Solved

Why does my old .class file keep getting regenerated in java?

Posted on 2009-07-02
3
234 Views
Last Modified: 2012-05-07
Hi,

I am new to JAVA and I'm having some difficulties running my program.
I created a new file called Hello.java and saved it on my desktop.
I then typed the command javac.Hello from the command prompt.
The problem i'm having is that its suppose to compile a Hello.class for me
but instead it comiles a previous file which was HelloApp.class

Does anyone know why this happens?
I've installed the jdk6 and added the path to my bin directory.
Thank You.
0
Comment
Question by:techin4
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 59

Accepted Solution

by:
Kevin Cross earned 250 total points
ID: 24766627
How are you compiling?

+double check that Hello.java has class in it defined as Hello instead of HelloApp
+copy the file into folder like c:\temp
+at command prompt do the following:

c:> cd \temp
c:\temp> javac -cp . Hello.java
0
 

Author Comment

by:techin4
ID: 24766848
Hi mwvisa1,

Your absolutely right.
I had HelloApp as the name of the class.
After renaming it to Hello, it compiled a Hello.class for me.
Thanks!
But i have one more question.
I saw you that you posted javac -cp
What does that -cp for?
0
 
LVL 59

Expert Comment

by:Kevin Cross
ID: 24766940
It is shorthand for -classpath which tells java where to find user class files during compilation which is good if you had other classes in your application in the same directory denoted by the '.'.
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

By the end of 1980s, object oriented programming using languages like C++, Simula69 and ObjectPascal gained momentum. It looked like programmers finally found the perfect language. C++ successfully combined the object oriented principles of Simula w…
Java functions are among the best things for programmers to work with as Java sites can be very easy to read and prepare. Java especially simplifies many processes in the coding industry as it helps integrate many forms of technology and different d…
Viewers learn about the scanner class in this video and are introduced to receiving user input for their programs. Additionally, objects, conditional statements, and loops are used to help reinforce the concepts. Introduce Scanner class: Importing…
Viewers learn how to read error messages and identify possible mistakes that could cause hours of frustration. Coding is as much about debugging your code as it is about writing it. Define Error Message: Line Numbers: Type of Error: Break Down…

756 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question