java按钮控件边框留白.doc

实现按钮控件边框留白关键技术：简单的EmptyBorder边框EmptyBorder边框的最简单的应用，就是通过4个整型参数指定新建边框的四边留白public EmptyBorder(int top,int left,int botton,int right)top:顶部留白left左边留白botton底部留白right右边留白package llt.swing08;import java.awt.EventQueue;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.border.EmptyBorder;import javax.swing.JButton;import javax.swing.UIManager;import javax.swing.JLabel;import javax.swing.SwingConstants;public class ShowEmptyBorder extends JFrame private JPanel contentPane; /* * Launch the application. */ public static void main(String args) try UIManager .setLookAndFeel(com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel); catch (Throwable e) e.printStackTrace(); EventQueue.invokeLater(new Runnable() public void run() try ShowEmptyBorder frame = new ShowEmptyBorder(); frame.setVisible(true); catch (Exception e) e.printStackTrace(); ); /* * Create the frame. */ public ShowEmptyBorder() setTitle(力天教育实现按钮控件的留白); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setBounds(100, 100, 328, 336); contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5); setContentPane(contentPane); contentPane.setLayout(null); JButton button = new JButton(演示按钮); button.setBorder(new EmptyBorder(40, 0, 0, 0);/ 顶部留白：40pix button.setBounds(19, 106, 109, 64); contentPane.add(button); JButton button_1 = new JButton(演示按钮); button_1.setBorder(new EmptyBorder(0, 40, 0, 0);/ 左侧留白：40pix button_1.setBounds(177, 14, 109, 64); contentPane.add(button_1); JButton button_2 = new JButton(演示按钮); button_2.setBorder(new EmptyBorder(0, 0, 0, 40);/ 右侧留白：40pix button_2.setBounds(19, 14, 109, 64); contentPane.add(button_2); JButton button_3 = new JButton(演示按钮); button_3.setBorder(new EmptyBorder(0, 0, 40, 0);/ 底部留白：40pix button_3.setBounds(177, 106, 109, 64); contentPane.add(button_3); JButton button_4 = new JButton(演示按钮); button_4.setBorder(new EmptyBorder(0, 0, 40, 40);/ 右侧和底部留白：40pix button_4.setBounds(19, 201, 109, 64); contentPane.add(button_4); JButton button_5 = new JButton(演示按钮); button_5.setBorder(new EmptyBorder(40, 40, 0, 0);/ 左侧和顶部留白：40pix button_5.setBounds(177, 198, 109, 64); contentPane.add(button_5); JLabel lblpix = new JLabel(右则留白40pix); lblpix.setHorizontalAlignment(SwingConstants.CENTER); lblpix.setBounds(19, 76, 109, 18); contentPane.add(lblpix); JLabel lblpix_4 = new JLabel( 右则和底部留白40pix); lblpix_4.setHorizontalAlignment(SwingConstants.CENTER); lblpix_4.setBounds(6, 263, 134, 18); contentPane.add(lblpix_4); JLabel lblpix_5 = new JLabel( 左则和底部留白40pix); lblpix_5.setHorizontalAlignment(SwingConstants.CENTER); lblpix_5.setBounds(161, 263, 145, 18); contentPane.add(lblpix_5); JLabel lblpix_1 = new JLabel(左则留白40pix); lblpix_1.setHorizontalAlignment(SwingConstants.CENTER); lblpix_1.setBounds(177, 76, 109, 18); contentPane.add(lblpix_1); JLabel lblpix_2 = new JLabel(顶部留白40pix); lblpix_2.setHorizontalAlignment(SwingConstants.CENTER); lblpix_2.setBounds(19, 171, 109, 18); contentPane.add(lblpix_2); JLabel lblpix_3 = new JLabel(底部留白40pix); lblpix_3.setHorizontalAlignment(SwingConstants.CENTER); lblpix_3.setBounds(177, 171, 109, 18); contentPa