csdn技术中心 java集合框架 (二).htm

javn的Java书籍JAVA集合框架.rar我看过了是很有帮助的

            <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><B><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana">2.2.AbstractList</SPAN></B><B><SPAN 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">和</SPAN></B><B><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana">AbstractSequentialList</SPAN></B><B><SPAN 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">抽象类</SPAN></B><B><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"><o:p></o:p></SPAN></B></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><SPAN 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">有两个抽象的 
            </SPAN><CODE><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">List</SPAN></CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"> 
            实现类：</SPAN><CODE><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">AbstractList</SPAN></CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"> 
            和 </SPAN><CODE><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">AbstractSequentialList</SPAN></CODE><SPAN 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">。像 
            </SPAN><CODE><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">AbstractSet</SPAN></CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"> 
            类一样，它们覆盖了</SPAN><SPAN 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-bidi-font-size: 12.0pt"> 
            </SPAN><CODE><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">equals()</SPAN></CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-bidi-font-size: 12.0pt"> 
            </SPAN><SPAN 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">和 
            </SPAN><CODE><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">hashCode()</SPAN></CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"> 
            方法以确保两个相等的集合返回相同的哈希码。若两个列表大小相等且包含顺序相同的相同元素，则这两个列表相等。这里的 
            </SPAN><CODE><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">hashCode()</SPAN></CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"> 
            实现在 </SPAN><CODE><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">List</SPAN></CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"> 
            接口定义中指定，而在这里实现。<o:p></o:p></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><SPAN 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">除了</SPAN><CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">equals()</SPAN></CODE><SPAN 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">和</SPAN><CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">hashCode()</SPAN></CODE><SPAN 
            style="FONT-SIZE: 10pt; 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 New'; mso-fareast-font-family: 宋体">AbstractList</SPAN></CODE><SPAN 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">和</SPAN><CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">AbstractSequentialList</SPAN></CODE><SPAN 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">实现了其余 
            </SPAN><CODE><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体">List</SPAN></CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"> 
            方法的一部分。因为数据的随机访问和顺序访问是分别实现的，使得具体列表实现的创建更为容易。需要定义的一套方法取决于您希望支持的行为。您<I>永远</I>不必亲自提供的是 
            </SPAN><CODE><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">iterator</SPAN></CODE><SPAN 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">方法的实现。<SPAN 
            lang=EN-US><o:p></o:p></SPAN></SPAN></P>
            <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><B><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana">2.3.</SPAN></B><CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体"> 
            </SPAN></CODE><CODE><B><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana; mso-fareast-font-family: 宋体; mso-bidi-font-family: 'Courier New'">LinkedList</SPAN></B></CODE><CODE><B><SPAN 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Courier New'; mso-hansi-font-family: 'Courier New'; mso-bidi-font-family: 'Courier New'">类和</SPAN></B></CODE><CODE><B><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana; mso-fareast-font-family: 宋体; mso-bidi-font-family: 'Courier New'">ArrayList</SPAN></B></CODE><CODE><B><SPAN 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Courier New'; mso-hansi-font-family: 'Courier New'; mso-bidi-font-family: 'Courier New'">类</SPAN></B></CODE><B><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"><o:p></o:p></SPAN></B></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><SPAN 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">在“集合框架”中有两种常规的 
            </SPAN><CODE><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">List</SPAN></CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"> 
            实现：</SPAN><CODE><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">ArrayList</SPAN></CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"> 
            和 </SPAN><CODE><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">LinkedList</SPAN></CODE><SPAN 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">。使用两种 
            </SPAN><CODE><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">List</SPAN></CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"> 
            实现的哪一种取决于您特定的需要。如果要支持随机访问，而不必在除尾部的任何位置插入或除去元素，那么，</SPAN><CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">ArrayList</SPAN></CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"> 
            提供了可选的集合。但如果，您要频繁的从列表的中间位置添加和除去元素，而只要顺序的访问列表元素，那么，</SPAN><CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">LinkedList</SPAN></CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"> 
            实现更好。<o:p></o:p></SPAN></P>
            <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><CODE><SPAN 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Courier New'">『</SPAN></CODE><CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">ArrayList</SPAN></CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"> 
            和 </SPAN><CODE><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">LinkedList</SPAN></CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"> 
            都实现 </SPAN><CODE><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">Cloneable</SPAN></CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt"> 
            接口，都提供了两个构造函数，一个无参的，一个接受另一个</SPAN><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-bidi-font-size: 12.0pt">Collection</SPAN><CODE><SPAN 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Courier New'">』<SPAN 
            lang=EN-US><o:p></o:p></SPAN></SPAN></CODE></P>
            <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><B><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana">2.3.1.</SPAN></B><CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体"> 
            </SPAN></CODE><CODE><B><SPAN lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Verdana; mso-fareast-font-family: 宋体; mso-bidi-font-family: 'Courier New'">LinkedList</SPAN></B></CODE><CODE><B><SPAN 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Courier New'; mso-hansi-font-family: 'Courier New'; mso-bidi-font-family: 'Courier New'">类</SPAN></B></CODE><CODE><B><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体"><o:p></o:p></SPAN></B></CODE></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><CODE><SPAN 
            lang=EN-US 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 宋体">LinkedList</SPAN></CODE><CODE><SPAN 
            style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Courier New'; mso-hansi-font-family: 'Courier New'; mso-bidi-font-family: 'Courier New'">类</SPAN></CODE><SPAN 
            style="FONT-SIZE: 10pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">添加了一些处理列表两端元素的方法。<SPAN 
            lang=EN-US><o:p></o:p></SPAN></SPAN></P>
            <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" 
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