看过这样的代码吗? 大部分人绝对看不懂!

import java.util.*;
import java.io.*;
public class ExecTWR{
public static void main(String []args){
try(BufferedReader br =new BufferedReader(new FileReader(“all.txt”)); PrintWriter pw=new PrintWriter(“i.txt”);){
String str;
while((str=br.readLine())!=null){
pw.println(str);
}
}catch(Exception e){
}
}
}