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

public class Cai_Shu_Zi extends Frame  implements ActionListener
  { MenuBar menubar;
    Menu menu1;
    Menu menu2;
    MenuItem item1;
    MenuItem item2;
    int number;
    Label 提示條;
    TextField 輸入框;
    Button buttonGetNumber,buttonEnter;   
    Cai_Shu_Zi(String s) 
    { super(s);
      menubar=new MenuBar();
      menu1=new Menu("文件");
      menu2=new Menu("幫助");
      item1=new MenuItem("退出游戲");
      item2=new MenuItem("如何游戲");
      menubar.add(menu1);
      menubar.add(menu2);
      menu1.add(item1);
      menu2.add(item2);
      setMenuBar(menubar);
      item1.addActionListener(this);
      item2.addActionListener(this);
      setLayout(new FlowLayout());
      buttonGetNumber=new Button("得到一個(gè)隨機(jī)數(shù)");
      add(buttonGetNumber);
      提示條=new Label("輸入你的猜測(cè)：",Label.CENTER);
      提示條.setBackground(Color.cyan);
      輸入框=new TextField("0",10); 
      add(提示條);
      add(輸入框);
      buttonEnter=new Button("確定"); 
      add(buttonEnter); 
      buttonEnter.addActionListener(this);
      buttonGetNumber.addActionListener(this);
      setBounds(470,400,200,200);
      
      setVisible(false);
      validate();
      addWindowListener(new WindowAdapter()
                   { public void windowClosing(WindowEvent e)
                     {  setVisible(false);
                     } 
                   });
    }
    public void actionPerformed(ActionEvent e) 
    { if (e.getSource()==item1)
        { setVisible(false);
    	}
      else if (e.getSource()==item2)
        { JOptionPane.showMessageDialog(this, "1 只可以選擇1到100之間的整數(shù)\n2 輸入的數(shù)必須是整數(shù) ");
    	}
      else if(e.getSource()==buttonGetNumber)
        { number=(int)(Math.random()*100)+1;
          提示條.setText("輸入你的猜測(cè)：");
        }
      else if(e.getSource()==buttonEnter)
        {  int guess=0;
           try { guess=Integer.parseInt(輸入框.getText());
                 if(guess==number)
                   { 提示條.setText("猜對(duì)了！");
                   }
                 else if(guess>100)
                   { 提示條.setText("必須小于100");
                     輸入框.setText(null); 
                   }
                 else if(guess>number)
                   { 提示條.setText("猜大了！");
                     輸入框.setText(null); 
                   }
                 else if(guess<number)
                   { 提示條.setText("猜小了！");
                     輸入框.setText(null); 
                   }
               }
           catch(NumberFormatException event)
               {  提示條.setText("請(qǐng)輸入數(shù)字字符");
               } 
        }
    } 
}