java文件读写（IO）

读取D:/file.txt文件

写入D:/fs.txt文件

import java.io.*;
public class fileio {
public static void main(String[] args){
try{
BufferedReader br = new BufferedReader(new FileReader("D:/file.txt"));
BufferedWriter wr = new BufferedWriter(new FileWriter("D:/fs.txt"));
String line = br.readLine();
while (line != null) {
System.out.println(line);
wr.write(line+"\r\n");
line = br.readLine();
}
br.close();
wr.close();
}
catch(Exception e){
System.out.println(e.getMessage());
}
}
}