Why do I need to put spaces in here?

Question

I wrote a section of code like this:
// increment the count each time countJButton is pressed
private void countJButtonActionPerformed( ActionEvent event )
countJTextField.setText ( String.valueOf(
1 + Integer.parseInt(countJTextField.getText())));
} // end method countJButtonActionPerformed
I was able to compile and run with no errors but the code did nothing in the program. I then placed spaces in between the brackets like this:
countJTextField.setText ( String.valueOf(
1 + Integer.parseInt(countJTextField.getText() ) ) );
and it runs. I thought Java is suppossed to ignore white space. So why does the first example not run and the second one run? What is the rule I need to know to do this correctly. (The books don't tell me and my instructor doesn't know).

Answer 1

No nothing else was changed. I used javac to compile and got no errors. I then ran the program java Application. The application did nothing. I went back put in the spaces and resaved. javac to compile new and java Application to run and it works.
Further I took the assignment to class. Class and teacher looked at it and could find 'nothing' different between there programs that ran and mine that didn't expect the spaces so I got the recommendation to try the spaces.
The jdk I'm presently using came with the course book (Dietel's Simply Java Tutorial approch), which is j2sdk1.4.1_02. I have 1.5 on another Dietel book (How to program Java, 6th edition) I tried to compile a program from the 2nd book and recieved all kinds of errors. Sent a email to Dietel who advised me that the programs in the 2nd book were written to work with Java 5. I'm concerned about installing Java 5 and maybe not having it work on teh Simply Jaava Tutorials which make up the bulk of the course.
All comments are appreciated.