thanks - it worked

Thank you!

How to fix the 1st step, on Windows 7.
"1.From the desktop, right-click My Computer and click Properties."
0.1 press start, A.K.A. windows button on keyboard.
0.2 locate "computer", should be in left middle.
0.3 press right mouse button on "computer".
0.4 press properties from the option pane.
0.5 see step 2 and so forth.

Thanks so mush i changed it for a file and the file dident work so i wanted the orignal back so yha thanks

WINDOWS 7 ROCKS!!!!!!!!!

I have just upgraded my wifes' computer from XP Pro to Win7 Pro 64. This was done with the aid of PC Mover. Her original O/S drive was "I", but it is now "C". The other drives also had their designation changed. How can I set a path to reflect these changes so that her original programs and data are accessible?
Thanks for your assistance.

I'm trying to change the path so I can find my compilers

Windows 7 has been on this box about 3 months, and is about to get heaved.

Everyone says :right click "my computer" on the desktop; I can't find "my computer" anywhere

Thanks for quick help. Many thanks.

I was trying to install PHP so had to change the path variable, but could not save the original path and I mixed up the thing, now I need to set my path with the original values.

have no idea what to do.

please give me a solution

thankx

would like to know how I can reset my values to the original values

I would like to the java programing

Excellent, great explanation, nice and simple! Cheers....

I found this post to be very informative & helpful, as well, and greatly appreciate the insight and support of the GWB community. However, in my experience, accessing the Windows Path varied slightly from what is described here. I'm running Windows 7 Pro on an out-dated Sony VAIO box, FYI, though I doubt the box-type matters much in terms of the variation I found.

That said, I did right-click on 'My Computer'. However, this prompted more of a shortcut to '\Control Panel\System'. Therefore I present my steps JIC anyone else, like me, finds themselves looking at a screen not described in the original set of instructions as provided by admin @ 20091021.0754. Thanks in advance, again, for this website, as it is full of great insight and support for super-user "n00bs" like myself. I find the instructions and guidance to be thoughtful and well-written, not too über or elitist.
[Note for users like myself: It is very important to understand that changes made to System Properties under 'Environment Variables' are changes made to your PC which can potentially alter the way your system functions. It is always advisable, IMHO, to create a Restore Point prior to making any System changes. "An ounce of prevention..."

SscoootzZ Instruction Remix (props/cred to admin):

1. From the Desktop, right-click on 'My Computer'.
*This action brings me to 'Control Panel\System' screen with "View basic information about your computer" at the top.*
2. In left pane, click 'Advanced System Settings'.
*This action invokes the 'System Properties' GUI console with various tabs, 'Computer Name,' 'Hardware,' etc.*
3. Select the 'Advanced' tab.
*This action reveals settings options for 'Performance,' 'User Profiles,' and 'Startup & Recovery'.*
4. Select 'Environment Variables'.
*This action opens the 'Environment Variables' for the current logged user.*
5. Under the heading 'System Variables' scroll down to 'Path' and highlight it. Then click 'Edit'.
*This action will invoke the 'Edit System Variable' GUI.*
* !!NOTE!! Do not alter the entry @ 'Variable Name'. If you do not wish to edit your 'Path' variable click 'Cancel' to back out of the process without enacting any changes.*
*Note: There are no spaces in the 'Path' variable entry.*
6. Under the input field, 'Variable Value' enter the desired additions or changes to 'Path'.
*For this entry it is crucial to enter the data 100% accurately. The OS does not interpret the value, it must be entered exactly as scribed in the hard disk file structure in order for 'Path' instructions to be followed.*
7. Click 'OK' to authenticate the 'Path' change(s).

Fín

Namasté,
SscoootzZ

Way better solution is to create your own PATH in the User Variable section, it will be appended to the System path when that user is logged in. Less chance of messing something up, as vindy found out.

Thanks a lot for the detailed explanation. I have made the necessary changes and I still get an error message.

The changes that I have done are:
Variable name: PATH
Variable value: C:\Program Files\Java\jdk1.6.0_22\bin

The program compiles ok but when I run the program, I get the following error:

D:\Java>javac book.java

D:\Java>java book.java
Exception in thread "main" java.lang.NoClassDefFoundError: book/java
Caused by: java.lang.ClassNotFoundException: book.java
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)
Could not find the main class: book.java. Program will exit.


Please let me know what else needs to be changed
Thanks

Thanks, it is working.

Use http://www.redfernplace.com/software-projects/patheditor/

I was downloading Java JDk for my cpu. I went to set the path and replaced it with what I wanted to tag on the end. How can I go back and fix this? I don't know what it was originally.

First of you may reset it to the original setting to:

Windows XP: C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;{plus program paths}
Windows 7: C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;{plus program paths}

Alternatively you could look for some previous version of the path in the registry. In Windows 7 you would look for "Path" name under Computer\HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Session Manager\Environment. If you do not see the previous version of what you would expect, continue down the list "ControlSet002", "..03", etc. The current version will be under Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\....

Open the registry by typing "regedit" in the command line to get to then regitry.

One thing to note, I also came here looking for help on installing the Java development kit. I had to restart my computer before it registered the changes to the path.

You can check if you've got the path set up right (for jdk) by opening a command window and typing "javac" and hitting enter (don't actually type the quote marks). If the path isn't right yet, it'll say:
""'javac' is not recognized as an internal or external command, operable program or batch file."

i tried this but there is still an 'application extension' by the same name. This does not get deleted. Is this ok..?

Thanks heaps SscoootzZ for adding great detail, much appreciated.

Thanks very useful for me.

Thanks a lot SscoootzZ info helps me a lot

Thanks for the help on a frustrating MS to iTunes QT error! Easy instructions even for a non-geek:)

Thanks for the help on a frustrating MS to iTunes QT error! Easy instructions even for a non-geek:)

i wrote the command where the java is installed and still not working need help plz

I installed the download and install MS HPC SDK
from
http://www.microsoft.com/downloads/en/details.aspx?FamilyID=12887DA1-9410-4A59-B903-693116BFD30E
I added PATH for run my prog.cpp under windows
my Q's how I can compile my mpi program under windows

The original answer above is wrong. The answer shown is for Windows XP, not Windows 7. In Windows 7, if you have the Computer icon on the desktop, you must LEFT click it twice, then select Advanced system settings, then you can select the Advanced tab, then the Environment variables button. Windows 7 works a little differently than Windows XP with the Computer icon.

Correction, double left click the Windows 7 Computer icon, select System Properties, then select Advanced System Settings, then select Advanced Tab and Environment variables.

Thank you for the tips, but they haven't changed it since Windows XP. Doing the same things you can set the windows path in Windows XP also. I will post here how to make a registry entry that does that automatically. That won't make your life simpler, but you'll learn how to toy around with Regedit.

Thank you for the tips, but they haven't changed it since Windows XP. Doing the same things you can set the windows path in Windows XP also. I will post here how to make a registry entry that does that automatically. That won't make your life simpler, but you'll learn how to toy around with Regedit.

or just hit the start button, type in "environment variables" and it should bring up something you can click that says "Edit the system environment variables"

I was downloading Java JDk for my cpu. I went to set the path and replaced it with what I wanted to tag on the end. How can I go back and fix this? I don't know what it was originally.

Way better solution is to create your own PATH in the User Variable section, it will be appended to the System path when that user is logged in. Less chance of messing something up, as vindy found out.

Hey great stuff, thank you for sharing this useful information and i will let know my friends as well.

I am able to set correct path in acount with administrative privelege, but when I use an user account where I still see the correct path variable
(like right clicking properties, and then see environment variable in advanced setting), I still see error when I try to launch a compiler.

nothing happened.. its still showing the error "'javac' is not recognized as an internal or external command, operable program or batch file."

i have removed all the paths by mistake how to get back all these back

Thanks a lot for the detailed explanation. I have made the necessary changes and I still get an error message.

The changes that I have done are:
Variable name: PATH
Variable value: C:\Program Files\Java\jdk1.6.0_22\bin

The program compiles ok but when I run the program, I get the following error:

D:\Java>javac book.java

D:\Java>java book.java
Exception in thread "main" java.lang.NoClassDefFoundError: book/java
Caused by: java.lang.ClassNotFoundException: book.java
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)
Could not find the main class: book.java. Program will exit.


Please let me know what else needs to be changed
Thanks

hey i am not able to set path... i followed all the steps and reached till the variable value ..i am wondering what to enter in place of the existing value... please help me

Please help me to resolve my problem....

Thank you..

Thanks Its working....:)
Those who guys doent,Set the path correctly..and dont forget to put semicolon at the end of the path(variable value)

PATH tells the OS where to find Java. If you get an error message like "java.lang.NoClassDefFoundError: book/java", it means you set up PATH correctly (because the message comes from Java, not the OS.) The nicer, easier way is to check PATH is to type
javac -version

OK, so if PATH is working, what is the problem? You have to compile java code into an executable for a Java machine. (The executable is also called "byte code" and "class files"; the Java machine is also called a JVM.) A dot on a Java machine is folder path delimiter. book.java = book/java. So ...

(compile first, you are still on your native OS, so the dot is just a file extension.)
javac book.java
(then start JVM and run the class, now you are in a Java machine, so the dot is a folder delimiter.)
java book
Now you have to set up CLASSPATH or use

Very helpfull, thanks

i have just installed jdk-7-windows-i586 on my windows 7 i couldn't configure. pls help me how to run a simple pgm in it .It installs into Program Files (x86).

The positive comments and do well wishes are very motivational and greatly appreciated.

thanx for give me a solution

In my specific case, I changed my D: drive to K:. Just before the QuickTime statement it was trying to pull up an AMD utility on the D: drive. Removing that statement worked like a charm.... itunes is up and running again!

It really helped. Thanks a lot.

The path is fine but when I run programs like Dr. Java it says that there is no compiler. I have an assignment due at in 8 hours and I doubt I will get it in on time but it would be nice to know how I can fix this.

Hey its been really a very good and informative post to read on. I will keep these points in my mind from now onwards, hope will not commit mistakes

Hey its been really a very good and informative post to read on. I will keep these points in my mind from now onwards, hope will not commit mistakes

isn't it same like earlier version of windows ?

thanks!! it was really helpfull!

Thanking
to help me

There is a perfect environment variables editor - RapidEE. Must have - http://www.rapidee.com

Thanks for the info. I needed to set the path so I could access the java compiler directly for my CS 161 class.

Can anyone help me? I have recently messed around with my laptop, as my son needed Java JDK set up, and I changed the path system, but now nothing that runs on Java will work!
What I did was change the path under Environment Variables in My Computer. All I want is to find out my original path. Please help!
I am running on Windows 7 64 bit, using a Dell Inspiron.

Hey thanks for all this information makes me very happy inside tha tyou took the time to get it out to us

This post has been somewhat of a revelation to me.

I really wish I hadn’t seen this as I really want one now!

I just required some information and was searching on Google for it. I visited each page that came on first page and didn’t got any relevant result then I thought to check out the second one and got your blog. This is what I wanted!

Yes Windows 7 environment variables are same as with earlier versions.

Build Path with Eclipse

This is great and I hope the users are having a great experience and being able to deliver more in less time.

How to set the windows path in Windows 7

I love this site so much right now, I've been having this problem for days, the amount of times I've looked at the monitor and thought about putting my head through is unbelievable. Thank you so much for sharing this knowledge.

Very interesting. Thank you for sharing and merry christmas

I think when java is working and javac is not working we have to follow the above instructions, Am i right??

I think when java is working and javac is not working we have to follow the above instructions, Am i right??

How to set the windows path in Windows 7..... i have to do assembly language programs... help me

Thank you, I have recently been searching for information about this topic for ages and yours is the best I have discovered so far.

i setup windows 7 from a while and after reading your article and do what you say , its work good .thanks

Very interesting. Thank you for sharing and happy New Year!

Very good tutorial and good explanation.
Thanks for such a detailed tutorial

I am not yet familiar with windows 7, yet this guide will help me for sure through the process.