Java示例字符串已复制

import java.io.*;



public class Main {

   public static void main(String[] args) throws Exception {

      BufferedWriter out1 = new BufferedWriter(new FileWriter("srcfile"));

      out1.write("string to be copied\n");

      out1.close();

      InputStream in = new FileInputStream(new File("srcfile"));

      OutputStream out = new FileOutputStream(new File("destnfile"));

      byte[] buf = new byte[1024];

      int len;



      while ((len = in.read(buf)) > 0) {

         out.write(buf, 0, len);

      }

      in.close();

      out.close();

      BufferedReader in1 = new BufferedReader(new FileReader("destnfile"));

      String str;



      while ((str = in1.readLine()) != null) {

         System.out.println(str);

      }

      in.close();

   }

}