java组织JPanel和布局

Question

因此，我有以下屏幕：

这是我的代码：

setLayout(new BorderLayout());

JLabel lblTitulo = new JLabel("Sistema Generador de Examenes");     
lblTitulo.setFont(new Font("Tahoma", Font.BOLD, 18));

JPanel panel1 = new JPanel();
panel1.setBackground(Color.white);
panel1.add(lblTitulo);
add(panel1, BorderLayout.NORTH);

JButton btnCrear = new JButton("Crear Examen");
JButton btnRendir = new JButton("Rendir Examen");
JButton btnCorregir = new JButton("Corregir Examen");
JButton btnVerCorrecciones = new JButton("Ver Correcciones");

btnCrear.setBounds(15, 100, 450, 35);
btnRendir.setBounds(15, 150, 450, 35);
btnCorregir.setBounds(15, 200, 450, 35);
btnVerCorrecciones.setBounds(15, 250, 450, 35);

JPanel panel2 = new JPanel();
panel2.setBackground(Color.white);
panel2.setLayout(null);
panel2.add(btnCrear);
panel2.add(btnRendir);
panel2.add(btnCorregir);
panel2.add(btnVerCorrecciones);

add(panel2, BorderLayout.CENTER);

1-我正在使用BorderLayout。如果我想让JLabel在北方，JButtons在中间，我需要2个JPanel来分离组件（JLabel和JButtons）吗？或者有没有办法只用一个JPanel

2——我想取出我的JButtons中使用的StEnLimes，并使用一些布局，以便在屏幕中间有我的JButtons。我怎么能这么做

Answer 1

I'm using the BorderLayout. Do I need to have 2 JPanels to separate components (JLabel and JButtons) if I want to have the JLabel in the North and the JButtons in the Center? Or is there any way to use just one JPanel?

是的，你可以使用一个JPanel和一个GridBagLayout，其中有一列和一些插图，以便将按钮与标签隔开

然而，不管你如何调整JFrame的大小，嵌套的布局都会将按钮保持在中间

I want to take out the setBounds used in my JButtons and use some Layout in order to have my JButtons like that in the middle of the screen. How could I do that?

GridBagLayout将用插入的按钮隔开

有关使用GridbagLayout的两个对话框示例，请参阅本文Sudoku Solver Swing GUI