Java – how to add padding using container?

• Java

I tried to do some padding at the top, but how do I use the container?

JFrame frame = super.screen.getFullScreenWindow();
    //Container contentPane = frame.getContentPane();
    //JPanel contentPane = new JPanel();

    // Make sure the content pane is transparent
    if (contentPane instanceof JComponent) {
        ((JComponent)contentPane).setOpaque(false);
    } 
    else {
      // ??
    }

    contentPane.setBorder(new EmptyBorder(10,10,10) );
    //frame.getContentPane().add(contentPane,BorderLayout.CENTER);

yield

[javac] symbol  : method setBorder(javax.swing.border.EmptyBorder)
 [javac] location: class java.awt.Container 
 [javac] contentPane.setBorder(new EmptyBorder(10,10) );
 [javac]

Solution

You can override container #getinsets, but you should use swing components

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