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 1.5.0_16) on Mon Oct 12 16:11:19 PDT 2009 --> 6<TITLE> 7Qualifier 8</TITLE> 9 10<META NAME="keywords" CONTENT="javax.inject.Qualifier class"> 11 12<LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"> 13 14<SCRIPT type="text/javascript"> 15function windowTitle() 16{ 17 parent.document.title="Qualifier"; 18} 19</SCRIPT> 20<NOSCRIPT> 21</NOSCRIPT> 22 23</HEAD> 24 25<BODY BGCOLOR="white" onload="windowTitle();"> 26 27 28<!-- ========= START OF TOP NAVBAR ======= --> 29<A NAME="navbar_top"><!-- --></A> 30<A HREF="#skip-navbar_top" title="Skip navigation links"></A> 31<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 32<TR> 33<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 34<A NAME="navbar_top_firstrow"><!-- --></A> 35<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 36 <TR ALIGN="center" VALIGN="top"> 37 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../javax/inject/package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 38 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 39 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 40 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 41 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 42 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 43 </TR> 44</TABLE> 45</TD> 46<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 47</EM> 48</TD> 49</TR> 50 51<TR> 52<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 53 <A HREF="../../javax/inject/Provider.html" title="interface in javax.inject"><B>PREV CLASS</B></A> 54 <A HREF="../../javax/inject/Scope.html" title="annotation in javax.inject"><B>NEXT CLASS</B></A></FONT></TD> 55<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 56 <A HREF="../../index.html?javax/inject/Qualifier.html" target="_top"><B>FRAMES</B></A> 57 <A HREF="Qualifier.html" target="_top"><B>NO FRAMES</B></A> 58 <SCRIPT type="text/javascript"> 59 <!-- 60 if(window==top) { 61 document.writeln('<A HREF="../../allclasses-noframe.html"><B>All Classes</B></A>'); 62 } 63 //--> 64</SCRIPT> 65<NOSCRIPT> 66 <A HREF="../../allclasses-noframe.html"><B>All Classes</B></A> 67</NOSCRIPT> 68 69 70</FONT></TD> 71</TR> 72<TR> 73<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 74 SUMMARY: REQUIRED | OPTIONAL</FONT></TD> 75<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 76DETAIL: ELEMENT</FONT></TD> 77</TR> 78</TABLE> 79<A NAME="skip-navbar_top"></A> 80<!-- ========= END OF TOP NAVBAR ========= --> 81 82<HR> 83<!-- ======== START OF CLASS DATA ======== --> 84<H2> 85<FONT SIZE="-1"> 86javax.inject</FONT> 87<BR> 88Annotation Type Qualifier</H2> 89<HR> 90<DL> 91<DT><PRE><FONT SIZE="-1">@Target(value=ANNOTATION_TYPE) 92@Retention(value=RUNTIME) 93@Documented 94</FONT>public @interface <B>Qualifier</B></DL> 95</PRE> 96 97<P> 98Identifies qualifier annotations. Anyone can define a new qualifier. A 99 qualifier annotation: 100 101 <ul> 102 <li>is annotated with <code>@Qualifier</code>, <code>@Retention(RUNTIME)</code>, 103 and typically <code>@Documented</code>.</li> 104 <li>can have attributes.</li> 105 <li>may be part of the public API, much like the dependency type, but 106 unlike implementation types which needn't be part of the public 107 API.</li> 108 <li>may have restricted usage if annotated with <code>@Target</code>. While 109 this specification covers applying qualifiers to fields and 110 parameters only, some injector configurations might use qualifier 111 annotations in other places (on methods or classes for example).</li> 112 </ul> 113 114 <p>For example: 115 116 <pre> 117 @java.lang.annotation.Documented 118 @java.lang.annotation.Retention(RUNTIME) 119 @javax.inject.Qualifier 120 public @interface Leather { 121 Color color() default Color.TAN; 122 public enum Color { RED, BLACK, TAN } 123 }</pre> 124<P> 125 126<P> 127<DL> 128<DT><B>See Also:</B><DD><A HREF="../../javax/inject/Named.html" title="annotation in javax.inject"><CODE>@Named</CODE></A></DL> 129 130<P> 131 132<P> 133<!-- ========= END OF CLASS DATA ========= --> 134<HR> 135 136 137<!-- ======= START OF BOTTOM NAVBAR ====== --> 138<A NAME="navbar_bottom"><!-- --></A> 139<A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> 140<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 141<TR> 142<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 143<A NAME="navbar_bottom_firstrow"><!-- --></A> 144<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 145 <TR ALIGN="center" VALIGN="top"> 146 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../javax/inject/package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 147 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 148 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 149 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 150 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 151 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 152 </TR> 153</TABLE> 154</TD> 155<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 156</EM> 157</TD> 158</TR> 159 160<TR> 161<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 162 <A HREF="../../javax/inject/Provider.html" title="interface in javax.inject"><B>PREV CLASS</B></A> 163 <A HREF="../../javax/inject/Scope.html" title="annotation in javax.inject"><B>NEXT CLASS</B></A></FONT></TD> 164<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 165 <A HREF="../../index.html?javax/inject/Qualifier.html" target="_top"><B>FRAMES</B></A> 166 <A HREF="Qualifier.html" target="_top"><B>NO FRAMES</B></A> 167 <SCRIPT type="text/javascript"> 168 <!-- 169 if(window==top) { 170 document.writeln('<A HREF="../../allclasses-noframe.html"><B>All Classes</B></A>'); 171 } 172 //--> 173</SCRIPT> 174<NOSCRIPT> 175 <A HREF="../../allclasses-noframe.html"><B>All Classes</B></A> 176</NOSCRIPT> 177 178 179</FONT></TD> 180</TR> 181<TR> 182<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 183 SUMMARY: REQUIRED | OPTIONAL</FONT></TD> 184<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 185DETAIL: ELEMENT</FONT></TD> 186</TR> 187</TABLE> 188<A NAME="skip-navbar_bottom"></A> 189<!-- ======== END OF BOTTOM NAVBAR ======= --> 190 191<HR> 192<font size='-1'>Copyright (C) 2009 <a href='http://code.google.com/p/atinject/'>The JSR-330 Expert Group</a>. Licensed under the <a href='http://www.apache.org/licenses/LICENSE-2.0'>Apache License</a>, Version 2.0.</font> 193</BODY> 194</HTML> 195