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91org.apache.hadoop.util</FONT>
92<BR>
93Class GenericsUtil</H2>
94<PRE>
95<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
96  <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.util.GenericsUtil</B>
97</PRE>
98<HR>
99<DL>
100<DT><PRE>public class <B>GenericsUtil</B><DT>extends <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL>
101</PRE>
102
103<P>
104Contains utility methods for dealing with Java Generics.
105<P>
106
107<P>
108<HR>
109
110<P>
111
112<!-- ======== CONSTRUCTOR SUMMARY ======== -->
113
114<A NAME="constructor_summary"><!-- --></A>
115<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
116<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
117<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
118<B>Constructor Summary</B></FONT></TH>
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120<TR BGCOLOR="white" CLASS="TableRowColor">
121<TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/GenericsUtil.html#GenericsUtil()">GenericsUtil</A></B>()</CODE>
122
123<BR>
124&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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126</TABLE>
127&nbsp;
128<!-- ========== METHOD SUMMARY =========== -->
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134<B>Method Summary</B></FONT></TH>
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138<CODE>static
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143</TR>
144</TABLE>
145</CODE></FONT></TD>
146<TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/GenericsUtil.html#getClass(T)">getClass</A></B>(T&nbsp;t)</CODE>
147
148<BR>
149&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the Class object (of type <code>Class&lt;T&gt;</code>) of the 
150 argument of type <code>T</code>.</TD>
151</TR>
152<TR BGCOLOR="white" CLASS="TableRowColor">
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154<CODE>static
155<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
156<TR ALIGN="right" VALIGN="">
157<TD NOWRAP><FONT SIZE="-1">
158<CODE>&lt;T&gt; T[]</CODE></FONT></TD>
159</TR>
160</TABLE>
161</CODE></FONT></TD>
162<TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/GenericsUtil.html#toArray(java.lang.Class, java.util.List)">toArray</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A>&lt;T&gt;&nbsp;c,
163        <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;T&gt;&nbsp;list)</CODE>
164
165<BR>
166&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Converts the given <code>List&lt;T&gt;</code> to a an array of
167 <code>T[]</code>.</TD>
168</TR>
169<TR BGCOLOR="white" CLASS="TableRowColor">
170<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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178</CODE></FONT></TD>
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180
181<BR>
182&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Converts the given <code>List&lt;T&gt;</code> to a an array of
183 <code>T[]</code>.</TD>
184</TR>
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196<P>
197
198<!-- ========= CONSTRUCTOR DETAIL ======== -->
199
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204<B>Constructor Detail</B></FONT></TH>
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207
208<A NAME="GenericsUtil()"><!-- --></A><H3>
209GenericsUtil</H3>
210<PRE>
211public <B>GenericsUtil</B>()</PRE>
212<DL>
213</DL>
214
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224
225<A NAME="getClass(java.lang.Object)"><!-- --></A><A NAME="getClass(T)"><!-- --></A><H3>
226getClass</H3>
227<PRE>
228public static &lt;T&gt; <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A>&lt;T&gt; <B>getClass</B>(T&nbsp;t)</PRE>
229<DL>
230<DD>Returns the Class object (of type <code>Class&lt;T&gt;</code>) of the 
231 argument of type <code>T</code>.
232<P>
233<DD><DL>
234<DT><B>Type Parameters:</B><DD><CODE>T</CODE> - The type of the argument<DT><B>Parameters:</B><DD><CODE>t</CODE> - the object to get it class
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239
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241toArray</H3>
242<PRE>
243public static &lt;T&gt; T[] <B>toArray</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A>&lt;T&gt;&nbsp;c,
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245<DL>
246<DD>Converts the given <code>List&lt;T&gt;</code> to a an array of
247 <code>T[]</code>.
248<P>
249<DD><DL>
250<DT><B>Parameters:</B><DD><CODE>c</CODE> - the Class object of the items in the list<DD><CODE>list</CODE> - the list to convert</DL>
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257<PRE>
258public static &lt;T&gt; T[] <B>toArray</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;T&gt;&nbsp;list)</PRE>
259<DL>
260<DD>Converts the given <code>List&lt;T&gt;</code> to a an array of
261 <code>T[]</code>.
262<P>
263<DD><DL>
264<DT><B>Parameters:</B><DD><CODE>list</CODE> - the list to convert
265<DT><B>Throws:</B>
266<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/ArrayIndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">ArrayIndexOutOfBoundsException</A></CODE> - if the list is empty.
267 Use <A HREF="../../../../org/apache/hadoop/util/GenericsUtil.html#toArray(java.lang.Class, java.util.List)"><CODE>toArray(Class, List)</CODE></A> if the list may be empty.</DL>
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