How to add buttons into a jtoolbar dynamically

Question

I have a java application which requires to add button sets contains in jpanels dynamically. ex:-

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JButton button1 = new JButton("Button_1");
JButton button2 = new JButton("Button_2");

JPanel panel = new JPanel();
panel.add(button1);
panel.add(button1);
tblMainToolBar.add(panel);

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above code adds the panel into the tool bar but, to see the added panel I have to minimize or maximize the main window. please assist.

Answer 1

When adding components to a visible GUI the code should be:

panel.add(...);
panel.revalidate();

Answer 2

You need to call yourFrame.pack() after .add() .