I'll leave with some helpful tips (plus where I live its really late and I'm tired).

There is a tutorial provided by Sun (the makers of Java) for writing the Hello World which uses the command prompt your using:

http://java.sun.com/docs/books/tutorial/getStarted/cupojava/win32.html Go through it and follow it closely.

For other tips I can give.

1. Make sure that the java file is inside the bin folder of the Program_FilesJavajdk.... bin. If the file is not inside the java folders then the compiler can't read it.

2. Make sure when typing pathnames to make that the filepath is typed correctly.

3. Also I don't know if you changed your filename to match the public cla$$ name. Make sure to do that eventually.

Ask your teacher about the problem if none of these suggestions help you out.

Sorry I wasn't much help.

ok update, so i just tried same steps as to what i was doing on XP and it worked, is there something wrong on vista? imean it flat out denies any codes like if you go to cmd and type javac it just says unrecognized

ok update, so i just tried same steps as to what i was doing on XP and it worked, is there something wrong on vista? imean it flat out denies any codes like if you go to cmd and type javac it just says unrecognized

xfactor19990

wow man this much trouble with this?

ya, dude no matter what vista will not run it, and i have tried everythig on the guides, no its just going crazyxfactor19990

There is a guide here for Vista OS users: http://ryan.ifupdown.com/2008/12/04/environment-variables-in-windows-xpvista/. Use it for the time being for your Vista OS. It's probably fine to just do leave at this for now but for larger projects in Java, that include a lot of files, make sure to ask your teacher how to setup the environment variables correctly.

well ya but my computer is not showing class pathxfactor19990

Try to run it again with Vista and type the classpath as well as the javac command: C:\Program Files\Java\..(Make sure to put the correct classpath I'm just guessing what it might be)...\bin\javac HelloWorld.java. If it doesn't work then you could try copying how your XP OS (don't change any of environment variables) has its environment variables set up and modify them likewise in Vista (taking into account differences in where you place your Java stuff).

If those methods don't work then I would suggest doing all of your programming through XP for the time being. You could ask your teacher if he/she can help you out with setting it up in Vista or you could post on sun's forums and I'm sure one of the people there could help you. I'm unsure of how to help you any more since I mostly use a Solaris Unix shell for my java stuff. Sorry.