Java.io.PushbackInputStream.read Byte len() 方法

package com.codingdict;



import java.io.*;



public class PushbackInputStreamDemo {



   public static void main(String[] args) {



      // declare a buffer and initialize its size:

      byte[] arrByte = new byte[1024];



      // create an array for our message

      byte[] byteArray = new byte[]{'H', 'e', 'l', 'l', 'o'};



      // create object of PushbackInputStream class for specified stream

      InputStream is = new ByteArrayInputStream(byteArray);

      PushbackInputStream pis = new PushbackInputStream(is);



      try {



         // read a char into our array

         pis.read(arrByte, 0, 3);



         // print arrByte

         for (int i = 0; i < 3; i++) {

            System.out.print((char) arrByte[i]);

         }



      } catch (Exception ex) {

         ex.printStackTrace();

      }

   }

}