Always return "Image Object" in Toolkit.getDefaultToolkit().getImage();

Question

A : Image source = Toolkit.getDefaultToolkit().getImage("C:/aa.jpg");
B : Image source = Toolkit.getDefaultToolkit().getImage("");
generally, B may be null. but it is not null.
so I look at "javax.swing.ImageIcon" class :
<Part of ImageIcon source>
public ImageIcon(String filename, String description) {
     image = Toolkit.getDefaultToolkit().getImage(filename);
if (image == null) { //This code is invaild.
return; //never return.
     this.filename = filename;
this.description = description;
     loadImage(image);
Do you thinking it?
Bug?

Answer 1

getimage may not return null in the current implementation but they wanted maybe get sure that no nullpointerexception occures.
it's not a bug - it's a feature :-)