I have started but have some problems

Question

hi :)
Heloo,
1) I downloaded the j2sdk1.4.1
2) I wrote the code in a text file and save it wit the extension .java
3) I wrote this command :
C:\j2sdk1.4.1\bin>javac HelloWorldApp.java
4) this error appeared to me:
error: cannot read: HelloWorldApp.java
5) I tried to remove the ".java" from the command but another error appeared whic is:
javac: invalid flag: HelloWorldApp
Usage: javac <options> <source files>
where possible options include:
-g Generate all debugging info
-g:none Generate no debugging info
-g:{lines,vars,source} Generate only some debugging info
-nowarn Generate no warnings
-verbose Output messages about what the compiler is doing
-deprecation Output source locations where deprecated APIs are u
ed
-classpath <path> Specify where to find user class files
-sourcepath <path> Specify where to find input source files
-bootclasspath <path> Override location of bootstrap class files
-extdirs <dirs> Override location of installed extensions
-d <directory> Specify where to place generated class files
-encoding <encoding> Specify character encoding used by source files
-source <release> Provide source compatibility with specified release
-target <release> Generate class files for specific VM version
-help Print a synopsis of standard options
So .... what is the problem ???
Question: Isnt there a java coder to avoid dealing with DOS, I hope so.. If yes ..where can I get it ?? "the link and the name fro the s/w plzzz".
Thank you very very much....

Answer 1

I want to tell you the complete dtory and tell me the solution for this problem
1) I create a folder, C:java , I intended to save all my java code files inside it.
2) I tried to compile my first java program by writing this command:
C:\java>javac HelloWorldApp.java
3)but this error occured.
'javac' is not recognized as an internal or external command,operable program or batch file.
4) You have gave me this link: http://java.sun.com/docs/books/tutorial/getStarted/cupojava/win32.html, I found the following note:
The name specified is not recognized as an internal or external command, operable program or batch file (Windows NT)
If you receive this error, Windows cannot find the Java compiler, javac.
Here's one way to tell Windows where to find javac. Suppose you installed the Java 2 Software Development Kit in C:\jdk1.4. At the prompt you would type the following command and press Enter:
C:\jdk1.4\bin\javac HelloWorldApp.java
5) I did as the note in the above link says and I changed the old command to this new one:
C:\j2sdk1.4.1\bin>javac HelloWorldApp.java
6) but this error has been occured
error: cannot read: HelloWorldApp.java
1 error
7) AFTER ALL THIS DTORY , HOW CAN I START RUN MY FIRST PROGRAM ????