哪里出了问题?
package zh.codegym.task.task18.task1808;
/*
分割文件
*/
import java.io.*;
import java.util.ArrayList;
import java.util.List;
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader=new BufferedReader(new InputStreamReader(System.in));
String file1=reader.readLine();
FileInputStream inputStream1 =new FileInputStream(file1);
String file2=reader.readLine();
FileOutputStream fileName1=new FileOutputStream(file2);
String file3=reader.readLine();
FileOutputStream fileName2=new FileOutputStream(file3);
List<Integer> list=new ArrayList<>();
int total=0;
while (inputStream1.available()>0){
int data= inputStream1.read();
list.add(data);
total++;
}
for(int i=0;i<total/2;i++){
fileName1.write(list.get(i));
}
for(int i=total/2;i<total;i++){
fileName2.write(list.get(i));
}
reader.close();
fileName1.close();
fileName2.close();
}
}