GUI：如何正确设置布局

GUI：如何正确设置布局

GridBagLayout

如
该答案中所建议的那样，可以为左部分提供所需的全部控制。如果您愿意为简单起见而牺牲一些控制权，则可以

FlowLayout

在a里面放两个面板

GridLayout

：

import java.awt.BorderLayout;import java.awt.GridLayout;import javax.swing.JButton;import javax.swing.JCheckBox;import javax.swing.Jframe;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JTextField;class Grid extends Jframe{    private JTextField t1, t2;    private JCheckBox c1, c2;    private JButton b1, b2, b3;    private JPanel topPanel, bottomPanel;    private JPanel eastPanel, centerPanel;    private JLabel l1, l2;    public Grid()    {         c1 = new JCheckBox("Snap to Grid");         l1 = new JLabel("X:");         t1 = new JTextField("8",3);         topPanel = new JPanel();//uses flow layout by default         topPanel.add(c1); topPanel.add(l1); topPanel.add(t1);         c2 = new JCheckBox("Show Grid");         l2 = new JLabel("Y:");         t2 = new JTextField("8",3);         bottomPanel = new JPanel();         bottomPanel.add(c2);  bottomPanel.add(l2); bottomPanel.add(t2);         centerPanel = new JPanel(new GridLayout(2,1));         centerPanel.add(topPanel);         centerPanel.add(bottomPanel);         add(centerPanel,BorderLayout.CENTER);         b1 = new JButton("Ok");         b2 = new JButton("Cancel");         b3 = new JButton("Help");         eastPanel = new JPanel(new GridLayout(3,1));         eastPanel.add(b1);         eastPanel.add(b2);         eastPanel.add(b3);         add(eastPanel, BorderLayout.EAST);    }    public static void main(String[] args) {        Grid app = new Grid();        app.setDefaultCloseOperation(Jframe.EXIT_ON_CLOSE);        app.setSize(300,150);        app.setVisible(true);    }}

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