zoukankan      html  css  js  c++  java
  • 验证码窗口

    package 大大大;
    import java.util.Random;
    import javax.swing.JOptionPane;
    import javax.swing.*;
    public class kuang {
        public static void main(String[] args) {
            JTextField name=new JTextField(5);
            JTextField x=new JTextField(5);
            JTextField key=new JTextField(5);
            JPanel myPanel=new JPanel();
            StringBuffer buffer = new StringBuffer("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");
            StringBuffer sb = new StringBuffer();
            Random r = new Random();
            JTextField yanzhengma=new JTextField(5);
            int range = buffer.length();
            for (int i = 0; i <4 ; i++) {
                sb.append(buffer.charAt(r.nextInt(range)));
            }
            myPanel.add(new JLabel("账号:"));
            myPanel.add(name);
            myPanel.add(Box.createHorizontalStrut(15));//a spacer
            myPanel.add(new JLabel("密码:"));
            myPanel.add(key);
            myPanel.add(Box.createHorizontalStrut(15));//a spacer
            
            myPanel.add(new JLabel("请输入验证码:"));
            myPanel.add(yanzhengma);
            myPanel.add(Box.createHorizontalStrut(15));//a spacer
            myPanel.add(new JLabel("验证码为:"+sb));
             JOptionPane.showConfirmDialog(null, myPanel,"Please Enter name and key ", JOptionPane.OK_CANCEL_OPTION);
    
                if (yanzhengma.getText().toString().equals(sb.toString())) {
                    JOptionPane.showMessageDialog(null, "验证码成功", "验证", JOptionPane.INFORMATION_MESSAGE);
                } else {
                    JOptionPane.showMessageDialog(null, "验证码错误", "验证", JOptionPane.INFORMATION_MESSAGE);
            }
        }
    }

     

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  • 原文地址:https://www.cnblogs.com/feng747/p/13771580.html
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