📄 csdn技术中心 java集合框架 (一).htm
字号:
src="CSDN技术中心 Java集合框架 (一).files/CSDN_Dev_Image_2003-11-30926010.jpg"
align=absMiddle border=0></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
lang=EN-US><v:shapetype id=_x0000_t75 coordsize="21600,21600"
o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe"
filled="f" stroked="f"><v:stroke
joinstyle="miter"></v:stroke><v:formulas><v:f
eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f
eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f
eqn="prod @2 1 2"></v:f><v:f
eqn="prod @3 21600 pixelWidth"></v:f><v:f
eqn="prod @3 21600 pixelHeight"></v:f><v:f
eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f
eqn="prod @7 21600 pixelWidth"></v:f><v:f
eqn="sum @8 21600 0"></v:f><v:f
eqn="prod @7 21600 pixelHeight"></v:f><v:f
eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:extrusionok="f"
gradientshapeok="t" o:connecttype="rect"></v:path><o:lock
v:ext="edit" aspectratio="t"></o:lock></v:shapetype></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center"
align=center><B><SPAN lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-bidi-font-size: 12.0pt">Java
2</SPAN></B><B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt">集合框架图</SPAN></B><B><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Arial Unicode MS'; mso-bidi-font-size: 12.0pt"><o:p></o:p></SPAN></B></P>
<UL style="MARGIN-TOP: 0cm" type=disc>
<LI class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; COLOR: black; tab-stops: list 36.0pt; mso-list: l22 level1 lfo1"><CODE><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'">集合接口：</SPAN></CODE><CODE><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 宋体">6</SPAN></CODE><CODE><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 'Times New Roman'">个接口（短虚线表示），表示不同集合类型，是集合框架的基础。</SPAN></CODE><CODE><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana; mso-bidi-font-family: 'Times New Roman'; mso-fareast-font-family: 宋体"><o:p></o:p></SPAN></CODE>
<LI class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; COLOR: black; tab-stops: list 36.0pt; mso-list: l22 level1 lfo1"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">抽象类：</SPAN><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana">5</SPAN><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">个抽象类（长虚线表示），对集合接口的部分实现。可扩展为自定义集合类。</SPAN><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"><o:p></o:p></SPAN>
<LI class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; COLOR: black; tab-stops: list 36.0pt; mso-list: l22 level1 lfo1"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">实现类：</SPAN><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana">8</SPAN><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">个实现类（实线表示），对接口的具体实现。</SPAN><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"><o:p></o:p></SPAN></LI></UL>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt"><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">在很大程度上，一旦您理解了接口，您就理解了框架。虽然您总要创建接口特定的实现，但访问实际集合的方法应该限制在接口方法的使用上；因此，允许您更改基本的数据结构而不必改变其它代码。</SPAN><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 36pt; TEXT-INDENT: -36pt; tab-stops: list 18.0pt; mso-list: l22 level1 lfo1"><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Symbol; mso-bidi-font-family: 'Arial Unicode MS'; mso-bidi-font-size: 12.0pt">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN><CODE><SPAN lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Courier">Collection</SPAN></CODE><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana">
</SPAN><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">接口是一组允许重复的对象。</SPAN><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Arial Unicode MS'; mso-bidi-font-size: 12.0pt"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 36pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l22 level1 lfo1"><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Symbol; mso-bidi-font-family: 'Arial Unicode MS'; mso-bidi-font-size: 12.0pt">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN><CODE><SPAN lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Courier">Set</SPAN></CODE><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana">
</SPAN><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">接口继承</SPAN><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana">
</SPAN><CODE><SPAN lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Courier">Collection</SPAN></CODE><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">，但不允许重复，</SPAN><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">使用自己内部的一个排列机制</SPAN><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">。</SPAN><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana">
</SPAN><SPAN lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Arial Unicode MS'; mso-bidi-font-size: 12.0pt"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 36pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l22 level1 lfo1"><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Symbol; mso-bidi-font-family: 'Arial Unicode MS'; mso-bidi-font-size: 12.0pt">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN><CODE><SPAN lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Courier">List</SPAN></CODE><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana">
</SPAN><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">接口继承</SPAN><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana">
</SPAN><CODE><SPAN lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Courier">Collection</SPAN></CODE><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">，允许重复，</SPAN><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">以元素安插的次序来放置元素，不会重新排列。</SPAN><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Arial Unicode MS'; mso-bidi-font-size: 12.0pt"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l22 level1 lfo1"><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Symbol">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN><SPAN lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana">Map</SPAN><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">接口是</SPAN><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">一组成对的键－值对象，即所持有的是</SPAN><CODE><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Courier">key-value
pairs</SPAN></CODE><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">。</SPAN><CODE><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Courier">Map</SPAN></CODE><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">中不能有重复的</SPAN><CODE><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Courier">key</SPAN></CODE><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">。拥有自己的内部排列机制。</SPAN><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana"><o:p></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l22 level1 lfo1"><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Symbol">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">容器中的元素类型都为<SPAN
lang=EN-US>Object。从容器取得元素时，必须把它转换成原来的类型。</SPAN></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l22 level1 lfo1"><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"><SPAN
lang=EN-US><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Courier New'"><IMG
alt="" hspace=0
src="CSDN技术中心 Java集合框架 (一).files/CSDN_Dev_Image_2003-11-30926012.jpg"
align=absMiddle border=0></SPAN></SPAN></SPAN><SPAN lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
lang=EN-US></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center"
align=center><B><SPAN lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'">Java
2</SPAN></B><B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">简化集合框架图</SPAN></B><B><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana"><o:p></o:p></SPAN></B></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center"
align=center><B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">第二部分</SPAN></B><B><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana"><SPAN
style="mso-tab-count: 2">
</SPAN></SPAN></B><B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">集合接口</SPAN></B><B><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana"><o:p></o:p></SPAN></B></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><CODE><B><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Courier">1.Collection</SPAN></B></CODE><B><SPAN
lang=EN-US
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana">
</SPAN></B><B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">接口</SPAN></B><B><SPAN
lang=EN-US
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -