import java.io.*; public class Dome09 { public static void main(String[] args) { BufferedReader br = null; BufferedWriter bw = null; try { //System.in是字节流,通过转换流 InputStreamReader 转换成字符流,在通过字符缓冲流进行行读取 br = new BufferedReader(new InputStreamReader(System.in)); //System.on是字节流,通过转换流 InputStreamReader 转换成字符流,在通过字符缓冲流进行行读取 bw = new BufferedWriter(new OutputStreamWriter(System.out)); while (true){ String ipt = br.readLine();//读取一行 bw.write(ipt);//写入一行 bw.newLine();//换行 if (ipt.equals("exit")){//直到用户输入exit 退出 break; } bw.flush();//刷新 } } catch (Exception e) { e.printStackTrace(); } finally { try { if (br != null) { br.close(); } } catch (Exception e) { e.printStackTrace(); } } } }