JOptionPane problems

[James Brooks]

Hi all,

If mySB is a stringbuffer, what is wrong with the following declaration? Error messages are:
C:\Documents and Settings\Owner.Mynotebook\Ch5ItIs\src\ch5itis\Chapter7Strings.java:29: <identifier> expected
JOptionPane.showMessageDialog(null, "The user ID is " + mySB);
C:\Documents and Settings\Owner.Mynotebook\Ch5ItIs\src\ch5itis\Chapter7Strings.java:29: illegal start of type
JOptionPane.showMessageDialog(null, "The user ID is " + mySB);
2 errors

 
JOptionPane.showMessageDialog(null, "The user ID is " + mySB);

[marc weber]

Originally posted by Patrick Brooks:
...what is wrong with the following declaration? ...

It's not a declaration -- it's a method call. Nothing is wrong that that line of code, but it needs to be inside the body of a method.

import javax.swing.*;
 
class OptionCall {
 
  //won't work here
 
  public static void main(String[] args) {
    StringBuffer mySB = new StringBuffer("abcdefg");
 
    //works inside method body...
    JOptionPane.showMessageDialog(null, "The user ID is " + mySB);
  }
}

[James Brooks]

It was inside valid code, but when I closed NetBeans and reopened, it compiled and ran just fine. Strange.


-Patrick