package onlyfun.caterpillar;
import java.io.*;
public class FileReaderWriterDemo {
public static void main(String[] args) {
try {
FileReader fileReader =
new FileReader(args[0]);
FileWriter fileWriter =
new FileWriter(args[0] + ".txt");
int in = 0;
char[] wlnChar = {'\r', '\n'};
while((in = fileReader.read()) != -1) {
if(in == '\n') {
// 寫入"\r\n"
fileWriter.write(wlnChar);
}
else
fileWriter.write(in);
}
fileReader.close();
fileWriter.close();
}
catch(ArrayIndexOutOfBoundsException e) {
System.out.println("請指定檔案");
}
catch(IOException e) {
e.printStackTrace();
}
}
}