学步园

1.输入

读取文件:

import java.io.*;
import java.math.*;
import java.util.*;
public class Main
{
   public static void main(String args[]) throws Exception
   {
       Scanner cin=new Scanner((new FileInputStream("D:\\in.txt")));
       int a,b;
       while(cin.hasNext())
       {
           a=cin.nextInt();
           b=cin.nextInt();
           System.out.println(a+b);
       }
   }
}
如此简单方便~

输出文件

import java.io.*;
import java.math.*;
import java.util.*;
public class Main
{
    public static void main(String args[]) throws Exception
    {
        Scanner cin=new Scanner(new FileInputStream("D:\\in.txt"));
        File F=new File("D:\\out.txt");
        BufferedWriter cout=new BufferedWriter(new FileWriter(F));
        while(cin.hasNext())
        {
            int a=cin.nextInt();
            int b=cin.nextInt();
            cout.append(Integer.toString(a+b));
            cout.newLine();
        }
        cout.close();
    }
}