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Attributes (Java 2 Platform SE v1.4.2)
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<H2>

java.util.jar
 
Class Attributes</H2>
<PRE>
<A HREF="../../../java/lang/Object.html" title="class in java.lang">java.lang.Object</A>
<IMG SRC="../../../resources/inherit.gif" ALT="extended by">java.util.jar.Attributes
</PRE>
<DL>
<DT>All Implemented Interfaces: <DD><A HREF="../../../java/lang/Cloneable.html" title="interface in java.lang">Cloneable</A>, <A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A></DD>
</DL>
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<DL>
<DT>public class Attributes<DT>extends <A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A><DT>implements <A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A>, <A HREF="../../../java/lang/Cloneable.html" title="interface in java.lang">Cloneable</A></DL>

The Attributes class maps Manifest attribute names to associated string
values. Valid attribute names are case-insensitive, are restricted to
the ASCII characters in the set [0-9a-zA-Z_-], and cannot exceed 70
characters in length. Attribute values can contain any characters and
will be UTF8-encoded when written to the output stream. See the
<a href="../../../../guide/jar/jar.html">JAR File Specification</a>
for more information about valid attribute names and values.
Attributes类将Manifest属性名映射为对应的字符串值。属性名忽略大小写，但被限制为[0-9a-zA-Z_-]集中的ASCII字符，
长度不能超出70。属性值可以包含任意字符，以UTF-8编码输出到输出流。有效属性名和属性值的更多信息查看JAR文件规范。

<DL>
<DT>Since:</DT>
<DD>1.2</DD>
<DT>See Also:<DD><A HREF="../../../java/util/jar/Manifest.html" title="class in java.util.jar"><CODE>Manifest</CODE></A></DL>
<HR>

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<CODE>static class</CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.Name.html" title="class in java.util.jar">Attributes.Name</A></CODE>

The Attributes.Name class represents an attribute name stored in
this Map. Attributes.Name类，表示存储在Map中的属性名称。</TD>
</TR>
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Field Summary</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>protected  <A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A></CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#map">map</A></CODE>

The attribute name-value mappings. 属性名-值映射。</TD>
</TR>
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<A NAME="constructor_summary"></A>
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Constructor Summary</TD>
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<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#Attributes()">Attributes</A>()</CODE>

Constructs a new, empty Attributes object with default size.
创建一个默认大小的空Attributes对象。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#Attributes(java.util.jar.Attributes)">Attributes</A>(<A HREF="../../../java/util/jar/Attributes.html" title="class in java.util.jar">Attributes</A> attr)</CODE>

Constructs a new Attributes object with the same attribute name-value
mappings as in the specified Attributes.
创建一个使用同指定Attributes相同属性名-值映射的Attributes对象。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#Attributes(int)">Attributes</A>(int size)</CODE>

Constructs a new, empty Attributes object with the specified
initial size.
创建一个指定初始大小的空Attributes对象。</TD>
</TR>
</TABLE>

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Method Summary</TD>
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<CODE> void</CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#clear()">clear</A>()</CODE>

Removes all attributes from this Map.
清空Map中所有属性。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> <A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A></CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#clone()">clone</A>()</CODE>

Returns a copy of the Attributes, implemented as follows:
返回该Attributes的拷贝。
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#containsKey(java.lang.Object)">containsKey</A>(<A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> name)</CODE>

Returns true if this Map contains the specified attribute name (key).
如果该Map中包含指定属性名（key），返回true。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#containsValue(java.lang.Object)">containsValue</A>(<A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> value)</CODE>

Returns true if this Map maps one or more attribute names (keys)
to the specified value.
如果该Map将一个或多个属性名（keys）映射为指定的值，返回true。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> <A HREF="../../../java/util/Set.html" title="interface in java.util">Set</A></CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#entrySet()">entrySet</A>()</CODE>

Returns a Collection view of the attribute name-value mappings
contained in this Map.
返回包含在此Map中的属性名-值的集合视图。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#equals(java.lang.Object)">equals</A>(<A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> o)</CODE>

Compares the specified Attributes object with this Map for equality.
将该指定Attributes对象和Map比较是否相同。
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> <A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A></CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#get(java.lang.Object)">get</A>(<A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> name)</CODE>

Returns the value of the specified attribute name, or null if the
attribute name was not found. 返回此给定属性名的值，如果未找到，返回null。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> <A HREF="../../../java/lang/String.html" title="class in java.lang">String</A></CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#getValue(java.util.jar.Attributes.Name)">getValue</A>(<A HREF="../../../java/util/jar/Attributes.Name.html" title="class in java.util.jar">Attributes.Name</A> name)</CODE>

Returns the value of the specified Attributes.Name, or null if the
attribute was not found. 返回此给定Attributes.Name的值，如果未找到，返回null。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> <A HREF="../../../java/lang/String.html" title="class in java.lang">String</A></CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#getValue(java.lang.String)">getValue</A>(<A HREF="../../../java/lang/String.html" title="class in java.lang">String</A> name)</CODE>

Returns the value of the specified attribute name, specified as
a string, or null if the attribute was not found.
返回此给定字符串表示的属性名的值，如果未找到，返回null。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> int</CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#hashCode()">hashCode</A>()</CODE>

Returns the hash code value for this Map.
返回该Map的hash码值。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#isEmpty()">isEmpty</A>()</CODE>

Returns true if this Map contains no attributes.
如果该Map不包含属性值，返回true。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> <A HREF="../../../java/util/Set.html" title="interface in java.util">Set</A></CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#keySet()">keySet</A>()</CODE>

Returns a Set view of the attribute names (keys) contained in this Map.
返回包含在此Map中属性名（keys）的集合视图。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> <A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A></CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#put(java.lang.Object, java.lang.Object)">put</A>(<A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> name,
<A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> value)</CODE>

Associates the specified value with the specified attribute name
(key) in this Map. 在Map中关联指定的属性名（key）和属性值。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> void</CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#putAll(java.util.Map)">putAll</A>(<A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A> attr)</CODE>

Copies all of the attribute name-value mappings from the specified
Attributes to this Map.从指定的Attributes中向该Map拷贝所有的属性名-值映射。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> <A HREF="../../../java/lang/String.html" title="class in java.lang">String</A></CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#putValue(java.lang.String, java.lang.String)">putValue</A>(<A HREF="../../../java/lang/String.html" title="class in java.lang">String</A> name,
<A HREF="../../../java/lang/String.html" title="class in java.lang">String</A> value)</CODE>

Associates the specified value with the specified attribute name,
specified as a String. 将此给定字符串表示的属性名关联为指定值。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> <A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A></CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#remove(java.lang.Object)">remove</A>(<A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> name)</CODE>

Removes the attribute with the specified name (key) from this Map.
从该Map中删除指定名称（key）的属性。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> int</CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#size()">size</A>()</CODE>

Returns the number of attributes in this Map.
返回此Map中属性数量。</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> <A HREF="../../../java/util/Collection.html" title="interface in java.util">Collection</A></CODE></TD>
<TD><CODE><A HREF="../../../java/util/jar/Attributes.html#values()">values</A>()</CODE>

Returns a Collection view of the attribute values contained in this Map.
返回此Map中属性值的集合视图。</TD>
</TR>
</TABLE>
 <A NAME="methods_inherited_from_class_java.lang.Object"></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD>Methods inherited from class java.lang.<A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../java/lang/Object.html#finalize()">finalize</A>, <A HREF="../../../java/lang/Object.html#getClass()">getClass</A>, <A HREF="../../../java/lang/Object.html#notify()">notify</A>, <A HREF="../../../java/lang/Object.html#notifyAll()">notifyAll</A>, <A HREF="../../../java/lang/Object.html#toString()">toString</A>, <A HREF="../../../java/lang/Object.html#wait()">wait</A>, <A HREF="../../../java/lang/Object.html#wait(long)">wait</A>, <A HREF="../../../java/lang/Object.html#wait(long, int)">wait</A></CODE></TD>
</TR>
</TABLE>

<A NAME="field_detail"></A>
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Field Detail</TD>
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</TABLE>

<A NAME="map"></A><H3>
map</H3>
<PRE>
protected <A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A> map</PRE>
<DL>
<DD>The attribute name-value mappings.
属性名-值映射。

<DL>
</DL>
</DL>

<A NAME="constructor_detail"></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1>
Constructor Detail</TD>
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</TABLE>

<A NAME="Attributes()"></A><H3>
Attributes</H3>
<PRE>
public Attributes()</PRE>
<DL>
<DD>Constructs a new, empty Attributes object with default size.
创建一个默认大小的空Attributes对象。

</DL>
<HR>

<A NAME="Attributes(int)"></A><H3>
Attributes</H3>
<PRE>
public Attributes(int size)</PRE>
<DL>
<DD>Constructs a new, empty Attributes object with the specified
initial size.
创建一个指定初始大小的空Attributes对象。

<DT>Parameters:<DD><CODE>size</CODE> - the initial number of attributes 属性的初始数量</DL>
<HR>

<A NAME="Attributes(java.util.jar.Attributes)"></A><H3>
Attributes</H3>
<PRE>
public Attributes(<A HREF="../../../java/util/jar/Attributes.html" title="class in java.util.jar">Attributes</A> attr)</PRE>
<DL>
<DD>Constructs a new Attributes object with the same attribute name-value
mappings as in the specified Attributes.
创建一个使用同指定Attributes相同属性名-值映射的Attributes对象。

<DT>Parameters:<DD><CODE>attr</CODE> - the specified Attributes 指定的Attributes</DL>

<A NAME="method_detail"></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1>
Method Detail</TD>
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</TABLE>

<A NAME="get(java.lang.Object)"></A><H3>
get</H3>
<PRE>
public <A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> get(<A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> name)</PRE>
<DL>
<DD>Returns the value of the specified attribute name, or null if the
attribute name was not found.
返回此给定属性名的值，如果未找到，返回null。

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../java/util/Map.html#get(java.lang.Object)">get</A></CODE> in interface <CODE><A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>name</CODE> - the attribute name 属性名
<DT>Returns:<DD>the value of the specified attribute name, or null if
not found. 该属性前的值，如果没有，返回null。<DT>See Also:<DD><A HREF="../../../java/util/Map.html#containsKey(java.lang.Object)"><CODE>Map.containsKey(Object)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getValue(java.lang.String)"></A><H3>
getValue</H3>
<PRE>
public <A HREF="../../../java/lang/String.html" title="class in java.lang">String</A> getValue(<A HREF="../../../java/lang/String.html" title="class in java.lang">String</A> name)</PRE>
<DL>
<DD>Returns the value of the specified attribute name, specified as
a string, or null if the attribute was not found. The attribute
name is case-insensitive.
返回此给定字符串表示的属性名的值，如果未找到，返回null。属性名忽略大小写。

This method is defined as:
方法如下定义：
<pre>
return (String)get(new Attributes.Name((String)name));
</pre>

<DD><DL>
</DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>name</CODE> - the attribute name as a string 字符串表示的属性名
<DT>Returns:<DD>the String value of the specified attribute name, or null if
not found. 此给定字符串表示的属性名的值，如果未找到，返回null。
<DT>Throws:
<DD><CODE><A HREF="../../../java/lang/IllegalArgumentException.html" title="class in java.lang">IllegalArgumentException</A></CODE> - if the attribute name is invalid
如果属性名无效时抛出</DL>
</DD>
</DL>
<HR>

<A NAME="getValue(java.util.jar.Attributes.Name)"></A><H3>
getValue</H3>
<PRE>
public <A HREF="../../../java/lang/String.html" title="class in java.lang">String</A> getValue(<A HREF="../../../java/util/jar/Attributes.Name.html" title="class in java.util.jar">Attributes.Name</A> name)</PRE>
<DL>
<DD>Returns the value of the specified Attributes.Name, or null if the
attribute was not found.
返回此给定Attributes.Name的值，如果未找到，返回null。

This method is defined as:
方法如下定义：
<pre>
return (String)get(name);
</pre>

<DD><DL>
</DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>name</CODE> - the Attributes.Name object Attributes.Name对象
<DT>Returns:<DD>the String value of the specified Attribute.Name, or null if
not found. 此给定Attributes.Name的值，如果未找到，返回null。</DL>
</DD>
</DL>
<HR>

<A NAME="put(java.lang.Object, java.lang.Object)"></A><H3>
put</H3>
<PRE>
public <A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> put(<A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> name,
<A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> value)</PRE>
<DL>
<DD>Associates the specified value with the specified attribute name
(key) in this Map. If the Map previously contained a mapping for
the attribute name, the old value is replaced.
在Map中关联指定的属性名（key）和属性值。如果该Map中已包含了该属性名的映射，将替换旧值。

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../java/util/Map.html#put(java.lang.Object, java.lang.Object)">put</A></CODE> in interface <CODE><A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>name</CODE> - the attribute name 属性名<DD><CODE>value</CODE> - the attribute value 属性值
<DT>Returns:<DD>the previous value of the attribute, or null if none 该属性前的值，如果没有，返回null
<DT>Throws:
<DD><CODE><A HREF="../../../java/lang/ClassCastException.html" title="class in java.lang">ClassCastException</A></CODE> - if the name is not a Attributes.Name
or the value is not a String 如果名称不是Attributes.Name或者字符串时抛出</DL>
</DD>
</DL>
<HR>

<A NAME="putValue(java.lang.String, java.lang.String)"></A><H3>
putValue</H3>
<PRE>
public <A HREF="../../../java/lang/String.html" title="class in java.lang">String</A> putValue(<A HREF="../../../java/lang/String.html" title="class in java.lang">String</A> name,
<A HREF="../../../java/lang/String.html" title="class in java.lang">String</A> value)</PRE>
<DL>
<DD>Associates the specified value with the specified attribute name,
specified as a String. The attributes name is case-insensitive.
If the Map previously contained a mapping for the attribute name,
the old value is replaced.
将此给定字符串表示的属性名关联为指定值。属性名忽略大小写。如果该Map中已包含了该属性名的映射，将替换旧值。

This method is defined as: 方法如下定义：
<pre>
return (String)put(new Attributes.Name(name), value);
</pre>

<DD><DL>
</DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>name</CODE> - the attribute name as a string 字符串表示的属性名<DD><CODE>value</CODE> - the attribute value 属性值
<DT>Returns:<DD>the previous value of the attribute, or null if none 该属性前的值，如果没有，返回null。
<DT>Throws:
<DD><CODE><A HREF="../../../java/lang/IllegalArgumentException.html" title="class in java.lang">IllegalArgumentException</A></CODE> - if the attribute name is invalid 如果属性名无效时抛出</DL>
</DD>
</DL>
<HR>

<A NAME="remove(java.lang.Object)"></A><H3>
remove</H3>
<PRE>
public <A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> remove(<A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> name)</PRE>
<DL>
<DD>Removes the attribute with the specified name (key) from this Map.
Returns the previous attribute value, or null if none.
从该Map中删除指定名称（key）的属性。返回该属性前的值，如果没有，返回null。

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../java/util/Map.html#remove(java.lang.Object)">remove</A></CODE> in interface <CODE><A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>name</CODE> - attribute name 属性名
<DT>Returns:<DD>the previous value of the attribute, or null if none 该属性前的值，如果没有，返回null。</DL>
</DD>
</DL>
<HR>

<A NAME="containsValue(java.lang.Object)"></A><H3>
containsValue</H3>
<PRE>
public boolean containsValue(<A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> value)</PRE>
<DL>
<DD>Returns true if this Map maps one or more attribute names (keys)
to the specified value.
如果该Map将一个或多个属性名（keys）映射为指定的值，返回true。

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../java/util/Map.html#containsValue(java.lang.Object)">containsValue</A></CODE> in interface <CODE><A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>value</CODE> - the attribute value 属性值
<DT>Returns:<DD>true if this Map maps one or more attribute names to
the specified value 如果该Map将一个或多个属性名（keys）映射为指定的值，返回true</DL>
</DD>
</DL>
<HR>

<A NAME="containsKey(java.lang.Object)"></A><H3>
containsKey</H3>
<PRE>
public boolean containsKey(<A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> name)</PRE>
<DL>
<DD>Returns true if this Map contains the specified attribute name (key).
如果该Map中包含指定属性名（key），返回true。

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../java/util/Map.html#containsKey(java.lang.Object)">containsKey</A></CODE> in interface <CODE><A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>name</CODE> - the attribute name 属性名
<DT>Returns:<DD>true if this Map contains the specified attribute name 如果该Map中包含指定属性名（key），返回true</DL>
</DD>
</DL>
<HR>

<A NAME="putAll(java.util.Map)"></A><H3>
putAll</H3>
<PRE>
public void putAll(<A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A> attr)</PRE>
<DL>
<DD>Copies all of the attribute name-value mappings from the specified
Attributes to this Map. Duplicate mappings will be replaced.
从指定的Attributes中向该Map拷贝所有的属性名-值映射。替换为复制映射。

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../java/util/Map.html#putAll(java.util.Map)">putAll</A></CODE> in interface <CODE><A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>attr</CODE> - the Attributes to be stored in this map 存在Map中的Attributes
<DT>Throws:
<DD><CODE><A HREF="../../../java/lang/ClassCastException.html" title="class in java.lang">ClassCastException</A></CODE> - if attr is not an Attributes 如果attr不是Attributes时抛出</DL>
</DD>
</DL>
<HR>

<A NAME="clear()"></A><H3>
clear</H3>
<PRE>
public void clear()</PRE>
<DL>
<DD>Removes all attributes from this Map.
清空Map中所有属性。

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../java/util/Map.html#clear()">clear</A></CODE> in interface <CODE><A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="size()"></A><H3>
size</H3>
<PRE>
public int size()</PRE>
<DL>
<DD>Returns the number of attributes in this Map.
返回此Map中属性数量。

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../java/util/Map.html#size()">size</A></CODE> in interface <CODE><A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A></CODE></DL>
</DD>
<DD><DL>

<DT>Returns:<DD>the number of key-value mappings in this map. 此Map中属性数量。</DL>
</DD>
</DL>
<HR>

<A NAME="isEmpty()"></A><H3>
isEmpty</H3>
<PRE>
public boolean isEmpty()</PRE>
<DL>
<DD>Returns true if this Map contains no attributes.
如果该Map不包含属性值，返回true。

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../java/util/Map.html#isEmpty()">isEmpty</A></CODE> in interface <CODE><A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A></CODE></DL>
</DD>
<DD><DL>

<DT>Returns:<DD><tt>true</tt> if this map contains no key-value mappings. 如果该Map不包含属性值，返回true。</DL>
</DD>
</DL>
<HR>

<A NAME="keySet()"></A><H3>
keySet</H3>
<PRE>
public <A HREF="../../../java/util/Set.html" title="interface in java.util">Set</A> keySet()</PRE>
<DL>
<DD>Returns a Set view of the attribute names (keys) contained in this Map.
返回包含在此Map中属性名（keys）的集合视图。

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../java/util/Map.html#keySet()">keySet</A></CODE> in interface <CODE><A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A></CODE></DL>
</DD>
<DD><DL>

<DT>Returns:<DD>a set view of the keys contained in this map. 包含在此Map中属性名（keys）的集合视图。</DL>
</DD>
</DL>
<HR>

<A NAME="values()"></A><H3>
values</H3>
<PRE>
public <A HREF="../../../java/util/Collection.html" title="interface in java.util">Collection</A> values()</PRE>
<DL>
<DD>Returns a Collection view of the attribute values contained in this Map.
返回此Map中属性值的集合视图。

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../java/util/Map.html#values()">values</A></CODE> in interface <CODE><A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A></CODE></DL>
</DD>
<DD><DL>

<DT>Returns:<DD>a collection view of the values contained in this map. 此Map中属性值的集合视图。</DL>
</DD>
</DL>
<HR>

<A NAME="entrySet()"></A><H3>
entrySet</H3>
<PRE>
public <A HREF="../../../java/util/Set.html" title="interface in java.util">Set</A> entrySet()</PRE>
<DL>
<DD>Returns a Collection view of the attribute name-value mappings
contained in this Map.
返回包含在此Map中的属性名-值的集合视图。

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../java/util/Map.html#entrySet()">entrySet</A></CODE> in interface <CODE><A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A></CODE></DL>
</DD>
<DD><DL>

<DT>Returns:<DD>a set view of the mappings contained in this map. 包含在此Map中的属性名-值的集合视图。</DL>
</DD>
</DL>
<HR>

<A NAME="equals(java.lang.Object)"></A><H3>
equals</H3>
<PRE>
public boolean equals(<A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> o)</PRE>
<DL>
<DD>Compares the specified Attributes object with this Map for equality.
Returns true if the given object is also an instance of Attributes
and the two Attributes objects represent the same mappings.
将该指定Attributes对象和Map比较是否相同。如果给出的对象也是Attributes的实例，并且两个Attributes对象表示相同的映射，
返回true。

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../java/util/Map.html#equals(java.lang.Object)">equals</A></CODE> in interface <CODE><A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A></CODE><DT>Overrides:<DD><CODE><A HREF="../../../java/lang/Object.html#equals(java.lang.Object)">equals</A></CODE> in class <CODE><A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>o</CODE> - the Object to be compared 要比较的对象
<DT>Returns:<DD>true if the specified Object is equal to this Map 如果指定的对象和该Map相等，返回true。<DT>See Also:<DD><A HREF="../../../java/lang/Object.html#hashCode()"><CODE>Object.hashCode()</CODE></A>,
<A HREF="../../../java/util/Hashtable.html" title="class in java.util"><CODE>Hashtable</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="hashCode()"></A><H3>
hashCode</H3>
<PRE>
public int hashCode()</PRE>
<DL>
<DD>Returns the hash code value for this Map.
返回该Map的hash码值。

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../java/util/Map.html#hashCode()">hashCode</A></CODE> in interface <CODE><A HREF="../../../java/util/Map.html" title="interface in java.util">Map</A></CODE><DT>Overrides:<DD><CODE><A HREF="../../../java/lang/Object.html#hashCode()">hashCode</A></CODE> in class <CODE><A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A></CODE></DL>
</DD>
<DD><DL>

<DT>Returns:<DD>a hash code value for this object. 该对象的hash码值。<DT>See Also:<DD><A HREF="../../../java/lang/Object.html#equals(java.lang.Object)"><CODE>Object.equals(java.lang.Object)</CODE></A>,
<A HREF="../../../java/util/Hashtable.html" title="class in java.util"><CODE>Hashtable</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="clone()"></A><H3>
clone</H3>
<PRE>
public <A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A> clone()</PRE>
<DL>
<DD>Returns a copy of the Attributes, implemented as follows:
返回该Attributes的拷贝。按以下实现。
<pre>
public Object clone() { return new Attributes(this); }
</pre>
Since the attribute names and values are themselves immutable,
the Attributes returned can be safely modified without affecting
the original.
由于属性名和值本身不可变，所以返回的Attributes可以被安全修改而不影响原值。

<DD><DL>
<DT>Overrides:<DD><CODE><A HREF="../../../java/lang/Object.html#clone()">clone</A></CODE> in class <CODE><A HREF="../../../java/lang/Object.html" title="class in java.lang">Object</A></CODE></DL>
</DD>
<DD><DL>

<DT>Returns:<DD>a clone of this instance. 实例的拷贝。<DT>See Also:<DD><A HREF="../../../java/lang/Cloneable.html" title="interface in java.lang"><CODE>Cloneable</CODE></A></DL>
</DD>
</DL>

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