Today I started learning Java GUI and tried to create a simple window on my Ubuntu. I am using jre7 for now.
I wrote code exactly from tutorial because from experience there are stuff that doesn't work even if it's correctly typed onto my screen. So, now I used thenewboston's first tutorial with Java GUI. Typed all syntax correctly, classes seems fine, no errors.
He got window that was expected - mine only got blank window with no title and no text.
Screenshot with that
(source: scaleengine.net)
Code in JFrames.java file:
import java.awt.FlowLayout; // importē plūstošo skatu / default layout
import javax.swing.JFrame; // dod iespēju piekļūt pamata logu struktūrai
import javax.swing.JLabel; // ļauj rakstīt tekstu logos
public class JFrames extends JFrame {
private JLabel item1;
public JFrames() {
super("The Title Of The Program"); // parāda title bar ar tekstu
setLayout(new FlowLayout());
item1 = new JLabel("This is sentence with something");
item1.setToolTipText("This is tooltip on hover");
add(item1); // pievieno logam šo lietiņu
}
}
Please, ignore latvian comments, that's just for my reference.
So I want to know - why my window appears blank?