JFrame显示一个面板但没有显示另一个面板

Question

Hey guys I am creating a JFrame and I have created 2 panels. The first one is in the center with 3 buttons in a row and the second one is in the south with 3 buttons in a row. The frame is only showing the last panel made. It is like it creates the first panel and then overwrites it with the second panel. Here is my code:

private JPanel getSouthPanel()
{
  JPanel panel1 = new JPanel(new BorderLayout());
  panel1.add(button1, BorderLayout.WEST);
  panel1.add(button2, BorderLayout.CENTER);
  panel1.add(button3, BorderLayout.EAST);
  return panel1;
}

private JPanel getCenterPanel()
{
  JPanel panel = new JPanel(new BorderLayout());
  panel.add(button1, BorderLayout.WEST);
  panel.add(button2, BorderLayout.CENTER);
  panel.add(button3, BorderLayout.EAST);
  return panel;
}

public void layoutComponents()
{
  Container container = frame.getContentPane();
  container.setLayout(new BorderLayout());
  container.add(getCenterPanel(), BorderLayout.NORTH);
  container.add(getSouthPanel(), BorderLayout.SOUTH);
  frame.setSize(300, 300);
  frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
}

Answer 1

问题是您不能将相同的按钮放在两个不同的面板中，您需要为每个面板创建单独的按钮。