Java add more than one JPanel objects into JFrame

Question

I am a beginer and I dont know how to add more objects into JFrame. How could I add more than one JPanel objects into JFrame? Below is what I have tried.

Thanks for your help.

public class Init extends JFrame{

    public Init(){
        super("Ball");

        Buttons t = new Buttons();

        JumpingBall b1 = new JumpingBall();
        JumpingBall b2 = new JumpingBall();

        t.addBall(b1);
        t.addBall(b2);

        add(b1);
        add(b2);


        setSize(500,500);
        setResizable(false);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
    }

}

You should use Layouts. Read this: docs.oracle.com/javase/tutorial/uiswing/layout — Ivan
– Ivan, Commented Dec 25, 2014 at 17:32

mosemos · Accepted Answer · 2014-12-25 18:09:09Z

1

Assuming that JumpingBall extends JPanel, you might want to have a look at the java layout managers here: Link.

The default Layout for a JFrame is the BorderLayout and if you didn't specify where you want to add your component, The BorderLayout will put it in the center by default. In BorderLayout, you cannot have more that one component in the same area. So, in your example you will end up having only the second JumpingBall panel in your frame. If you want to have more than one component at the center, then you will have to create a JPanel and add those components to it using different Layout. The common three Layouts are the BorderLayout, FlowLayout and GridLayout Please have a look at the provided link above to see how the components are arranged.

answered Dec 25, 2014 at 18:09

mosemos

1113 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Nick Louloudakis · Accepted Answer · 2014-12-25 17:53:05Z

1

You can add a number of JPanel objects in a JFrame, using the add method. If only one is displayed, you might need to change your Layout options or use a Layout Manager (Look here for more).

answered Dec 25, 2014 at 17:53

Nick Louloudakis

6,0254 gold badges43 silver badges57 bronze badges

1 Comment

Nick Louloudakis Over a year ago

Ok, nice to hear. Do not forget to vote as best whatever answer you think it answers your question more completely.

JBaba · Accepted Answer · 2014-12-25 18:29:35Z

1

You are seeing only one because it overlapping each other. Just provide setbound(x,y,x1,y1) for you panel component and you will see your panel at location.

or use setLayout(new FlowLayout()); which is going to order your component in respective to other so you will not override each-other.

answered Dec 25, 2014 at 18:29

JBaba

61214 silver badges32 bronze badges

Collectives™ on Stack Overflow

Java add more than one JPanel objects into JFrame

3 Answers 3

Comments

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related