code for system default printer to print a file out in java

import java.awt.Desktop;
import java.io.File;
import java.io.IOException;

public class Test {
public static void main(String[] a) {
try {
Desktop desktop = null;
if (Desktop.isDesktopSupported()) {
desktop = Desktop.getDesktop();
}

desktop.print(new File("c:\\a.txt"));
} catch (IOException ioe) {
ioe.printStackTrace();
}

}
}