CODEWITHSUNDEEP
javaswinglayoutjframejpanel
SMUsamaShah
SMUsamaShah

Reputation: 7890

How to add a custom jPanel to jFrame multiple times?

I have made JPanel class with one JComboBox and two JTextField controls.

JFrame f = new JFrame();
JPanel p = new JPanel();
ComparisonPanel cp = new ComparisonPanel(); //jPanel with a few elements
ComparisonPanel cp2 = new ComparisonPanel();

p.setLayout(new FlowLayout()/*new GridLayout(2, 2)*/);

f.getContentPane().add(cp);
f.getContentPane().add(cp2/*cp*/);
f.setVisible(true);

It shows the ComparisonPanel only once. I am actually trying to generate a GUI on runtime, the panel will be repeated with a few modifications (different labels etc) and then get the values from this dynamically generated GUI.

Upvotes: 2

Views: 1388

Answers (1)

Hovercraft Full Of Eels
Hovercraft Full Of Eels

Reputation: 285430

You are setting p's layout but not the layout of the container you're trying to add your JPanel to, the contentPane, a container that uses BorderLayout by default. BorderLayout-using containers will only all the last component added (in a default way) to be shown, and that is messing you up.

Suggestion: add your ComparsonPanel objects to the p JPanel, then add that single component to the contentPane. i.e.,

JFrame f = new JFrame();
JPanel p = new JPanel();
ComparisonPanel cp = new ComparisonPanel(); //jPanel with a few elements
ComparisonPanel cp2 = new ComparisonPanel();

p.setLayout(new FlowLayout()/*new GridLayout(2, 2)*/);

p.add(cp);
p. add(cp2);
f.getContentPane().add(p);
f.pack();
f.setVisible(true);

Better yet, read the layout manager tutorials.

Upvotes: 5

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