exercise16_3.java

一款用java编写的小型数据库管理系统

import java.io.*;
public class Exercise16_3 {
  public static void main(String[]args)throws IOException{
	  int sun=0;
	  FileOutputStream output=new FileOutputStream("temp.dat");
	   for(int i=1;i<=100;i++){
		   sun+=i;
		   output.write(i);
	   }
		   output.close();
	 FileInputStream input=new FileInputStream("temp.dat");
	 int value;
	 while((value=input.read())!=-1)
		 System.out.print(value+" ");
		 System.out.println();
	     System.out.println("总和为:"+sun);
	     input.close();
	   }
  }