class1.java

我自己编的一个游戏程序

import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class Class1
{
	public static void main (String[] args)
	{
		Frame f=new Frame("菜单条");
		Student student[]=new Student[10];
		int i;
		for (i=0;i<student.length;i++)
		{ 
		  student[i]=new Student();
		  student[i].name=new String();
		  student[i].sex=new String();
		  student[i].no=new String();
		} 
		MenuBar mb=new MenuBar();//菜单条无法单独显示出来,用于管理菜单
		Menu m1=new Menu("文件");
		Menu m2=new Menu("输入");
		MenuItem mi1=new MenuItem("打开文件");
		MenuItem mi2=new MenuItem("保存数据");
		MenuItem mi3=new MenuItem("数据输入");
		m1.add(mi1);//在m1菜单上添加mi1菜单项
		m1.add(mi2);
		m2.add(mi3);
		mb.add(m1);//将菜单添加到菜单条上
		mb.add(m2);
		Handler handler=new Handler();
		handler.f=f;
		handler.stu=student;
		mi1.addActionListener(handler);
		mi2.addActionListener(handler);
		mi3.addActionListener(handler);
		f.setMenuBar(mb);//注意并没有使用f.add方法
		f.setSize(280,280);
		f.show();
	
	}
}
class Handler implements ActionListener {
	Frame f;
	Student stu[];
	public void actionPerformed(ActionEvent e){
	  if (e.getActionCommand()=="打开文件")
	  {
	    FileDialog fd=new FileDialog(f,"Dialog");
	    fd.setVisible(true);
		System.out.println(stu[0].name+" " +stu[0].sex);
	  }
	  else if (e.getActionCommand()=="保存数据")
	  {
		  
	    FileDialog fd=new FileDialog(f,"Dialog");
	    fd.setVisible(true);
		try
		{
		 FileOutputStream out =new FileOutputStream(fd.getFile()) ;
		 OutputStreamWriter out1=new OutputStreamWriter(out);
		 int i;
		 for (i=0;i<stu.length-1;i++)
		 {
		   out1.write(stu[i].name,0,stu[i].name.length());
		   out1.write(stu[i].sex,0,stu[i].sex.length());
		   out1.write(stu[i].no,0,stu[i].no.length());
		   out1.write('\r');
		   out1.write('\n');
		   System.out.println(stu[i].name+stu[i].sex+stu[i].no);
		   
		 }
		 out1.close();
		 out.close();
		}
		catch(IOException ioe)
		{
			System.out.println(ioe);
		}			
	  }
	  else if (e.getActionCommand()=="数据输入")
	  {
		  Dialog d=new Dialog(f,"数据输入",true);
		  TextField tf1,tf2,tf3;
		  Button b1,b2,b3,b4;
		  d.setLayout(new GridLayout(5,2));
		  d.add(new Label("姓名"));
		  d.add(tf1=new TextField(8));
		  d.add(new Label("性别"));
		  d.add(tf2=new TextField("男",1));
		  d.add(new Label("学号"));
		  d.add(tf3=new TextField(8));
		  d.add(b1=new Button("前一条"));
		  d.add(b2=new Button("后一条"));
		  d.add(b3=new Button("确定"));
		  d.add(b4=new Button("取消"));
		  Handler1 handler1=new Handler1();
		  b1.addActionListener(handler1);
		  b2.addActionListener(handler1);
		  b3.addActionListener(handler1);
		  b4.addActionListener(handler1);
		  handler1.d=d;
		  handler1.stu=stu;
		  handler1.num=0;
		  handler1.max=0;
		  handler1.tf1=tf1;
		  handler1.tf2=tf2;
		  handler1.tf3=tf3;
		  d.pack();
		  d.setVisible(true);
	  }
	}
}
class Handler1 implements ActionListener {
	Dialog d;
    TextField tf1,tf2,tf3;
	Student stu[];
	static int num,max;
	public void actionPerformed(ActionEvent e){
		if (e.getActionCommand()=="后一条" && num < stu.length-1 )
		{
			stu[num].name=tf1.getText();
			stu[num].sex=tf2.getText();
			stu[num].no=tf3.getText();
			if (num >=max)
			{
			 tf1.setText("");
			 tf2.setText("男");
		     tf3.setText("");
			 num+=1;
			 max+=1;
			} 
			else
			{
			 num+=1;
			 tf1.setText(stu[num].name);
			 tf2.setText(stu[num].sex);
		     tf3.setText(stu[num].no);
			}
		}
	  else if (e.getActionCommand()=="确定")
		{
			stu[num].name=tf1.getText();
			stu[num].sex=tf2.getText();
			stu[num].no=tf3.getText();
			d.setVisible(false);
		}
	}
}
class Student{
	String name;
	String sex;
	String no;
}