10.25 周总结

又进过了一周充实的学习
通过课上的练习和课下的编程以及查询资料
又是收获满满
今天分享一个验证码的程序
 1 package 验证码;
 2 
 3 import java.awt.Container;
 4 import java.awt.FlowLayout;
 5 import java.awt.event.ActionEvent;
 6 import java.awt.event.ActionListener;
 7 import java.util.Random;
 8 
 9 import javax.swing.JButton;
10 import javax.swing.JFrame;
11 import javax.swing.JLabel;
12 import javax.swing.JOptionPane;
13 import javax.swing.JPanel;
14 import javax.swing.JPasswordField;
15 import javax.swing.JTextField;
16 
17 @SuppressWarnings("unused")
18 public class Ma {
19     public static void main(String[] args) {
20         JFrame jf=new JFrame();
21         JButton jb=new JButton("登录");
22         JLabel idname=new JLabel("用户名"); //实例化JLabel对象
23         JLabel pastword=new JLabel("密    码");
24         JLabel yzword=new JLabel("验证码");
25         int[] random=new int[6];
26         Random r=new Random();
27         for(int i=0;i<6;i++)
28         {
29             random[i]=r.nextInt(10)+1;
30         }
31         String str="";
32         for(int i=0;i<6;i++)
33         {
34             str=str+random[i];
35         }
36         final String Str=str;
37         JLabel yzWord=new JLabel(str);
38         JTextField idtxt=new JTextField(15);//实例化用户名文本框
39         JPasswordField wordtxt=new JPasswordField(15);//实例化密码框
40         JTextField yzwordtxt=new JTextField(15);
41         wordtxt.setEchoChar('*');//将输入密码框中的密码以*显示出来
42         jf.setBounds(450,350,350,250);
43         jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
44         Container c=jf.getContentPane();
45         c.setLayout(null);
46         c.add(jb);
47         c.add(idname);
48         c.add(idtxt);
49         c.add(pastword);
50         c.add(wordtxt);
51         c.add(yzword);
52         c.add(yzwordtxt);
53         c.add(yzWord);
54         idname.setBounds(10,40,50,18);
55         pastword.setBounds(10,80,50,18);
56         yzword.setBounds(10,120,50,18);
57         yzWord.setBounds(60,160,80,18);
58         idtxt.setBounds(60,40,200,18);
59         wordtxt.setBounds(60,80,200,18);
60         yzwordtxt.setBounds(60,120,200,18);
61         jb.setBounds(200,150,60,40);
62         jb.addActionListener(new ActionListener() {
63             public void actionPerformed(ActionEvent arg0)
64             {
65                 if(idtxt.getText().trim().equals("20193941")
66                         &&new String(wordtxt.getPassword()).equals("010011")
67                         &&yzwordtxt.getText().trim().equals(Str))
68                 {
69                     JOptionPane.showMessageDialog(null,"登录成功");
70                 }
71                 if(yzwordtxt.getText().trim().equals(Str)
72                         &&(!idtxt.getText().trim().equals("20193941")
73                         ||!(new String(wordtxt.getPassword()).equals("010011"))))
74                 {
75                     JOptionPane.showMessageDialog(null,"用户名或密码错误");
76                 }
77                 if(idtxt.getText().trim().equals("123456")
78                         &&new String(wordtxt.getPassword()).equals("654321")
79                         &&!yzwordtxt.getText().trim().equals(Str))
80                 {
81                     JOptionPane.showMessageDialog(null,"验证码错误");
82                 }
83             }
84         });
85         jf.setVisible(true);
86     }
87 }