Java.io.BufferedReader.ready() 方法

package com.codingdict;



import java.io.BufferedReader;

import java.io.StringReader;

import java.nio.CharBuffer;



public class BufferedReaderDemo {



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

      String s = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

      StringReader sr = null;

      BufferedReader br = null;



      try {

         sr = new StringReader(s);   



         // create new buffered reader

         br = new BufferedReader(sr);



         // Destination source is created

         CharBuffer target = CharBuffer.allocate(s.length());



         // ready is invoked to test if character stream is ready

         if(br.ready()) {

            br.read(target);

         }

         System.out.print(target.array());



      } catch(Exception e) {

         e.printStackTrace();

      } finally {



         // releases resources associated with the streams

         if(br!=null)

            br.close();

      }

   }

}