Please can u suggest to rectify the error in the method JOptionPane.showMe

Question

import javax.swing.JOptionPane;
public class Welcome4 {
// main method begins execution of Java
public static void main(String args[])
JOptionPane.showMessageDailog(
null, "Welcome\nto\njava\nProgramming");
System.exit(0);//terminate the application with window
} // end method main
after compiling this i got the error like this
F:\>
F:\>javac Welcome4.java
Welcome4.java:12: cannot find symbol
symbol : method showMessageDailog(<nulltype>,java.lang.String)
location: class javax.swing.JOptionPane
JOptionPane.showMessageDailog(
^
1 error
What shud i do pls suggestme

Answer 1

The first parameter of that method has to be the parent of the message dialog; you pass a null value and the compiler just is too stupid to realize that you intend to pass a special null value Component. You have to cast that null value explicitly: ((Component)null) so that the compiler will keep its mouth shut otherwise it treats a simple 'null' as its own type which is not what you want.
kind regards,
Jos