CODEWITHSUNDEEP
javaswing
user2512123
user2512123

Reputation:

Java Swing Using Multiple packages/classes

Some time ago I wrote a code in a single main class which worked fine. Later I added JPanel and JFrame in again its single main it again worked fine.

Now I am trying to break the code down and move them into packages.

here is my main -( src/start/Main.java)-

package start;
import javax.swing.JFrame;
import frames.*;
public class Main {

   public static void main(String[] args) { 
        MainFrame.createFrame();
        LogoPanel.createLogoPanel();       //this line is the problem
    }
}

here is MainFrame -(src/frames/MainFrame.java)-

package frames;
import javax.swing.JFrame;
public class MainFrame {

    public static JFrame createFrame() {
        JFrame frame = new JFrame ("App");
        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        frame.setResizable(false);
        frame.setBounds(140,140, 1000, 580);
        frame.setVisible(true);
        frame.setLayout(null);
        return frame;
    }

}

here is LogoPanel
-(src/frames/LogoPanel.java)-

package frames;

import java.awt.Color;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class LogoPanel {

    public static JPanel createLogoPanel(JFrame frame) {
        JPanel logoPanel = new JPanel ();
        logoPanel.setVisible(true);
        logoPanel.setBounds(0, 0, 1000, 80);
        logoPanel.setBackground(Color.gray);
        logoPanel.setLayout(null);
        frame.add(logoPanel);
        return logoPanel;
    }

}

as I said LogoPanel.createLogoPanel(); is the problem . It does not accept createLogoPanel(JFrame frame) from me ? setting it to null doesn't show the panel at all . anyway I can make this work ?

Upvotes: 0

Views: 133

Answers (1)

Thihara
Thihara

Reputation: 6969

Your createLogoPanel takes a JFrame type argument.

But I don't see you passing an argument when you are actually invoking the method.

Do something along the lines of :

    JFrame frame = MainFrame.createFrame();
    LogoPanel.createLogoPanel(frame);

This error seem to suggest a lack of understanding about basic Java syntax and concepts. If you are able to accumulate knowledge in this area it will benefit you greatly in the future.

Upvotes: 1

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