Elementary problems

I am an old timer trying to refresh my working of Java and I have installed java 2 since I had the Book and CD for it. If I succeed in using it I will update to java 6.
2. I have written the following code in the notepad and saved it to c:\jdk1.2.1\bin with the file name "hello.java" and I can see a file by name 'hello' is in the bin folder.

class HelloWorldApp {
public static void main(String[] args) {
System.out.println("Hello World!"); // Display the string.
}
}

3. Then I go to DOS and go to the directory jdk1.2.1\bin and enter the following

javac hello.java

4. Here I get the message that the program cannot be opened in DOS.
5. Perhaps I have not followed the correct steps. I shall be grateful for any advice.

6. I am on win98 although I have dual booting with winXP.

by DOS, do you mean the command prompt?
not too sure about this, but i don't think java works in 16-bit DOS.

I restarted win98 in ms-dos mode for working on java.

how do i deal with "invalid path"?

i'm new to this java thing.. wud u people help to teach me bout this programming language?.. actually i learned some basics.. but i'm way too far..

noobie, you may wish to start your own thread rather than stepping on mgm2010's thread.

Also, most here will be happy to answer direct questions, but actually teaching someone is likely out of the abilities of the members of this or any forum.

mgm2010, as stated above in the second post, i don't believe java works in 16-bit dos. you should use the command promt in windows.