io小例子

键盘输入，文件输出

public void OutFile() {
   
  try {
      File f = new File("D:\\jsyfile.txt");  
      FileWriter fw = new FileWriter(f);
      BufferedWriter bw = new BufferedWriter(fw);
      InputStreamReader is = new InputStreamReader(System.in); //将字节流转为字符流
      BufferedReader in = new BufferedReader(is);
      bw.write(in.readLine());
      bw.flush();
      bw.close();
      in.close();
 } catch (IOException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
 }
 }