Re: javax.swing.JTable.print()

From:
Lew <noone@lewscanon.com>
Newsgroups:
comp.lang.java.programmer
Date:
Thu, 06 May 2010 07:49:27 -0400
Message-ID:
<hruac5$c1v$1@news.albasani.net>
On 05/06/2010 02:55 AM, beowolf wrote:

this code works as expected when it's inline in the program:
(jTAfd is "public static javax.swing.JTable jTAfd;"):

try {
    jTAfd.print(JTable.PrintMode.FIT_WIDTH, null, null);


Here the variable is declared as 'JTable', presumably. You don't show the
code so we have to hope you declared it correctly.

} catch (Exception pe) {
    System.err.println("*** Error printing: " + pe.getMessage());
}

when I try to make it as a routine (whit the table to be printed
passed as parameter):

Component componente = null;
componente = jTAfd;
myPrint(componente);
....
void myPrint(Component c){


Here, 'c' is declared as 'Component', and that type does not have the method
overload you try to use.

    try {
        c.print(JTable.PrintMode.FIT_WIDTH, null, null);
    } catch (Exception pe) {
        System.err.println("*** Error printing: " + pe.getMessage());
    }
}

it does not compile:
... print(java.awt.Graphics) in java.awt.Component cannot be applied
to
(javax.swing.JTable.PrintMode,<nulltype>,<nulltype>)
c.print(JTable.PrintMode.FIT_WIDTH, null, null);

why does javac picks up print(Graphics) instead of
javax.swing.JTable.print(); ?


Because 'c' is a 'Component' variable, not 'JTable'.

I've tried almost all reasonable includes, can anyone help me ?


What do you mean by "includes"?

The compiler has no way to know the run-time type of 'c'; it has to work only
with the compile-time type.

You also should not mix AWT components and Swing components.

--
Lew

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