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> 7 FinalizableWeakReference (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"> 15 function 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"> 81 DETAIL: 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"> 91 com.google.common.base</FONT> 92 <BR> 93 Class 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> 109 Weak 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> 194 FinalizableWeakReference</H3> 195 <PRE> 196 protected <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 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