package com.meson.pushinputstream;import java.io.ByteArrayInputStream;import java.io.IOException;import java.io.PushbackInputStream;/** * Created by Administrator on 2014-11-21. */public class PushInputStreamDemo {    public static void main(String[] args) throws IOException{        String str = "www.mltmeson.com";        PushbackInputStream push = null;//        ByteArrayInputStream bai = null;        bai = new ByteArrayInputStream(str.getBytes());        push = new PushbackInputStream(bai);        System.out.println("读取之后的数据为:");        int temp = 0;        while((temp = push.read())!= - 1){            if(temp == '.'){                push.unread(temp);                temp =  push.read();                System.out.println("（退回"+(char)temp+")");            }            else{                System.out.println((char)temp);            }        }    }}