j03120e3cstudentcard.java

实现校园卡的注册

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class j03120e3cStudentCard extends Applet implements ActionListener
{
     int cardNumber=1103101120;
	 private static int password=123456;
	 static double balance=0.0;
	 Label prompt1;
	 TextField input1;
	 Label prompt2;
     TextField input2;
     Button btn;
     Maininterface frame9=new Maininterface();//定义功能窗口

    public void init()
          {
     		 setLayout(new FlowLayout());//安排布局
     		 prompt1=new Label("请输入卡号:");
     		 input1=new TextField(10);
     		 prompt2=new Label("输入密码");
     		 input2=new TextField(6);
     		 btn=new Button("确定");
     	     input2.setEchoChar('*');
     	     add(prompt1);
     		 add(input1);
     		 add(prompt2);
     	     add(input2);
     	     add(btn);
     	     btn.addActionListener(this);
     	     setSize(200,220);
	 }
	 public void paint(Graphics g)
	 {
		 g.drawImage(getImage(getDocumentBase(),"1.jpg"),0,0,this);
	 }

	 static void setpwd(int data)
	 	 	{
	 	 	    password=data;
	 	}
 boolean performConnection(int cn,int pw)//连接验证
	 	{

		  		if(cn==cardNumber&&pw==password)
		  			return true;
		  		else
		  		    return false;
		}
 public void actionPerformed(ActionEvent e)
	    {
	  //  if(e.getSource()==btn)//
	  try
			  {
				if(performConnection(Integer.parseInt(input1.getText()),
					 Integer.parseInt(input2.getText())))
					      {
								frame9.show();//显示功能窗口
                           }
                           }catch(Exception e6)//出错处理
        //else
			{ JOptionPane.showMessageDialog(btn,"请输入正确的卡号或密码","Reminder",0);//显示提示框
			 input1.setText("");
			 input2.setText("");
             }

       }
}
class Maininterface extends Frame implements ActionListener
{
    Button btn1;
    Button btn2;
    Button btn3;
    Button btn4;
    Button btn5;
   // Button btn6;
    Button btn7;
   // Button btn8;
    Button btn9;
    boolean connected;
    Inquire frame1=new Inquire();//定义查询窗口
        Changepassword frame2=new Changepassword();//定义修改密码窗口
        Consume frame3=new Consume();//定义消费窗口
    Sufficient frame4=new Sufficient();//定义充值窗口
     CET frame5=new CET();//
   // book frame6=new book();//
    message frame7=new message();//
   // see frame8=new see();//
//    exit frame9=new exit();//
    Maininterface()
    	{
        setLayout(new FlowLayout());
    	btn1=new Button("查询余额");
    	btn2=new Button("修改密码");
    	btn3=new Button("消费");
    	btn4=new Button("充值");

	btn5=new Button("等级考试");
	//btn6=new Button("图书借阅");
	btn7=new Button("个人信息");
	//btn8=new Button("");
	btn9=new Button("退出");

    add(btn1);
    add(btn2);
    add(btn3);
    add(btn4);
	add(btn5);
	//add(btn6);
	add(btn7);
	//add(btn8);
	add(btn9);
	    btn1.addActionListener(this);
		btn2.addActionListener(this);
		btn3.addActionListener(this);
		btn4.addActionListener(this);
		btn5.addActionListener(this);
		//btn6.addActionListener(this);
		btn7.addActionListener(this);
		//btn8.addActionListener(this);
		btn9.addActionListener(this);

		setSize(300,300);
	}
 public void actionPerformed(ActionEvent e)
	{
         if(e.getSource()==btn1)
					frame1.show();//显示查询余额窗口
		 if(e.getSource()==btn2)
		 			frame2.show();//显示修改密码窗口
		 if(e.getSource()==btn3)
		 			frame3.show();//显示消费窗口
		if(e.getSource()==btn4)
				    frame4.show();//显示充值窗口
		if(e.getSource()==btn5)
				    frame5.show();//
	//	if(e.getSource()==btn6)
		//		    frame6.show();//
		if(e.getSource()==btn7)
				    frame7.show();//
		//if(e.getSource()==btn8)
		//		    frame8.show();//
		if(e.getSource()==btn9)
					dispose();//退出
	}
}
class Inquire extends Frame implements ActionListener
	{
			public void paint(Graphics g)
			{
				g.drawString("您的余额为："+j03120e3cStudentCard.balance,60,100);
	         }
		   Button btn=new Button("关闭");
		Inquire()//初始化
		{
			setLayout(new FlowLayout());
			btn.addActionListener(this);
			add(btn);
			setSize(220,200);
		}
	            public void actionPerformed(ActionEvent e)
				{
					dispose();
	            }

	}
class Changepassword extends Frame implements ActionListener
	{
			  Label prompt1;
			  TextField input1;
			  Label prompt2;
			  TextField input2;
			  Button btn1;
	          Button btn2;
			Changepassword()
			  {
			    setLayout(new FlowLayout());
	            prompt1=new Label("请输入新密码：  ");
				input1=new TextField(10);
				input1.setEchoChar('*');
				setLayout(new FlowLayout());
				prompt2=new Label("再次输入密码：");
		        input2=new TextField(10);
		        input2.setEchoChar('*');
		        setLayout(new FlowLayout());
		        btn1=new Button("确定");
		        btn2=new Button("关闭");
		        add(prompt1);
		        add(input1);
		        add(prompt2);
		        add(input2);
		        add(btn1);
		        add(btn2);
		        btn1.addActionListener(this);
		        btn2.addActionListener(this);
		        setSize(300,300);
			   }
public void actionPerformed(ActionEvent e)
				{
                    if(e.getSource()==btn1)
                        {
							if(Integer.parseInt(input1.getText())==Integer.parseInt(input2.getText()))
                                {
									j03120e3cStudentCard.setpwd(Integer.parseInt(input1.getText()));
                                    JOptionPane.showMessageDialog(btn1,"修改密码成功","show message",1);
                                    dispose();
                                    input1.setText("");
		 			                input2.setText("");
								}
								else
								    JOptionPane.showMessageDialog(btn1,"请输入两个相同的数","Reminder",0);
				        }
					if(e.getSource()==btn2)
                                {
						        input1.setText("");
		 			            input2.setText("");
								dispose();
							    }
		   }
	}
	class Consume extends Frame implements ActionListener
		{
	            			    Label prompt;
	            			    TextField input;
                                 Button btn;
                                 int c;

                                Consume()

							    {
									      super("消费窗口");
									        setLayout(new FlowLayout());
									     	prompt=new Label("请输入你消费金额:");
									     	input=new TextField(10);

									     	btn=new Button("确定");
									     	add(prompt);
									     	add(input);

									      add(btn);
                                          btn.addActionListener(this);
                                            setSize(220,200);
								}
                         public void actionPerformed(ActionEvent e)
                              {
                                              // int c;
                                               try{
                                               c=Integer.parseInt(input.getText());
												if (c>0)
												{
													 JOptionPane.showMessageDialog(null,"你消费了"+input.getText(),"show message",1);
											     }
												else

													 JOptionPane.showMessageDialog(null,"小样，你是来砸场子的吧。","show message",2);


							                   }catch(Exception e9){JOptionPane.showMessageDialog(null,"输入含有非法字符!","",2);}
										   }
       }




		//class book extends Frame implements ActionListener{
		//	public void actionPerformed(ActionEvent e){
		//	}
		//}
		//class see extends Frame implements ActionListener{
		//	public void actionPerformed(ActionEvent e){
		//	}
		//}
		class message extends Frame implements ActionListener{
			                    Label prompt;
	            			    //TextField output;
	            			    Button btn;
	            		message(){
							setLayout(new FlowLayout());
							prompt=new Label("个人信息：马守文 男 21 计算机系 031班");
						    //output=new TextField(20);
						    btn=new Button("关闭");
							add(prompt);
						    //add(output);
							add(btn);
							//output.addActionListener(this);
							btn.addActionListener(this);
							setSize(520,200);
						}
			public void actionPerformed(ActionEvent e){
				if(e.getSource()==btn){
					dispose();
			    }
		     }
		}
 class exit extends Frame implements ActionListener{
			public void actionPerformed(ActionEvent e){
			}
		}
 class Sufficient extends Frame implements ActionListener
    {
		Label prompt;
		TextField input;
		Button btn1;
		Button btn2;

		Sufficient()//初始化
		{
			setLayout(new FlowLayout());
			prompt=new Label("请输入欲充值数额：");
			input=new TextField(6);
			btn1=new Button("确定");
			btn2=new Button("关闭");
			add(prompt);
			add(input);
			add(btn1);
			add(btn2);
			btn1.addActionListener(this);
			btn2.addActionListener(this);
			setSize(220,200);
	   }

			public void actionPerformed(ActionEvent e)
			{
                  if(e.getSource()==btn1)
				         {
				          j03120e3cStudentCard.balance+=Integer.parseInt(input.getText());
				 	 JOptionPane.showMessageDialog(null,"您成功充值了"+Integer.parseInt(input.getText())+"元。","show message",1);//
				         input.setText("");
				         }
				  if(e.getSource()==btn2)
				  {
					  dispose();
				   }
			}
}
 class CET extends Frame implements ActionListener{

		                         Label prompt;
			            	     Button btna;
                                 Button btnb ;
              CET()
              {
				 super("等级考试");
				 setLayout(new FlowLayout());
				 btna=new Button("英语四级");
				 btnb=new Button("英语六级");
				 add(btna);
				 add(btnb);
				 btna.addActionListener(this);
				 btnb.addActionListener(this);
				 setSize(220,200);
				  }
			public void actionPerformed(ActionEvent e){
				 if(e.getSource()==btna){
									 JOptionPane.showMessageDialog(null,"报名成功","show message",1);}
						 if(e.getSource()==btnb){
		 			 JOptionPane.showMessageDialog(null,"报名成功","show message",1);}
			}
		}