java修改列表项选择模式.doc

修改列表框选择模式package com.swing01;import java.awt.BorderLayout;import java.awt.EventQueue;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.border.EmptyBorder;import javax.swing.UIManager;import java.awt.GridLayout;import javax.swing.JScrollPane;import javax.swing.JList;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;import javax.swing.ListSelectionModel;import javax.swing.JLabel;import javax.swing.SwingConstants;import java.awt.Font;public class JListSelectModelTest extends JFrame /* * */ private static final long serialVersionUID = -1203078038045289207L; /面板 private JPanel contentPane; /列表1 private JList list1; private JList list2; private JList list3; /标签 private JLabel label1; private JLabel label2; private JLabel label3; /* * 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 JListSelectModelTest frame = new JListSelectModelTest(); frame.setVisible(true); catch (Exception e) e.printStackTrace(); ); /* * Create the frame. */ public JListSelectModelTest() addWindowListener(new WindowAdapter() Override public void windowActivated(WindowEvent e) do_this_windowActivated(e); ); /标题 setTitle(力天教育：列表框的显示模式); /退出时关闭虚拟机 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); /大小及显示位置 setBounds(100, 100, 450, 300); /面板容器 contentPane = new JPanel(); /面板容器的边框 contentPane.setBorder(new EmptyBorder(5, 5, 5, 5); /布局格式 contentPane.setLayout(new BorderLayout(0, 0); /将面板容器加入到我们的窗体中 setContentPane(contentPane); /面板创建 JPanel panel = new JPanel(); /将面板另入到容器面板中 contentPane.add(panel, BorderLayout.CENTER); /面板布局格式 panel.setLayout(new GridLayout(1, 3, 5, 5); /滚动条 JScrollPane scrollPane1 = new JScrollPane(); /为面板添加滚动条 panel.add(scrollPane1); /列表的创建 list1 = new JList(); /设置列表的标题 list1.setFont(new Font(微软雅黑, Font.PLAIN, 14); /setSelectionMode确定允许单项选择还是多项选择 /ListSelectionModel该组件显示一个具有稳定索引的值列表 /SINGLE_SELECTION一次选择一个列表索引 list1.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); /创建一个视口（如果有必要）并设置其视图 scrollPane1.setViewportView(list1); label1 = new JLabel(单项选择按钮); label1.setFont(new Font(微软雅黑, Font.PLAIN, 14); /setHorizontalAlignment设置标签内容沿 X 轴的对齐方式 /SwingConstants通常用于在屏幕上定位或定向组件的常量的集合 label1.setHorizontalAlignment(SwingConstants.CENTER); /设置其视图然后将此列标题视口添加到滚动窗格 scrollPane1.setColumnHeaderView(label1); JScrollPane scrollPane2 = new JScrollPane(); panel.add(scrollPane2); list2 = new JList(); list2.setFont(new Font(微软雅黑, Font.PLAIN, 14); /SINGLE_INTERVAL_SELECTION次选择一个连续的索引范围 list2.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION); scrollPane2.setViewportView(list2); label2 = new JLabel(连续选择列表); label2.setHorizontalAlignment(SwingConstants.CENTER); label2.setFont(new Font(微软雅黑, Font.PLAIN, 14); scrollPane2.setColumnHeaderView(label2); JScrollPane scrollPane3 = new JScrollPane(); panel.add(scrollPane3); list3 = new JList(); list3.setFont(new Font(微软雅黑, Font.PLAIN, 14); scrollPane3.setViewportView(list3); label3 = new JLabel(默认选择列表); label3.setHorizontalAlignment(SwingConstants.CENTER); label3.setFont(new Font(微软雅黑, Font.PLAIN, 14); scrollPane3.setColumnHeaderView(label3); protected void do_this_windowActivated(WindowEvent e) Str