HTML centering problem

This is a big problem for me as a front-end nerd. Finally...

The following code summarizes the curriculum design of the self.

Out.print ("<table align=center border=2>");                        Out.print ("<tr>");                            Out.print ("<th width=100>" + "Reader's name");                            Out.print ("<th width=100>" + "Social Security Number");                            Out.print ("<th width=100>" + "phone number");                            Out.print ("<th width=100>" + "reader category");                    Out.print ("</tr>");

Why does the indentation change?

<center>                <%                    out.println ("This reader does not exist!!! ");                 %>                </center>

What a sad story ...

Look at the effect ...

It's really obsessive-compulsive before it's centered.

HTML centering problem