锘??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#36229;&#30896;&#57;&#55;&#22312;&#32447;&#20813;&#36153;&#35266;&#30475;&#44;&#22269;&#20869;&#20599;&#33258;&#35270;&#39057;&#21306;&#35270;&#39057;&#32508;&#21512;&#44;&#27431;&#32654;&#19968;&#21306;&#20108;&#21306;&#19977;&#21306;&#19981;&#21345;</title><link>http://www.aygfsteel.com/yuyee/</link><description /><language>zh-cn</language><lastBuildDate>Wed, 18 Jun 2025 14:49:17 GMT</lastBuildDate><pubDate>Wed, 18 Jun 2025 14:49:17 GMT</pubDate><ttl>60</ttl><item><title>PriorityBlockingQueue</title><link>http://www.aygfsteel.com/yuyee/archive/2010/11/01/336701.html</link><dc:creator>緹旂緤</dc:creator><author>緹旂緤</author><pubDate>Mon, 01 Nov 2010 08:33:00 GMT</pubDate><guid>http://www.aygfsteel.com/yuyee/archive/2010/11/01/336701.html</guid><wfw:comment>http://www.aygfsteel.com/yuyee/comments/336701.html</wfw:comment><comments>http://www.aygfsteel.com/yuyee/archive/2010/11/01/336701.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/yuyee/comments/commentRss/336701.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/yuyee/services/trackbacks/336701.html</trackback:ping><description><![CDATA[PriorityBlockingQueue錛氫竴涓棤鐣岀殑<a title="java.util.concurrent 涓殑鎺ュ彛" href="">闃誨闃熷垪</a>錛屽畠浣跨敤涓庣被 <a title="java.util 涓殑綾? href=""><code>PriorityQueue</code></a>
鐩稿悓鐨勯『搴忚鍒欙紝騫朵笖鎻愪緵浜嗛樆濉炴绱㈢殑鎿嶄綔銆傝櫧鐒舵闃熷垪閫昏緫涓婃槸鏃犵晫鐨勶紝浣嗘槸鐢變簬璧勬簮琚�楀敖錛屾墍浠ヨ瘯鍥炬墽琛屾坊鍔犳搷浣滃彲鑳戒細澶辮觸錛堝鑷?
<tt>OutOfMemoryError</tt>錛夈�傛綾諱笉鍏佽浣跨敤 <tt>null</tt>
鍏冪礌銆備緷璧栬嚜鐒墮『搴忕殑浼樺厛綰ч槦鍒椾篃涓嶅厑璁告彃鍏ヤ笉鍙瘮杈冪殑瀵硅薄錛堝洜涓鴻繖鏍峰仛浼氭姏鍑?<tt>ClassCastException</tt>錛夈�?
<p>&nbsp;<code><strong><a href="">PriorityBlockingQueue</a></strong>()</code> </p>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;鐢ㄩ粯璁ょ殑鍒濆瀹歸噺 (11) 鍒涘緩涓�涓?
<tt>PriorityBlockingQueue</tt>錛屽茍鏍規嵁鍏冪礌鐨勮嚜鐒墮『搴忔帓搴忓叾鍏冪礌錛堜嬌鐢?
<tt>Comparable</tt>錛夈�?
<code><strong><a href="">PriorityBlockingQueue</a></strong>(<a title="java.util 涓殑鎺ュ彛" href="">Collection</a>&lt;? extends <a title="PriorityBlockingQueue 涓殑綾誨瀷鍙傛暟" href="">E</a>&gt;&nbsp;c)</code>
<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;鍒涘緩涓�涓寘鍚寚瀹氶泦鍚堜腑鍏冪礌鐨?<tt>PriorityBlockingQueue</tt>銆?
<code><strong><a href="">PriorityBlockingQueue</a></strong>(int&nbsp;initialCapacity)</code>
<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;浣跨敤鎸囧畾鐨勫垵濮嬪閲忓垱寤轟竴涓?<tt>PriorityBlockingQueue</tt>錛屽茍鏍規嵁鍏冪礌鐨勮嚜鐒墮『搴忔帓搴忓叾鍏冪礌錛堜嬌鐢?
<tt>Comparable</tt>錛夈�?
<code><strong><a href="">PriorityBlockingQueue</a></strong>(int&nbsp;initialCapacity,
<a title="java.util 涓殑鎺ュ彛" href="">Comparator</a>&lt;? super <a title="PriorityBlockingQueue 涓殑綾誨瀷鍙傛暟" href="">E</a>&gt;&nbsp;comparator)</code>
<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;浣跨敤鎸囧畾鐨勫垵濮嬪閲忓垱寤轟竴涓?<tt>PriorityBlockingQueue</tt>錛屽茍鏍規嵁鎸囧畾鐨勬瘮杈冨櫒鎺掑簭鍏跺厓绱犮�?
<div><br />
</div>
<div>姝ょ被姣忔offer鍏冪礌錛岄兘浼氭湁涓�涓猣ixup鎿嶄綔錛屼篃灝辨槸鎺掑簭錛屽鏋滄病鏈夋瀯閫犵殑鏃跺�欎紶鍏ヨ嚜宸卞疄鐜扮殑姣旇緝鍣紝灝遍噰鐢ㄨ嚜鐒舵帓搴忥紝鍚﹀垯閲囩敤姣旇緝鍣ㄨ鍒欙紝榪涜浜屽垎鏌ユ壘錛屾瘮杈冿紝淇濇寔鍒楀ご鏄瘮杈冨櫒甯屾湜鐨勯偅涓渶澶ф垨鍒欐渶灝忓厓绱犮�?/div>
<div>
<div>&nbsp;private void fixUp(int k) {</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp;if (comparator == null) {</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;while (k &gt; 1) {</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;int j = k &gt;&gt; 1;</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;if (((Comparable&lt;E&gt;)queue[j]).compareTo((E)queue[k]) &lt;= 0)</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;break;</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Object tmp = queue[j]; &nbsp;queue[j] = queue[k]; queue[k] = tmp;</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;k = j;</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp;} else {</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;while (k &gt; 1) {</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;int j = k &gt;&gt;&gt; 1;</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;if (comparator.compare((E)queue[j], (E)queue[k]) &lt;= 0)</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;break;</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Object tmp = queue[j]; &nbsp;queue[j] = queue[k]; queue[k] = tmp;</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;k = j;</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}</div>
<div>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp;}</div>
<div>&nbsp;&nbsp; &nbsp;}</div>
</div>
<img src ="http://www.aygfsteel.com/yuyee/aggbug/336701.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/yuyee/" target="_blank">緹旂緤</a> 2010-11-01 16:33 <a href="http://www.aygfsteel.com/yuyee/archive/2010/11/01/336701.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>OSGI灝忚</title><link>http://www.aygfsteel.com/yuyee/archive/2010/10/26/336202.html</link><dc:creator>緹旂緤</dc:creator><author>緹旂緤</author><pubDate>Tue, 26 Oct 2010 09:28:00 GMT</pubDate><guid>http://www.aygfsteel.com/yuyee/archive/2010/10/26/336202.html</guid><description><![CDATA[鍓嶅嚑涓漢鍥犱負欏圭洰涓�冭檻浣跨敤OSGI鏉ュ紑鍙戯紝鍥犳鍜屽悓浜嬭皟鐮斾簡澶ф1涓鏈堬紝褰撴椂娌″仛璁板綍錛岀幇鍦ㄦ潵寮ヨˉ涓?
<div>OSIG錛屼竴涓瀯浠舵ā鍧楀寲錛屽姩鎬佸寲緋葷粺鐨勬爣鍑嗭紝浼楀搴旂敤鏈嶅姟鍣ㄥ疄鐜板井鏍擱噰鐢ㄧ殑鎶�鏈紝濡倃eblogic,glassfish,鏈�鍑哄悕鐨勬槸equinox,eclipse鏍稿績銆?/div>
<div>鍦∣SGI鐜涓紝浣撶幇妯″潡鍖栵紝鍔ㄦ�佸寲錛?/div>
<div>妯″潡鍖栵細妯″潡涔嬮棿鐙珛錛岄儴棣栧叾浠栨ā鍧楀獎鍝嶃�?/div>
<div>鍏朵粬妯″潡鍙兘璁塊棶璇ユā鍧楀澶栨彁渚涚殑鏈嶅姟</div>
<div>妯″潡鍏峰鐙珛鐨勭敓鍛藉懆鏈燂紝濡傚惎鍔紝鍋滄錛屾洿鏂?/div>
<div>鍔ㄦ�佸寲錛?/div>
<div>瀵逛簬妯″潡鐨勫鍔狅紝淇敼錛屽垹闄わ紝涓嶉渶瑕佸仛 棰濆鐨勫鐞嗐�?/div>
<div>OSGI涓紝姣忎釜妯″潡灝辨槸鍦ㄧ墿鐞嗕笂灝辨槸涓�涓猙undle,涓�涓狫AR鍖咃紝鏄疧SGI閮ㄧ講鐨勬渶灝忓崟浣嶏紝闇�瑕佸湪姣忎釜JAR鍖呯殑MANIFEST.MF涓粰榪欎釜bundle鏍囪瘑錛岃薄bundle-name,Bundle-SymbolicName,Bundle-ClassPath,Bundle-Activator;</div>
<div>OSGI涓璪undle鐨勯殧紱繪槸閫氳繃java ClassLoader闅旂鎬ф潵瀹屾垚鐨勶紝JAVA涓瘡涓猚lassloader絀洪棿閮芥槸闅旂鐨勶紝榛樿鐨刢lassloader鏈塨ootStrap ClassLoader(jre/lib,jre/classes) extension classloader(jre/lib/ext),system classloader(-classpath),涓�鑸琽sgi妗嗘灦榪樺疄鐜拌嚜宸辯殑搴旂敤綾誨姞杞藉櫒銆?/div>
<div>bundle闅旂鏈哄埗瀹炵幇錛氭瘡涓猙undle閮芥湁涓�涓嫭绔嬬殑classloader,閫氳繃bundle-classpath鎸囧畾JAR璺緞</div>
<div>java涓�氳繃鍙屼翰濮旀墭鏉ュ姞杞界被錛屽鎵劇被棣栧厛鏄粠parent classloader涓鎵撅紝濡傛灉鎵句笉鍒版墠鍦ㄥ綋鍓嶇殑clasloader涓鎵?/div>
<div>bundle綾誨姞杞借繃紼嬶細</div>
<div>java.*寮�澶寸殑綾誨媧劇粰parent classloader鍔犺澆錛?/div>
<div>bootdelegationcan鍙傛暟涓厤緗殑涔熷媧劇粰parent classloader鍔犺澆錛宲arent classloader鎵句笉鍒板垯緇х畫涓嬮潰鐨勬搷浣滐紱</div>
<div>鏄惁鍦╥mport-Package涓紝鍦ㄥ垯濮旀淳緇欏鍑轟粬鐨刡undle鐨刢lassloader 鍔犺澆錛屼笉鍦ㄥ垯緇х畫涓嬮潰</div>
<div>鏄惁鍦╮equire-bundle涓紝鍦ㄥ垯濮旀淳緇欑浉搴旂殑bundleloader鍔犺澆錛屼笉鍦ㄧ戶緇笅闈㈢殑</div>
<div>鏄惁鍦ㄨ嚜宸辯殑bundle-classpath 涓紝涓嶅湪鍒欑戶緇笅闈㈢殑</div>
<div>鏄惁鍦╢ragmentsbundle鐨刢lasspath涓鎵撅紝涓嶅湪鍒欑戶緇笅闈㈢殑(<span style="font-family: arial, nsimsun, sans-serif; font-size: 12px; "><span style="font-family: arial, nsimsun, sans-serif; font-size: 12px; ">&nbsp;</span></span><span style="font-family: arial, nsimsun, sans-serif; font-size: 12px; ">鍦?OSGi 妗嗘灦涓彁渚涗簡涓�縐嶇О涓?fragment 鐨勭壒孌?bundle銆傚湪瑁呰澆鐨勮繃紼嬩腑錛岃繖綾?fragment 鏄闄勫姞鍒拌縐頒負&#8220;瀹夸富&#8221;鐨?bundle 涓婏紝鏈�鍚庝綔涓轟竴涓暣浣?bundle 榪愯浜?OSGi 鐜涓�傛渶涓哄吀鍨嬬殑 fragment 搴旂敤鍦烘櫙鏄璇█鍖呭彂甯冿紝灝嗗寘鍚璇█鍖呯殑 bundle 浣滀負涓諱綋紼嬪簭 bundle 鐨?fragment錛岃繖鏍峰彲浠ュ皢澶氳璦�鍖呭拰涓諱綋 bundle 浣滀負涓や釜鐙珛鐨勯儴鍒嗘潵鍙戝竷錛屼絾鍦ㄨ繍琛屾椂瀹冧滑鍙堟槸涓�涓暣浣撱�?/span>)</div>
<div>鏄惁鍦╡xport-package涓紝涓嶅湪緇х畫涓嬮潰鐨?/div>
<div>鏄惁鍦╠ynamicimport-package涓紝鍦ㄥ垯鍔犺澆錛屼笉鍦ㄥ垯鎶沜lassNotfoundexception</div>
<div>閫氳繃MANIFEST.MF瀹氫箟import-package絳夛紝褰撹娉ㄦ剰錛屾渶濂藉畾涔夊寘鐨勭増鏈?濡傦細Import-Package: org.eclipse.osgi.framework.console;version="1.0.0",</div>
<div>&nbsp;org.osgi.framework;version="1.3.0"</div>
<div>Import-Package瀵繪壘鏈哄埗錛?/div>
<div>resolved鐨勪紭鍏堟湭resolved</div>
<div>鐗堟湰楂樼殑浼樺厛鐗堟湰浣庣殑錛屽鏋滅増鏈竴鏍鳳紝鍒欐瘮杈僢undle id,灝忕殑浼樺厛錛屼篃灝辨槸鍏堝畨瑁呯殑bundle浼樺厛</div>
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