Can someone tell me whats wrong with this code? I'm new to Java.

[Dan2929]

I'm completely new to Java (just started today); i have some experience with C and HTML, but really nothing else. I recently purchased a book called "Learning Java", published by O'Reilly. The first application in the book is of course called "Hello Java", in which a frame is made and the text "Hello Java" is supposed to be printed. However, after typing in the code and trying to compile the program, I get the following error:

----------------------------------------------------------
HelloJava.java [5:1] cannot resolve symbol
symbol : constructor JFrame (java.lang.String)
location: class JFrame
JFrame frame = new JFrame("Hello Java!"
^
1 error
Errors compiling main.

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Again, since i'm a beginner, I have no idea what I've done wrong, or what this error means. If anybody has a clue as to what I have done wrong in my code, I would appreciate it greatly to know. The code is below, thanks everyone.


---------------------------------------------------
import javax.swing.*;
public class HelloJava
{
public static void main( String[] args ) {
JFrame frame = new JFrame("Hello Java!"
JLabel label = new JLabel("Hello Java!", JLabel.CENTER );
frame.getContentPane().add( label );
frame.setSize( 300, 300 );
frame.setVisible( true );
}
}

-----------------------------------------------------

-Dan

 

[Dan2929]

By the way, I don't know if it matters, but the compiler I used is something included on the CD that came with the book, its called NetBeans.

 

[ADoozer]

hi there.... im new to java too (2 days) but i cut and pasted your code saved it as HelloJava.java and ran it in jbuilder 3 and it works.... could it be your package hasnt installed properly...

what location did you install it to (apparently files with spaces in them eg "program files" can cause problems[source:jbuilder documentation])?
or maybe the standard class's arent registered?!?!?!

not much but i hope it gets you started!

 

[pedrosolorzano]

Hi Dan:

It is ok, try to compile it with the jdk from sun. you can download it from:

http://java.sun.com/j2se/1.4.1/download.html

I don't know which jdk version use NetBeans, it must be the problem.

Hope it helps
Pedro Andrés Solorzano
Pontificia Universidad Javeriana
Bogotá, Colombia, SurAmérica.