import java.io.*; public class FileCopyDemo{ public static void main(String[] args)throws IOException{ BufferedReader br = new BufferedReader(new FileReader("D:\1.txt")); BufferedWriter bw = new BufferedWriter(new FileWriter("D:\copy.txt")); String line = ""; while((line=br.readLine())!=null){ bw.write(line); bw.newLine(); bw.flush(); } bw.close(); br.close(); } }