java继承系列之添加一个LinkLable类

  1 import java.awt.*;
  2 import javax.swing.*;
  3 import javax.swing.JFrame;
  4 import java.awt.event.WindowListener;
  5 import java.awt.event.WindowEvent;
  6 import java.awt.event.WindowAdapter;
  7 import java.awt.event.ActionListener;
  8 import java.awt.event.ActionEvent;
  9 import java.awt.event.MouseListener;
 10 import java.awt.event.MouseAdapter;
 11 import java.awt.event.MouseEvent;
 12 import java.awt.Desktop;
 13 import java.awt.Cursor;
 14 
 15 public class LinkLabel extends JLabel implements MouseListener
 16 {
 17     protected String text;
 18     protected boolean isSupported;
 19     protected JFrame parent = null;
 20     public LinkLabel(String text, JFrame parent)   //方法
 21     {
 22         this.text = text;   //局部变量传递值给成员变量
 23         this.parent = parent;  
 24         try 
 25         {
 26             this.isSupported = Desktop.isDesktopSupported() && Desktop.getDesktop().isSupported(Desktop.Action.BROWSE);
 27         } catch (Exception e) 
 28         {
 29             this.isSupported = false;
 30         }
 31         setText(false);
 32         addMouseListener(this);
 33     }
 34     private void setText(boolean b) //设置LinkLable的文本颜色
 35     {
 36         if (b)
 37             setText("<html><font color=red><u>" + text);
 38         else
 39             setText("<html><font color=blue><u>" + text);
 40     }
 41     public void mouseEntered(MouseEvent e) 
 42     {
 43         setText(isSupported);
 44         if (isSupported)
 45             setCursor(new Cursor(Cursor.HAND_CURSOR));  //光标变成手型
 46     }
 47     public void mouseExited(MouseEvent e) 
 48     {
 49         setText(false);
 50     }
 51     public void mouseReleased(MouseEvent e)
 52     {
 53         
 54     }
 55     public void mousePressed(MouseEvent e)
 56     {
 57         
 58     }
 59     public void mouseClicked(MouseEvent e) 
 60     {
 61     }
 62 }
 63 
 64 class FixFrame extends JFrame
 65 {
 66     this.setResizable(false);
 67     this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 68 }
 69 class ResizableFrame extends JFrame
 70 {
 71     this.setResizable(true);
 72     this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 73 }
 74 class LoginFrame extends FixFrame
 75 {
 76     LoginFrame()  //构造函数
 77     {
 78         display();//调用display()函数
 79     }
 80     private JButton btn1;
 81     private JButton btn2;
 82     private JTextField jtf1;
 83     private JPasswordField jpf1; //密码文本
 84     private ImageIcon img1;
 85     private JLabel background1;
 86     private ImageIcon img2;
 87     private JLabel background2;
 88     private JLabel lab1;
 89     private Font fnt;
 90     private JLabel lab2;
 91     private Image im1;
 92     private ImageIcon im2;
 93     private MyListener ltn;
 94     private BtnAction act;
 95     private BtnAction2 act2;
 96     class MyListener extends WindowAdapter //适配器   是扩展  不需要覆盖WindowAdapter中的所有方法 功能代码较多
 97     {
 98         public void windowClosing(WindowEvent e)
 99         {
100             System.out.println("windowClosing");
101             int res = JOptionPane.showConfirmDialog(null,"是否退出程序应用","提示", JOptionPane.YES_NO_OPTION); //弹出消息框
102             System.out.println("res =" + res);
103             if(res == 0)
104             {
105                 System.out.println("退出");
106                 System.exit(1);// 退出
107                 System.out.println("退出1"); //不输出  因为exit先执行
108             }
109             else if(res == 1)
110             {
111                 System.out.println("不退出");
112                 setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
113                 //System.exit(1);// 退出
114                 // 不退出
115             }
116         }
117     }
118     class BtnAction implements ActionListener  //btn事件
119     {
120         public void actionPerformed(ActionEvent e)
121         {
122             System.out.println("actionPerformed");
123             if(jtf1.getText().equals("jk") && jpf1.getText().equals("jk"))
124             {
125                 System.out.println("OK");
126                 dispose();
127                 (new JFrame("主窗口")).setVisible(true);
128             }
129             else
130             {
131                 System.out.println("Error");
132                 JOptionPane.showConfirmDialog(null,"密码错误","提示", JOptionPane.DEFAULT_OPTION);
133             }
134         }
135     }
136     class BtnAction2 implements ActionListener   //内部类
137     {
138         public void actionPerformed(ActionEvent e)
139         {
140             Object o = e.getSource();
141             JButton b = (JButton)o;  //强制类型转换
142             System.out.println("芝麻开门" + btn2.getText());  //类的成员/函数，可以在内部类中使用
143             
144             if(b == btn2) //b.getSource == "重置"
145             {
146                 jtf1.setText("");
147                 jpf1.setText("");
148             }
149         }
150     }
151     public void display()
152     {
153         //JFrame frm = new JFrame(); //窗体
154         img1 = new ImageIcon("timg.gif"); //背景
155         background1 = new JLabel(img1);
156         this.getLayeredPane().add(background1, new Integer(Integer.MIN_VALUE)); 
157         //background.setBounds(0, 0, img.getIconWidth(), img.getIconHeight());
158         background1.setBounds(0, 0, 425, 450);
159         img2 = new ImageIcon("33.gif"); 
160         background2 = new JLabel(img2);
161         this.getLayeredPane().add(background2, new Integer(Integer.MIN_VALUE)); 
162         background2.setBounds(0, 0, img2.getIconWidth(), img2.getIconHeight());
163         
164         jtf1 = new JTextField(30); //文本
165         //jtf1.setColumns(10);
166         jtf1.setSize(200,35);
167         jtf1.setLocation(130,130);
168         jpf1 = new JPasswordField(30); //密码文本
169         //jpf1.setEchoChar('#');     设置密码文本内容
170         jpf1.setSize(200,35);
171         jpf1.setLocation(130,180);
172         
173         lab1 = new JLabel("账号："); //标题
174         fnt = new Font("Serief",Font.ITALIC+Font.BOLD,15);
175         lab1.setFont(fnt);
176         lab1.setBackground(Color.BLUE); //label的背景颜色
177         lab1.setOpaque(true); //label是否透明
178         lab1.setForeground(Color.YELLOW); //label前景色
179         lab2 = new JLabel("密码：");
180         lab1.setSize(50,30);
181         lab2.setSize(50,30);
182         lab1.setLocation(70,130);
183         lab2.setLocation(70,180);
184         btn1 = new JButton("登录");
185         btn1.setBounds(100,230,180,50);
186         im1 = (new ImageIcon("QQ.png")).getImage(); //图标
187         this.setIconImage(im1);
188         //ImageIcon im2 = new ImageIcon("77.png"); //图标
189         im2 = new ImageIcon("./77.png");
190         btn1.setIcon(im2);
191         this.setLayout(null);  //布局--绝对布局
192         ltn = new MyListener();  //监听
193         this.addWindowListener(ltn);
194         act = new BtnAction();    //btn事件
195         btn1.addActionListener(act);
196         btn2 = new JButton("重置");
197         btn2.setBounds(300,230,100,50);
198         act2 = new BtnAction2();
199         btn2.addActionListener(act2);
200         //frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
201         this.setSize(425,325);
202         this.setLocation(700,500);
203         this.setTitle("QQ登录");
204         this.setResizable(false);        
205         this.add(btn1);
206         this.add(btn2);
207         this.add(lab1);
208         this.add(lab2);
209         this.add(jpf1);
210         this.add(jtf1);
211         this.add(background1);
212         this.add(background2);
213         this.setVisible(true);
214         System.out.println("OK");
215     }
216     public static void main(String[] args)
217     {
218         LoginFrame Event1 = new LoginFrame();
219         System.out.println("OK");
220     }
221 }
222 class RegsterFrame extends FixFrame
223 {
224     
225 }
226 class BackPswFrame extends FixFrame
227 {
228     
229 }
230 class MainFrame extends ResizableFrame
231 {
232     
233 }
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原文地址：https://www.cnblogs.com/YUJIE666/p/6759059.html