/*
* Copyright (c) 1994, 2004, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*/ package java.io; /**
* This abstract class is the superclass of all classes representing
* an output stream of bytes. An output stream accepts output bytes
* and sends them to some sink.
* <p>
* Applications that need to define a subclass of
* <code>OutputStream</code> must always provide at least a method
* that writes one byte of output.
*
* @author Arthur van Hoff
* @see java.io.BufferedOutputStream
* @see java.io.ByteArrayOutputStream
* @see java.io.DataOutputStream
* @see java.io.FilterOutputStream
* @see java.io.InputStream
* @see java.io.OutputStream#write(int)
* @since JDK1.0
*/
public abstract class OutputStream implements Closeable, Flushable {
/**
* Writes the specified byte to this output stream. The general
* contract for <code>write</code> is that one byte is written
* to the output stream. The byte to be written is the eight
* low-order bits of the argument <code>b</code>. The 24
* high-order bits of <code>b</code> are ignored.
* <p>
* Subclasses of <code>OutputStream</code> must provide an
* implementation for this method.
*
* @param b the <code>byte</code>.
* @exception IOException if an I/O error occurs. In particular,
* an <code>IOException</code> may be thrown if the
* output stream has been closed.
*/
public abstract void write(int b) throws IOException; /**
* Writes <code>b.length</code> bytes from the specified byte array
* to this output stream. The general contract for <code>write(b)</code>
* is that it should have exactly the same effect as the call
* <code>write(b, 0, b.length)</code>.
*
* @param b the data.
* @exception IOException if an I/O error occurs.
* @see java.io.OutputStream#write(byte[], int, int)
*/
public void write(byte b[]) throws IOException {
write(b, 0, b.length);
} /**
* Writes <code>len</code> bytes from the specified byte array
* starting at offset <code>off</code> to this output stream.
* The general contract for <code>write(b, off, len)</code> is that
* some of the bytes in the array <code>b</code> are written to the
* output stream in order; element <code>b[off]</code> is the first
* byte written and <code>b[off+len-1]</code> is the last byte written
* by this operation.
* <p>
* The <code>write</code> method of <code>OutputStream</code> calls
* the write method of one argument on each of the bytes to be
* written out. Subclasses are encouraged to override this method and
* provide a more efficient implementation.
* <p>
* If <code>b</code> is <code>null</code>, a
* <code>NullPointerException</code> is thrown.
* <p>
* If <code>off</code> is negative, or <code>len</code> is negative, or
* <code>off+len</code> is greater than the length of the array
* <code>b</code>, then an <tt>IndexOutOfBoundsException</tt> is thrown.
*
* @param b the data.
* @param off the start offset in the data.
* @param len the number of bytes to write.
* @exception IOException if an I/O error occurs. In particular,
* an <code>IOException</code> is thrown if the output
* stream is closed.
*/
public void write(byte b[], int off, int len) throws IOException {
if (b == null) {
throw new NullPointerException();
} else if ((off < 0) || (off > b.length) || (len < 0) ||
((off + len) > b.length) || ((off + len) < 0)) {
throw new IndexOutOfBoundsException();
} else if (len == 0) {
return;
}
for (int i = 0 ; i < len ; i++) {
write(b[off + i]);
}
} /**
* Flushes this output stream and forces any buffered output bytes
* to be written out. The general contract of <code>flush</code> is
* that calling it is an indication that, if any bytes previously
* written have been buffered by the implementation of the output
* stream, such bytes should immediately be written to their
* intended destination.
* <p>
* If the intended destination of this stream is an abstraction provided by
* the underlying operating system, for example a file, then flushing the
* stream guarantees only that bytes previously written to the stream are
* passed to the operating system for writing; it does not guarantee that
* they are actually written to a physical device such as a disk drive.
* <p>
* The <code>flush</code> method of <code>OutputStream</code> does nothing.
*
* @exception IOException if an I/O error occurs.
*/
public void flush() throws IOException {
} /**
* Closes this output stream and releases any system resources
* associated with this stream. The general contract of <code>close</code>
* is that it closes the output stream. A closed stream cannot perform
* output operations and cannot be reopened.
* <p>
* The <code>close</code> method of <code>OutputStream</code> does nothing.
*
* @exception IOException if an I/O error occurs.
*/
public void close() throws IOException {
} }

OutputStream窥探的更多相关文章

  1. 窥探Vue.js 2.0

    title: 窥探Vue.js2.0 date: 2016-09-27 10:22:34 tags: vue category: 技术总结 --- 窥探Vue.js2.0 令人兴奋的Vue.js 2. ...

  2. 窥探Swift编程之错误处理与异常抛出

    在Swift 2.0版本中,Swift语言对其错误处理进行了新的设计,当然了,重新设计后的结果使得该错误处理系统用起来更爽.今天博客的主题就是系统的搞一下Swift中的错误处理,以及看一下Swift中 ...

  3. 窥探Swift之数组安全索引与数组切片

    今天是元宵节,祝大家元宵节快乐!在Swift中的数组和字典中下标是非常常见的,数组可以通过索引下标进行元素的查询,字典可以通过键下标来获取相应的值.在使用数组时,一个常见的致命错误就是数组越界.如果在 ...

  4. 窥探Swift系列博客说明及其Swift版本间更新

    Swift到目前为止仍在更新,每次更新都会推陈出新,一些Swift旧版本中的东西在新Swift中并不适用,而且新版本的Swift会添加新的功能.到目前为止,Swift为2.1版本.去年翻译的Swift ...

  5. 窥探Swift之使用Web浏览器编译Swift代码以及Swift中的泛型

    有的小伙伴会问:博主,没有Mac怎么学Swift语言呢,我想学Swift,但前提得买个Mac.非也,非也.如果你想了解或者初步学习Swift语言的话,你可以登录这个网站:http://swiftstu ...

  6. 窥探Swift之协议(Protocol)和委托代理(Delegate)回调的使用

    协议与委托代理回调在之前的博客中也是经常提到和用到的在<Objective-C中的委托(代理)模式>和<iOS开发之窥探UICollectionViewController(四) - ...

  7. 窥探Swift之类的继承与类的访问权限

    上一篇博客<窥探Swift之别具一格的Struct和Class>的博客可谓是给Swift中的类开了个头.关于类的内容还有很多,今天就来搞一下类中的继承以及类的访问权限.说到类的继承,接触过 ...

  8. 窥探Swift编程之强大的Switch

    之前初识Swift中的Switch语句时,真的是让人眼前一亮,Swift中Switch语句有好多特有而且特好用的功能.说到Switch, 只要是写过程序的小伙伴对Switch并不陌生.其在程序中的出镜 ...

  9. 窥探Swift之数组与字典

    说到数组和字典,只要是编过程的小伙伴并不陌生.在Swift中的数组与字典也有着一些让人眼前一亮的特性,今天的博客就来窥探一下Swift中的Array和Dictionary.还是沿袭之前的风格,在介绍S ...

随机推荐

  1. Vim配置IDE开发环境

    我的vim IDE界面: 1.安装Vim和Vim基本插件首先安装好Vim和Vim的基本插件.这些使用apt-get安装即可:lingd@ubuntu:~/arm$sudo apt-get instal ...

  2. 我今天坑了我们公司的IT程序猿。。。

    今天在在公司邮箱发现了一个很神奇的事情! 同事的邮箱下面有个微博链接的签名. 光这个当然不是神器的,如果只是个图片加链接我也会,关键是他的这个链接和他的微博是实时交互的,他在微博上的状态会在链接里动态 ...

  3. Careercup - Google面试题 - 5732809947742208

    2014-05-03 22:10 题目链接 原题: Given a dictionary, and a list of letters ( or consider as a string), find ...

  4. [resource]Github上维护的一个机器学习相关的框架,库和工具列表

    https://github.com/josephmisiti/awesome-machine-learning  A curated list of awesome Machine Learning ...

  5. ExtJS4.2学习(21)动态菜单与表格数据展示操作总结篇2

    运行效果: 此文介绍了根据操作左侧菜单在右面板展示相应内容. 一.主页 先看一下跳转主页的方式:由在webapp根目录下的index.jsp跳转至demo的index.jsp 下面是demo的inde ...

  6. C# mongodb [下]

    概述 传统的关系数据库一般由数据库(database).表(table).记录(record)三个层次概念组成,MongoDB是由数据库(database).集合(collection).文档对象(d ...

  7. hlsl 的tex函数

    texCUBE http://msdn.microsoft.com/en-us/library/windows/desktop/bb509687(v=vs.85).aspx

  8. 【锋利的JQuery-学习笔记】Tab选项卡的实现

    效果图: 关键点: 1.标签和标签内容都是用<ul><li>实现的,主要是通过Css样式设计成选项卡的模样. 2.用js代码实现点击标签时,标签内容的切换(做法是<div ...

  9. uva 11174

    刘书上例题 #include <cstdio> #include <cstdlib> #include <cmath> #include <map> # ...

  10. Unity3D 相关项目代码

    一.Application.PresistentDataPath 注意最后面是没有/的 public static string PresistentDataPathForEditor = " ...