1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<!--NewPage--> 3<HTML> 4<HEAD> 5<!-- Generated by javadoc (build 1.6.0-google-internal) on Mon Jan 04 20:47:56 PST 2010 --> 6<TITLE> 7FinalizableWeakReference (Guava Libraries 2010.01.04) 8</TITLE> 9 10<META NAME="date" CONTENT="2010-01-04"> 11 12<LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"> 13 14<SCRIPT type="text/javascript"> 15function windowTitle() 16{ 17 if (location.href.indexOf('is-external=true') == -1) { 18 parent.document.title="FinalizableWeakReference (Guava Libraries 2010.01.04)"; 19 } 20} 21</SCRIPT> 22<NOSCRIPT> 23</NOSCRIPT> 24 25</HEAD> 26 27<BODY BGCOLOR="white" onload="windowTitle();"> 28<HR> 29 30 31<!-- ========= START OF TOP NAVBAR ======= --> 32<A NAME="navbar_top"><!-- --></A> 33<A HREF="#skip-navbar_top" title="Skip navigation links"></A> 34<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 35<TR> 36<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 37<A NAME="navbar_top_firstrow"><!-- --></A> 38<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 39 <TR ALIGN="center" VALIGN="top"> 40 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> 41 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 42 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 43 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/FinalizableWeakReference.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> 44 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 45 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 46 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 47 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 48 </TR> 49</TABLE> 50</TD> 51<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 52</EM> 53</TD> 54</TR> 55 56<TR> 57<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 58 <A HREF="../../../../com/google/common/base/FinalizableSoftReference.html" title="class in com.google.common.base"><B>PREV CLASS</B></A> 59 <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base"><B>NEXT CLASS</B></A></FONT></TD> 60<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 61 <A HREF="../../../../index.html?com/google/common/base/FinalizableWeakReference.html" target="_top"><B>FRAMES</B></A> 62 <A HREF="FinalizableWeakReference.html" target="_top"><B>NO FRAMES</B></A> 63 <SCRIPT type="text/javascript"> 64 <!-- 65 if(window==top) { 66 document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); 67 } 68 //--> 69</SCRIPT> 70<NOSCRIPT> 71 <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A> 72</NOSCRIPT> 73 74 75</FONT></TD> 76</TR> 77<TR> 78<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 79 SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#methods_inherited_from_class_java.lang.ref.Reference">METHOD</A></FONT></TD> 80<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 81DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | METHOD</FONT></TD> 82</TR> 83</TABLE> 84<A NAME="skip-navbar_top"></A> 85<!-- ========= END OF TOP NAVBAR ========= --> 86 87<HR> 88<!-- ======== START OF CLASS DATA ======== --> 89<H2> 90<FONT SIZE="-1"> 91com.google.common.base</FONT> 92<BR> 93Class FinalizableWeakReference<T></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 "><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/ref/Reference.html?is-external=true" title="class or interface in java.lang.ref">java.lang.ref.Reference</A><T> 97 <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/ref/WeakReference.html?is-external=true" title="class or interface in java.lang.ref">java.lang.ref.WeakReference</A><T> 98 <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.google.common.base.FinalizableWeakReference<T></B> 99</PRE> 100<DL> 101<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../com/google/common/base/FinalizableReference.html" title="interface in com.google.common.base">FinalizableReference</A></DD> 102</DL> 103<HR> 104<DL> 105<DT><PRE>public abstract class <B>FinalizableWeakReference<T></B><DT>extends <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/ref/WeakReference.html?is-external=true" title="class or interface in java.lang.ref">WeakReference</A><T><DT>implements <A HREF="../../../../com/google/common/base/FinalizableReference.html" title="interface in com.google.common.base">FinalizableReference</A></DL> 106</PRE> 107 108<P> 109Weak reference with a <code>finalizeReferent()</code> method which a background 110 thread invokes after the garbage collector reclaims the referent. This is a 111 simpler alternative to using a <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/ref/ReferenceQueue.html?is-external=true" title="class or interface in java.lang.ref"><CODE>ReferenceQueue</CODE></A>. 112<P> 113 114<P> 115<DL> 116<DT><B>Since:</B></DT> 117 <DD>2010.01.04 <b>stable</b> (imported from Google Collections Library)</DD> 118<DT><B>Author:</B></DT> 119 <DD>Bob Lee</DD> 120</DL> 121<HR> 122 123<P> 124 125<!-- ======== CONSTRUCTOR SUMMARY ======== --> 126 127<A NAME="constructor_summary"><!-- --></A> 128<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 129<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 130<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> 131<B>Constructor Summary</B></FONT></TH> 132</TR> 133<TR BGCOLOR="white" CLASS="TableRowColor"> 134<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 135<CODE>protected </CODE></FONT></TD> 136<TD><CODE><B><A HREF="../../../../com/google/common/base/FinalizableWeakReference.html#FinalizableWeakReference(T, com.google.common.base.FinalizableReferenceQueue)">FinalizableWeakReference</A></B>(<A HREF="../../../../com/google/common/base/FinalizableWeakReference.html" title="type parameter in FinalizableWeakReference">T</A> referent, 137 <A HREF="../../../../com/google/common/base/FinalizableReferenceQueue.html" title="class in com.google.common.base">FinalizableReferenceQueue</A> queue)</CODE> 138 139<BR> 140 Constructs a new finalizable weak reference.</TD> 141</TR> 142</TABLE> 143 144<!-- ========== METHOD SUMMARY =========== --> 145 146<A NAME="method_summary"><!-- --></A> 147<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 148<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 149<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> 150<B>Method Summary</B></FONT></TH> 151</TR> 152</TABLE> 153 <A NAME="methods_inherited_from_class_java.lang.ref.Reference"><!-- --></A> 154<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 155<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> 156<TH ALIGN="left"><B>Methods inherited from class java.lang.ref.<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/ref/Reference.html?is-external=true" title="class or interface in java.lang.ref">Reference</A></B></TH> 157</TR> 158<TR BGCOLOR="white" CLASS="TableRowColor"> 159<TD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/ref/Reference.html?is-external=true#clear()" title="class or interface in java.lang.ref">clear</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/ref/Reference.html?is-external=true#enqueue()" title="class or interface in java.lang.ref">enqueue</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/ref/Reference.html?is-external=true#get()" title="class or interface in java.lang.ref">get</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/ref/Reference.html?is-external=true#isEnqueued()" title="class or interface in java.lang.ref">isEnqueued</A></CODE></TD> 160</TR> 161</TABLE> 162 <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> 163<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 164<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> 165<TH ALIGN="left"><B>Methods inherited from class java.lang.<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></B></TH> 166</TR> 167<TR BGCOLOR="white" CLASS="TableRowColor"> 168<TD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD> 169</TR> 170</TABLE> 171 <A NAME="methods_inherited_from_class_com.google.common.base.FinalizableReference"><!-- --></A> 172<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 173<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> 174<TH ALIGN="left"><B>Methods inherited from interface com.google.common.base.<A HREF="../../../../com/google/common/base/FinalizableReference.html" title="interface in com.google.common.base">FinalizableReference</A></B></TH> 175</TR> 176<TR BGCOLOR="white" CLASS="TableRowColor"> 177<TD><CODE><A HREF="../../../../com/google/common/base/FinalizableReference.html#finalizeReferent()">finalizeReferent</A></CODE></TD> 178</TR> 179</TABLE> 180 181<P> 182 183<!-- ========= CONSTRUCTOR DETAIL ======== --> 184 185<A NAME="constructor_detail"><!-- --></A> 186<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 187<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 188<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> 189<B>Constructor Detail</B></FONT></TH> 190</TR> 191</TABLE> 192 193<A NAME="FinalizableWeakReference(java.lang.Object,com.google.common.base.FinalizableReferenceQueue)"><!-- --></A><A NAME="FinalizableWeakReference(T, com.google.common.base.FinalizableReferenceQueue)"><!-- --></A><H3> 194FinalizableWeakReference</H3> 195<PRE> 196protected <B>FinalizableWeakReference</B>(<A HREF="../../../../com/google/common/base/FinalizableWeakReference.html" title="type parameter in FinalizableWeakReference">T</A> referent, 197 <A HREF="../../../../com/google/common/base/FinalizableReferenceQueue.html" title="class in com.google.common.base">FinalizableReferenceQueue</A> queue)</PRE> 198<DL> 199<DD>Constructs a new finalizable weak reference. 200<P> 201<DL> 202<DT><B>Parameters:</B><DD><CODE>referent</CODE> - to weakly reference<DD><CODE>queue</CODE> - that should finalize the referent</DL> 203</DL> 204<!-- ========= END OF CLASS DATA ========= --> 205<HR> 206 207 208<!-- ======= START OF BOTTOM NAVBAR ====== --> 209<A NAME="navbar_bottom"><!-- --></A> 210<A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> 211<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 212<TR> 213<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 214<A NAME="navbar_bottom_firstrow"><!-- --></A> 215<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 216 <TR ALIGN="center" VALIGN="top"> 217 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> 218 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 219 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 220 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/FinalizableWeakReference.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> 221 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 222 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 223 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 224 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 225 </TR> 226</TABLE> 227</TD> 228<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 229</EM> 230</TD> 231</TR> 232 233<TR> 234<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 235 <A HREF="../../../../com/google/common/base/FinalizableSoftReference.html" title="class in com.google.common.base"><B>PREV CLASS</B></A> 236 <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base"><B>NEXT CLASS</B></A></FONT></TD> 237<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 238 <A HREF="../../../../index.html?com/google/common/base/FinalizableWeakReference.html" target="_top"><B>FRAMES</B></A> 239 <A HREF="FinalizableWeakReference.html" target="_top"><B>NO FRAMES</B></A> 240 <SCRIPT type="text/javascript"> 241 <!-- 242 if(window==top) { 243 document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); 244 } 245 //--> 246</SCRIPT> 247<NOSCRIPT> 248 <A HREF="../../../../allclasses-noframe.html"><B>All 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