Java_GUI_4

import java.awt.Color;
import java.awt.Container;
import java.awt.Font;
import java.awt.GraphicsEnvironment;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Vector;

import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JCheckBoxMenuItem;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JPopupMenu;
import javax.swing.JRadioButton;
import javax.swing.JRadioButtonMenuItem;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
import javax.swing.ListSelectionModel;
import javax.swing.SwingUtilities;
import javax.swing.border.Border;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;

//主类
public class Sample
{

    public static void main(String[] args)
    {
        //      实例化框架类
        SampleFrame frame = new SampleFrame();
        //      设置默认关闭方式
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        //      显示框架
        frame.setVisible(true);//推荐使用等同frame.show();
    }
}

//框架类

class SampleFrame extends JFrame
{
    private JMenuItem open;

    public SampleFrame()
    {

        setTitle("J组件标签介绍");//设置框架标题
        setSize(640, 480);//设置大小

        //      菜单系统 放在JFrame里面
        //菜单栏
        JMenuBar bar = new JMenuBar();
        setJMenuBar(bar);//将菜单栏添加到框架上
        //菜单
        JMenu file = new JMenu("File");
        file.setMnemonic('F');//设置菜单助记符 只能用此方法
        //菜单项
        open = new JMenuItem("Open...");
        open.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                MyDialog d = new MyDialog(SampleFrame.this);

                d.setVisible(true);
                String ss = d.getS();
                open.setText(ss);

            }

        });
        ImageIcon icon = new ImageIcon("D:/编程图像/OTHER/FLOWER.GIF"); //添加图标
        open.setIcon(icon);//设置菜单的图标
        JMenuItem save = new JMenuItem("Save");
        JMenuItem saveas = new JMenuItem("SaveAs");
        saveas.setEnabled(false);//变灰
        JMenuItem print = new JMenuItem("Print");
        print.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_P,
                InputEvent.CTRL_MASK));//设置快捷键       
        JMenuItem setup = new JMenuItem("Setup", 'u');//设置助记符
        JMenuItem exit = new JMenuItem("Exit");
        exit.setMnemonic('x');//设置助记符 在相同的菜单中不能有相同 在不同的可以
        exit.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent arg0)
            {
                System.exit(0);
            }
        });
        file.add(open);
        file.add(save);
        file.add(saveas);
        file.addSeparator();//分隔符,添加在菜单上
        file.add(print);
        file.add(setup);
        file.add(exit);

        JMenu edit = new JMenu("Edit");
        JMenu format = new JMenu("Format");
        JMenu second = new JMenu("Second");//二级菜单，菜单添加到菜单中就可以形成菜单
        //菜单项添加在菜单上（不管这个菜单项是几级菜单）
        //原则上菜单可以嵌套多级，但是建议不要超过3级
        JMenuItem one = new JMenuItem("One");
        JMenuItem two = new JMenuItem("two");
        format.add(second);
        second.add(one);
        second.add(two);
        //带有单选、多选效果的菜单项
        JRadioButtonMenuItem rbm1 = new JRadioButtonMenuItem("太阳");//单选
        JRadioButtonMenuItem rbm2 = new JRadioButtonMenuItem("月亮");
        JCheckBoxMenuItem cbm1 = new JCheckBoxMenuItem("QQ");//多选
        JCheckBoxMenuItem cbm2 = new JCheckBoxMenuItem("MSN");
        ButtonGroup group = new ButtonGroup();
        group.add(rbm1);
        group.add(rbm2);
        second.add(rbm1);
        second.add(rbm2);
        second.add(cbm1);
        second.add(cbm2);

        format.add(rbm1);//后者生效
        format.add(rbm2);
        format.add(cbm1);
        format.add(cbm2);

        JMenu help = new JMenu("Help");
        JMenuItem about = new JMenuItem("About");
        about.setAccelerator(KeyStroke.getKeyStroke("F1"));//快捷键
        help.add(about);

        bar.add(file);
        bar.add(edit);
        bar.add(format);
        bar.add(help);

        Container con = getContentPane();//取得内容窗格
        SamplePanel panel = new SamplePanel(SampleFrame.this);//实例化面板
        con.add(panel);//将面板类添加到内容窗格
       
       
       
        //右键菜单
        pop = new JPopupMenu();
        JMenuItem copy = new JMenuItem("Copy");
        JMenuItem cut = new JMenuItem("Cut");
        JMenuItem paste = new JMenuItem("Paste");
        pop.add(copy);
        pop.add(cut);
        pop.addSeparator();
        pop.add(paste);
        addMouseListener(new MouseAdapter()
        {
            //鼠标弹出事件
            public void mouseReleased(MouseEvent e)
            {               
                //判断是否是弹出菜单触发器(过滤左键)
                if(e.isPopupTrigger())
                {
                    pop.show(e.getComponent(), e.getX(), e.getY());
                   
                }
            }
        });       
    }
    private JPopupMenu pop;
}

//面板类

class SamplePanel extends JPanel
{
    private JLabel label;//声明全局变量

    public SamplePanel(final SampleFrame frame)//构造器,一个类中的方法和内部类是平级的
    {
        //标签
        label = new JLabel("用户名");//设置标签名字
        Font font = new Font("华文行楷", Font.BOLD + Font.ITALIC, 30);//BOLD=1
        label.setFont(font);//设置字体
        Color color = new Color(200, 12, 36);
        //前景色和后景色
        label.setForeground(color);//设置前景色
        label.setOpaque(true);//设置透明,label默认不透明,设置背景色的前置条件
        label.setBackground(Color.white);//设置背景色
        /*
         * Toolkit kit = Toolkit.getDefaultToolkit(); Image image =
         * kit.getImage("D:/编程图像/OTHER/EARTH.GIF"); Icon icon = new
         * ImageIcon(image);//图像变图标
         */
        Icon icon = new ImageIcon("D:/编程图像/OTHER/EARTH.GIF");
        //也可以写成ImageIcon = new ImageIcon(...)
        label.setIcon(icon);//因为标签只能设置为图标
        label.setHorizontalTextPosition(JLabel.CENTER);
        label.setVerticalTextPosition(JLabel.TOP);
        label.setText("密码:");//重设置标签文本
        label.setEnabled(true);//设置标签是否可用,默认可用true
        label.setVisible(true);//设置是否可见
        //除了bool值以外得到方法都使用is..否则就用get()
        System.out.println(label.getText());
        System.out.println(label.isVisible());
        add(label);

        //按钮
        JButton button = new JButton("按钮");
        Font font1 = new Font("宋体", Font.ITALIC, 32);
        button.setFont(font1);
        Color color1 = new Color(200, 12, 36);
        button.setForeground(color1);
        button.setOpaque(true);
        button.setBackground(Color.white);
        Icon icon1 = new ImageIcon("D:/编程图像/华人精品LOGO/华人作品静态类/0416.GIF");
        button.setIcon(icon1);
        button.setToolTipText("按钮提示");
        button.addActionListener(new ActionListener()//动作监听
                {
                    //new后面的这个并非接口而是实现该接口的匿名内部类
                    public void actionPerformed(ActionEvent e)
                    {
                        if (label.isVisible())
                        {
                            label.setVisible(false);
                        } else
                        {
                            label.setVisible(true);
                        }
                        JOptionPane.showMessageDialog(null, "******");
                    }
                });
        button.setHorizontalTextPosition(JButton.CENTER);
        button.setVerticalTextPosition(JButton.TOP);
        button.setText("点我:");
        button.setEnabled(true);
        button.setVisible(true);
        System.out.println(button.getText());
        System.out.println(button.isVisible());
        add(button);

        //文本框
        field = new JTextField(10);
        field.setText("要放假了!");
        field.setEditable(true);//设置是否可编辑
        field.setEnabled(true);//设置是否可用
        System.out.println(field.getText());//取的文字的值

        add(field);

        JButton ok = new JButton("加五");
        ok.addActionListener(new ActionListener()
        {

            public void actionPerformed(ActionEvent e)
            {
                String s = field.getText();
                if ("niit".equals(s))
                {
                    JOptionPane.showMessageDialog(null, "恭喜！");
                } else
                {
                    int a = Integer.parseInt(s);
                    int result = a + 5;
                    JOptionPane.showMessageDialog(null, "" + result);
                }
            }
        });
        add(ok);

        //文本域
        area = new JTextArea(5, 10);
        area.setLineWrap(true);//控制自动换行

        //滚动窗格（带有滚动条的面板）
        JScrollPane sp = new JScrollPane(area);
        //设置单词风格换行
        area.setWrapStyleWord(true);
        add(sp);

        //密码框
        jfield = new JPasswordField(10);
        jfield.setEchoChar('$');
        add(jfield);

        JButton checkPass = new JButton("检查密码");
        checkPass.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                char[] ch = jfield.getPassword();
                String s = new String(ch);
                JOptionPane.showMessageDialog(null, s);
            }

        });
        add(checkPass);

        //复选框
        cb1 = new JCheckBox("体育");
        cb2 = new JCheckBox("旅游", true);//默认选中
        cb3 = new JCheckBox("看书");
        cb4 = new JCheckBox("音乐");
        cb4.setSelected(true);//默认选中
        cb4.isSelected();
        add(cb1);
        add(cb2);
        add(cb3);
        add(cb4);

        cb1.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                if (cb1.isSelected())
                {
                    JOptionPane.showMessageDialog(null, "你选中了");
                } else
                {
                    JOptionPane.showMessageDialog(null, "你取消了选中");
                }
            }
        });
        JButton ch = new JButton("确定");
        ch.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                String s = "";
                if (cb1.isSelected())
                {
                    s = s + cb1.getText() + "  ";
                }
                if (cb2.isSelected())
                {
                    s = s + cb2.getText() + "  ";
                }
                if (cb3.isSelected())
                {
                    s = s + cb3.getText() + "  ";
                }
                if (cb4.isSelected())
                {
                    s = s + cb4.getText() + "  ";
                }
                JOptionPane.showMessageDialog(null, s);
            }

        });
        add(ch);

        //单选按钮
        JRadioButton r1 = new JRadioButton("春", true);//默认选中
        JRadioButton r2 = new JRadioButton("夏");
        JRadioButton r3 = new JRadioButton("秋");
        JRadioButton r4 = new JRadioButton("冬");
        r3.setSelected(true);//默认选中
        ButtonGroup group = new ButtonGroup();//按钮组（为按钮添加逻辑约束）
        group.add(r1);//r1到r4只能选一个
        group.add(r2);
        group.add(r3);
        group.add(r4);
        //添加一个面板，设置边框，进行（外观约束）
        JPanel p = new JPanel();
        Border border = BorderFactory.createTitledBorder("你最喜欢的季节");
        p.setBorder(border);//为面板设置边框 
        p.add(r1);
        p.add(r2);
        p.add(r3);
        p.add(r4);
        RadioAction ra = new RadioAction();
        r1.addActionListener(ra);
        r2.addActionListener(ra);
        r3.addActionListener(ra);
        r4.addActionListener(ra);
        add(p);

        //组合框
        String[] str =
        { "电视机", "电冰箱", "电话机", "电水壶", "电脑", "电火锅", "电热毯", "电磁炉", "洗衣机", "日光灯",
                "电动车" };

        //取得当前操作系统的所有字体
        String[] fonts = GraphicsEnvironment.getLocalGraphicsEnvironment()
                .getAvailableFontFamilyNames();

        combo = new JComboBox(str);
        //        combo.setSelectedIndex(2);//使用下标设置默认值
        //使用对象来设置默认值
        combo.setSelectedItem("电话机");

        combo.setMaximumRowCount(5);//设置最大可见行数

        combo.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                int idx = combo.getSelectedIndex();
                Object obj = combo.getSelectedItem();
                String s = obj.toString();
                JOptionPane.showMessageDialog(null, "你选中了" + (idx + 1)
                        + "个选项，内容是：" + s);

            }
        });

        add(combo);

        label1 = new JLabel("欢迎来到JAVA世界!!!");

        String[] fonts1 = GraphicsEnvironment.getLocalGraphicsEnvironment()
                .getAvailableFontFamilyNames();
        String[] style =
        { "常规", "加粗", "倾斜", "粗斜" };

        cfont = new JComboBox(fonts1);
        cstyle = new JComboBox(style);
        csize = new JComboBox(new String[]
        { "12", "16", "18", "22", "26", "32", "48" });

        cfont.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                String fontName = cfont.getSelectedItem().toString();
                Font oldFont = label.getFont();
                label1.setFont(new Font(fontName, oldFont.getStyle(), oldFont
                        .getSize()));
            }
        });
        cstyle.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                String fontStyle = cstyle.getSelectedItem().toString();
                Font oldFont = label1.getFont();
                Font f = null;
                if ("常规".equals(fontStyle))
                {
                    f = new Font(oldFont.getFontName(), Font.PLAIN, oldFont
                            .getSize());
                }
                if ("加粗".equals(fontStyle))
                {
                    f = new Font(oldFont.getFontName(), Font.BOLD, oldFont
                            .getSize());
                }
                if ("倾斜".equals(fontStyle))
                {
                    f = new Font(oldFont.getFontName(), Font.ITALIC, oldFont
                            .getSize());
                }
                if ("粗斜".equals(fontStyle))
                {
                    f = new Font(oldFont.getFontName(),
                            Font.BOLD + Font.ITALIC, oldFont.getSize());
                }
                label1.setFont(f);
            }
        });
        csize.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                String size = csize.getSelectedItem().toString();
                Font oldFont = label1.getFont();
                int fontSize = Integer.parseInt(size);
                label1.setFont(new Font(oldFont.getFontName(), oldFont
                        .getStyle(), fontSize));
            }
        });
        add(label1);
        add(cfont);
        add(cstyle);
        add(csize);

        //列表框
        v = new Vector();
        v.addElement("电视机");
        v.addElement("电冰箱");
        v.addElement("电话机");
        v.addElement("电水壶");
        v.addElement("电脑");
        v.addElement("电火锅");
        v.addElement("电动车");
        v.addElement("电热毯");
        v.addElement("洗衣机");
        v.addElement("日光灯");
        list = new JList(v);
        v.removeElement("电视机");//删除内容
        v.addElement("NIIT");//添加内容
        list.setVisibleRowCount(5);//设置可见行数
        list.setSelectedIndex(1);//设置默认选中
        list.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
        list.setSelectedIndices(new int[]
        { 1, 3, 4 });//设置默认选中多个

        list.addListSelectionListener(new ListSelectionListener()
        {
            //当状态改变时响应事件
            public void valueChanged(ListSelectionEvent e)
            {
                //可以不设全局变量,li和list1是指向同一内存的不同名称的对象
                JList li = (JList) e.getSource();//取得选中的对象列表,得到点击JList产生的事件
                Object[] objs = li.getSelectedValues();
                for (int i = 0; i < objs.length; i++)//遍历数组
                {
                    if (e.getValueIsAdjusting())//触发刚才发生的事件,去除丢失状态的事件
                    {
                        Object obj = objs[i];
                        String s = obj.toString();
                        System.out.println(s);
                    }
                }
            }
        });

        //list = new JList(fonts);

        JScrollPane sp1 = new JScrollPane(list);//加上滚动条
        add(sp1);

        JButton blist = new JButton("OK");
        blist.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                v.addElement("NIIT");
                //list.updateUI();//刷新列表框
                SwingUtilities.updateComponentTreeUI(frame);//刷新整个界面
            }
        });
        add(blist);

    }

    class RadioAction implements ActionListener
    {
        public void actionPerformed(ActionEvent e)//e为所有事件的封装
        {
            String s = "";
            //取得触发事件的对象（四个单选按钮之一）
            JRadioButton rb = (JRadioButton) e.getSource();
            if ("春".equals(rb.getText()))
            {
                s = "春";
            }
            if ("夏".equals(rb.getText()))
            {
                s = "夏";
            }
            if ("秋".equals(rb.getText()))
            {
                s = "秋";
            }
            if ("冬".equals(rb.getText()))
            {
                s = "冬";
            }
            area.setText(area.getText() + s + "/r/n");
            //自动追加的末尾,不会覆盖原来的内容
            //area.append(s + "/r/n");
        }
    }

    private JTextField field;

    private JPasswordField jfield;

    private JTextArea area;

    private JCheckBox cb1, cb2, cb3, cb4;

    private JComboBox combo;

    private JLabel label1;

    private JComboBox cfont, cstyle, csize;

    private Vector v;

    private JList list;

}

class MyDialog extends JDialog
{
    private JTextField field1;

    private String s;

    public MyDialog(SampleFrame frame)
    {
        super(frame, true);

        setTitle("对话框");
        setSize(200, 160);

        Container con = getContentPane();
        JPanel panel = new JPanel();
        field1 = new JTextField(10);
        JButton button = new JButton("OK");
        button.addActionListener(new ActionListener()
        {

            public void actionPerformed(ActionEvent e)
            {
                s = field1.getText();
                dispose();//销毁界面释放内存
                //setVisible(false);//隐藏界面，不释放内存
            }

        });
        con.add(panel);
        panel.add(field1);
        panel.add(button);

    }

    public String getS()
    {
        return s;
    }
}