JAVA重定向输入输出

没什么好说的，直接贴代码了。

 1 import java.io.*;

 2 import java.util.*;

 3 

 4 public class Main {

 5     public static void main(String[] args) throws IOException {

 6         System.setIn(new BufferedInputStream(new FileInputStream("ride.in")));

 7         System.setOut(new PrintStream(new FileOutputStream("ride.out")));

 8         

 9         Scanner cin = new Scanner(System.in);

10         while(cin.hasNext()){

11             // do staff...

12         }

13     }

14 }