<html>
<!-- #BeginTemplate "/Templates/empolder-doc.dwt" -->
<head>
<title>|><| 太平洋电脑网 -> 网络学院</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<style type="text/css">
<!--
-->
</style>
<link rel="stylesheet" href="/pcedu/style/text.css">
<script language="JavaScript">
<!--
function MM_swapImgRestore() { //v3.0
var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function MM_preloadImages() { //v3.0
var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
function MM_swapImage() { //v3.0
var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->
</script>
</head>
<body bgcolor="#FFFFFF" topmargin=0 leftmargin=0 marginheight="0" onLoad="MM_preloadImages('/images/lefton.gif','/images/topon.gif')">
<a name="top"></a>
<script language="JavaScript" src="/pcedu/script/top.js">
</script>
<table width=760 border=0 cellspacing=0 cellpadding=0 align=center>
<tr>
<td width=194 height="56"><a href=http://www.pconline.com.cn><img src=http://www.pconline.com.cn/images/pconlinelogo.gif width=162 height=35 vspace=10 border=0></a></td>
<td width=406 height="56">
<script language="JavaScript" src="/pcedu/script/empolder_ad.js">
</script>
</td>
<td width=158 align=right height="56">
<script language="JavaScript" src="/pcedu/script/empolder_ad1.js">
</script>
</td>
<td align=right width=2 height="56"> </td>
</tr>
</table>
<table border=0 cellpadding=0 cellspacing=0 width=760 align="center">
<tbody>
<tr valign=bottom>
<td rowspan=2 width=172><img height=32 src="/pcedu/images/pcedu_lo.gif"
width=172 border="0"></td>
<td height=30 rowspan=2>
<table cellpadding=0 cellspacing=0 width="588" bgcolor="#FFA000" background="/pcedu/images/e_menu5.gif" border="0">
<tbody>
<tr valign="bottom">
<td height="17">
<script language="JavaScript" src="/pcedu/script/title_empolder.js">
</script>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
<tr></tr>
<tr bgcolor="#303880">
<td colspan=2 height=1 valign=bottom><img height=1
src="/pcedu/images/blank.gif" width=1></td>
</tr>
<tr>
<td colspan=2 height=5 valign=bottom><img height=5
src="/pcedu/images/blank.gif" width=1></td>
</tr>
</tbody>
</table>
<table width="760" cellspacing="0" cellpadding="0" align="center" height="614">
<tr>
<td width="170" height="616" valign="top" rowspan="2">
<table border="0" width="170" height="100%"
cellspacing="1" bgcolor="#000000">
<tr bgcolor="#F8F8D2">
<td width="100%" valign="top" height="307">
<script language="JavaScript" src="/pcedu/script/left_empolder.js">
</script>
</td>
</tr>
</table>
</td>
<td width="8" height="308"><img src="/pcedu/images/blank.gif" width="1" height="1"></td>
<td valign="top" height="444" width="582">
<table width="582" border="0" cellspacing="0" cellpadding="0" height="1" background="/images/line5.gif">
<tr>
<td height="1"></td>
</tr>
</table>
<!-- #BeginEditable "content" -->
<table width="582" border="0" cellspacing="8" cellpadding="0" background="/images/bg6.gif">
<tr>
<td valign="top">
<table width="100%" border="0" cellspacing="8" cellpadding="0" background="/images/point.gif">
<tr>
<td height="4" colspan="3"></td>
</tr>
<tr>
<td height="22" colspan="3">
<div align="center" class="title">JAVA程序员必读：基础篇（3）语言基础</div>
</td>
</tr>
<tr valign="bottom">
<td width="90" height="18">
<div align="right" class="gray"> </div>
<div class="gray"></div>
</td>
<td height="18">
<div align="center"><font color="#666666">编译：ZSC/太平洋网络学院</font></div>
</td>
<td width="90">
<div align="right" class="gray"><a href="mailto:tntst@pconline.com.cn">［责编:爆破手］</a></div>
</td>
</tr>
<tr valign="bottom">
<td colspan="3" height="0"></td>
</tr>
</table>
<p class="article"> <b>语言基础</b> </p>
<p></p>
<p class="article"><b>3.1.1 数据类型</b></p>
<p class="article"> 每一个变量必须有一个数据类型。一个变量的数据类型决定了变量能容纳的数值和操作符。比如 ，在MaxVariablesDemo程序中，声明int
largestInteger决定了largestInteger是一个整型数据类型（int）。整型只能容纳整型数（可以是正数也可以是负数）。你可以完成算术操作，比如，整型变量的加法等等。</p>
<p class="article"> JAVA程序语言有两类的数据类型：原始和引用。一个原始类型的变量为它的类型包含了适当大小和格式的单一数值：一个数字、字符或者一个布尔型数值。比如，一个整型数值是一个32位数据。</p>
<p class="article"> 下面表格所有的JAVA支持的所有原始数据类型，还给出了它们的大小和格式以及简短的描述。MaxVariablesDemo程序为每一个原始类型声明了一个变量：</p>
<p> </p>
<table BORDER cellspacing=1 cellpadding=7 width=98% align="center">
<tr>
<td width="33%" valign="TOP">
<p align="CENTER" class="article">关键字
</td>
<td width="33%" valign="TOP">
<p align="CENTER" class="article">描述
</td>
<td width="33%" valign="TOP">
<p align="CENTER" class="article">大小/格式
</td>
</tr>
<tr>
<td valign="TOP" colspan=3>
<p align="CENTER" class="article">整型
</td>
</tr>
<tr>
<td width="33%" valign="TOP">
<p align="CENTER" class="article">byte
</td>
<td width="33%" valign="TOP">
<p align="CENTER" class="article">字节长度整型
</td>
<td width="33%" valign="TOP">
<p align="CENTER" class="article">8位两个补码
</td>
</tr>
<tr>
<td width="33%" valign="TOP">
<p align="CENTER" class="article">Short
</td>
<td width="33%" valign="TOP">
<p align="CENTER" class="article">短整型
</td>
<td width="33%" valign="TOP">
<p align="CENTER" class="article">16位两个补码
</td>
</tr>
<tr>
<td width="33%" valign="TOP">
<p align="CENTER" class="article">int
</td>
<td width="33%" valign="TOP">
<p align="CENTER" class="article">整型
</td>
<td width="33%" valign="TOP">
<p align="CENTER" class="article">32位两个补码
</td>
</tr>
<tr>
<td width="33%" valign="TOP">
<p align="CENTER" class="article">long
</td>
<td width="33%" valign="TOP">
<p align="CENTER" class="articl
JAVA程序员必读基础篇
4星 · 超过85%的资源 需积分: 3 67 浏览量
2009-06-04
01:10:13
上传
评论
收藏 586KB RAR 举报 
JAVA程序员必读基础篇 （168个子文件） 
Thumbs.db 92KB
Image60.gif 12KB Image52.gif 7KB Image45.gif 6KB Image66.gif 5KB Image44.gif 5KB Image61.gif 4KB Image47.gif 4KB Image54.gif 4KB Image67.gif 3KB Image55.gif 3KB Image59.gif 3KB Image56.gif 3KB Image46.gif 3KB Image50.gif 3KB Image58.gif 3KB Image64.gif 3KB Image53.gif 3KB Image62.gif 3KB Image49.gif 3KB Image39.gif 3KB Image43.gif 3KB Image57.gif 3KB Image40.gif 2KB Image42.gif 2KB Image51.gif 2KB Image63.gif 2KB Image41.gif 2KB Image65.gif 2KB Image48.gif 2KB 10729.htm 17KB 10804.htm 15KB 10806_1.htm 14KB 10801_1.htm 13KB 10804_1.htm 13KB 10808_2.htm 13KB 10803_2.htm 13KB 10729_1.htm 12KB 10808_1.htm 12KB 10802_4.htm 12KB 10907_1.htm 11KB 10728_1.htm 11KB 10820.htm 11KB 10802_6.htm 11KB 10803.htm 11KB 10802_1.htm 11KB 10718_4.htm 11KB 10803_1.htm 11KB 10718_2.htm 11KB 10807.htm 11KB 10822_1.htm 11KB 10810.htm 10KB 10817_1.htm 10KB 10807_1.htm 10KB 10724_1.htm 10KB 10731_1.htm 10KB 10818_1.htm 10KB 10718_1.htm 10KB 10817.htm 10KB 10830.htm 10KB 10912_3.htm 10KB 10922_1.htm 10KB 10717.htm 10KB 10802.htm 10KB 10719_2.htm 10KB 10719_3.htm 10KB 10718.htm 10KB 10722_1.htm 10KB 10907.htm 10KB 10809.htm 10KB 10830_1.htm 10KB 10815.htm 10KB 10718_5.htm 10KB 10716.htm 10KB 10818.htm 10KB 10825.htm 10KB 10921_1.htm 10KB 10726.htm 10KB 10802_2.htm 10KB 10828_1.htm 10KB 10823_2.htm 10KB 10804_2.htm 10KB 10718_3.htm 10KB 10815_1.htm 10KB 10721.htm 10KB 10802_5.htm 10KB 10828_2.htm 10KB 10830_2.htm 10KB 10815_2.htm 10KB 10811_1.htm 9KB 10813.htm 9KB 10908_1.htm 9KB 10920.htm 9KB 10808.htm 9KB 10913.htm 9KB 10831_1.htm 9KB 10823.htm 9KB 10912.htm 9KB 10912_1.htm 9KB 10720.htm 9KB共 168 条
- 1
- 2
资源评论
bgxue872012-11-06确实是基础篇，感谢分享！！！- w2144506002012-06-20都是html格式
liandahu
- 粉丝: 17
- 资源: 56
