Java.io.Reader.read char buff() 方法

package com.codingdict;



import java.io.*;

import java.nio.CharBuffer;



public class ReaderDemo {



   public static void main(String[] args) {

      String s = "Hello world";



      // create a new Char Buffer with capacity of 12

      CharBuffer cb = CharBuffer.allocate(12);



      // create a StringReader

      Reader reader = new StringReader(s);



      try {



         // read characters into a char buffer

         reader.read(cb);



         // flip the char buffer

         cb.flip();



         // print the char buffer

         System.out.println(cb.toString());



         // Close the stream 

         reader.close();



      } catch (IOException ex) {

         ex.printStackTrace();

      }

   }

}