javac is not recognized as an internal or external command error

[learning_grjava]

I installed jdk and wrote my first program on notepad. When I try to compile with command "javac *.java" it shows "javac is not recognized as an ..........."
Then after reading some threads, I changed the path in Environment Variables, now it shows

Javac : file not found : *.java
usage : javac <options> <source file>
use - help for a list of possible options.

So I don't know where I'm wrong now. Where should I save *.java file?

Thanks in advance

[Norm]

The OS can not find the javac command. You need to add the path to the folder containing the javac.exe file to the PATH environment variable.
The PATH environment variable is set from the Settings | Control Panel | System panel.
Select the Advanced tab and
Click on the Environment variable's button.
At the bottom in System Variables, find the PATH entry and click the Edit button
Add the new path using ; to separate it
Its a stupid small text field so be careful.

[learning_grjava]

Thanks. So after I set the variable can I save *.java file anywhere in my computer? Or it should be in some particular folders?

[JosAH]

I installed jdk and wrote my first program on notepad. When I try to compile with command "javac *.java" it shows "javac is not recognized as an ..........."
Then after reading some threads, I changed the path in Environment Variables, now it shows

Javac : file not found : *.java
usage : javac <options> <source file>
use - help for a list of possible options.

So I don't know where I'm wrong now. Where should I save *.java file?

Thanks in advance

There is no .java file in the directory from where you started javac. Your path variable is set correctly (otherwise the OS couldn't have found the javac.exe file). Change your directory to where your .java file is stored and try again.

kind regards,

Jos

[sunde887]

If you don't know how to navigate on command line, use cd to move to the right directory(where the file is located), and then try executing

javac -cp . *.java

[AUSTINDAN]

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\MAHE>javac
'javac' is not recognized as an internal or external command,
operable program or batch file.

[Norm]

Did you miss this post in #2 ???

The OS can not find the javac command. You need to add the path to the folder containing the javac.exe file to the PATH environment variable.
The PATH environment variable is set from the Settings | Control Panel | System panel.
Select the Advanced tab and
Click on the Environment variable's button.
At the bottom in System Variables, find the PATH entry and click the Edit button
Add the new path using ; to separate it
Its a stupid small text field so be careful.

[Fisty]

So I entered into the System Variables ;C:\Program Files\Java\jdk7.0_03\bin\javac

and it still gives me the same answer when I am trying to convert java into a class file
what have I done wrong?

[DarrylBurke]

So I entered into the System Variables ;C:\Program Files\Java\jdk7.0_03\bin\javac

and it still gives me the same answer when I am trying to convert java into a class file
what have I done wrong?

Which system variable?

If you can't express yourself clearly and just post vague reports of your actions, it's not going to be possible for anyone here to help you.

Lesson: Common Problems (and Their Solutions) (The Java™ Tutorials > Getting Started)

db

[Norm]

Did you read this:
You need to add the path to the folder containing the javac.exe file to the PATH environment variable.

You said you added:
;C:\Program Files\Java\jdk7.0_03\bin\javac

Is javac the folder containing the javac.exe file?

[Arcanexanth]

So I'm having the exact same problem and I've triple checked everything.

Java_Home: E:\Program Files\Java\jdk1.7.0_03\bin
Path: ;%Java_Home%;

Computer will not see javac unless I'm in it's folder but I can't run my project from there.

Also tried path: ;%Java_Home%\bin;

[Norm]

Open a command prompt window and enter: Path
copy the contents here
To copy the contents of the command prompt window:
Click on Icon in upper left corner
Select Edit
Select 'Select All' - The selection will show
Click in upper left again
Select Edit and click 'Copy'

Paste here.

[Arcanexanth]

I reinstalled JDK and that fixed it. But now after I ran javac and the program it made a class and I run that and it doesn't return with passed arguments, I'm new to java, yet when I run it with Netbeans it works.

[Norm]

Post the console that shows the problem. Add comments to the post saying what the problem is.

[Arcanexanth]

E:\Users\George\Documents\NetBeansProjects\DumpArg s\src\dumpargs>java DumpArgs
Exception in thread "main" java.lang.NoClassDefFoundError: DumpArgs (wrong name:
dumpargs/DumpArgs)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknow n Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unkno wn Source)

I type java DumpArgs and it gives me that ^

[Norm]

DumpArgs (wrong name: dumpargs/DumpArgs)

You have a package statement putting the class in a package: dumpargs
Remove that or change how you use the java command to use the package name with class name.
java dumpargs.DumpArgs
from the folder that contains the dumpargs folder

[Arcanexanth]

Netbeans automatically put it in a package, how do I stop it from doing that?

[Norm]

Sorry, I don't use your IDE.

[Arcanexanth]

Ok well, thank you anyways, I'll figure something out now.

Ok so I just put in a text program and saved as .java since I'm learning Java at this point.

[Tolls]

That's the best way.
Or you could use Notepad++ (google for it) which is a text editor, but it does code highlighting for you making it slightly easier to see what you;re doing.
You still need the command line to compile.