----------------------------------------------------------------------------
This tutorial assumes you have the Java JDK downloaded properly. If not, you can follow this tutorial.
OK, so you have the Java JDK installed but now we need to test it out. We'll start out my creating a java file that prints out 'Hello World'. Open notepad and copy in the following code:
public class HelloWorld{
public static void main(String[] args){
System.out.println("Hello World!");
}
}
Save it somewhere temporary such as your desktop:
FileName: HelloWorld.java
Save as type: All Files(*)
cd C:\Users\UserName\Desktop
javac HelloWorld.java
If you see no error after hitting enter, then your Java JDK is installed and configured correctly. If you the folloring error, then we still have some work to do. I received the following error after typing 'javac HelloWorld.exe':
c:\Users\Yousef\Desktop>javac HelloWorld.java
'javac' is not recognized as an internal or external command,
operable program or batch file.
No problem. This is because we haven't told our computer where the Java JDK is. Now let's fix this problem.
We'll start by finding out where we installed the java jdk bin folder is. The default location is:
C:\Program Files\Java\jdk1.7.0_05\bin
Of course, you may have a different version of the Java JDK.
Now go to Start>Right Click on Computer> click Properties:
Then click on Environment Variables:
On System variables, go down to path and click edit:
At the end of Variable value, add to the text the location of the bin Java JDK folder:
Click OK for all windows we just opened.
Now we try to compile our HelloWorld.java file again. Re-open 'cmd.exe' and type the collowing command, where UserName represents your windows username:
Click enter and enter the follow command:
javac HelloWorld.java
java HelloWorld
If all goes well, you should see the text "Hello World!" display on the command prompt:
