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POJAVA: Type mismatch: cannot convert from Collection<Set<IConnection>> to Iterator<IConnection>
 

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  1. POJAVA: Type mismatch: cannot convert from Collection<Set<IConnection>> to Iterator<IConnection>
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    <p>I have a Problem here using Java in Red5 0.9 Server here's the code</p> <pre><code>package com.hwakin.i5lc.manager; import java.util.Iterator; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.red5.server.adapter.ApplicationAdapter; import org.red5.server.api.IClient; import org.red5.server.api.IConnection; import org.red5.server.api.IScope; import org.red5.server.api.Red5; import org.red5.server.api.service.IServiceCapableConnection; import com.hwakin.i5l.vo.ExternalPoint; import com.hwakin.i5l.vo.UserInfo; import com.hwakin.i5lc.vo.ExternalDrawInfo; public class I5lcDrawManager extends ApplicationAdapter { protected static Log log = LogFactory.getLog(I5lcDrawManager.class.getName()); public void startDrawingHandler(String type,ExternalPoint point, ExternalDrawInfo data){ try{ IConnection Lconn = Red5.getConnectionLocal(); IScope scope = Lconn.getScope(); Iterator&lt;IConnection&gt; it = scope.getConnections(); while (it.hasNext()) { IConnection conn = it.next(); if (Lconn.equals(conn)) { continue; } log.info("i5lvDrawManagerReceiver.startDrawingHandler invoked."); IClient client = conn.getClient(); UserInfo userInfo =(UserInfo) client.getAttribute("userInfo"); if (conn instanceof IServiceCapableConnection) { if(userInfo.lectureInfo.sync.equals("true")){ ((IServiceCapableConnection) conn).invoke("invoke",new Object[]{"i5lvDrawManagerReceiver.startDrawingHandler",type,point,data}); } } } }catch(Exception e){ log.debug("Exception in noticeChattingTo Method:"+e); } } public void drawingHandler(String type,ExternalPoint point){ try{ IConnection Lconn = Red5.getConnectionLocal(); IScope scope = Lconn.getScope(); Iterator&lt;IConnection&gt; it = scope.getConnections(); while (it.hasNext()) { IConnection conn = it.next(); if (Lconn.equals(conn)) { continue; } log.info("i5lvDrawManagerReceiver.drawingHandler invoked."); IClient client = conn.getClient(); UserInfo userInfo =(UserInfo) client.getAttribute("userInfo"); if (conn instanceof IServiceCapableConnection) { if(userInfo.lectureInfo.sync.equals("true")){ ((IServiceCapableConnection) conn).invoke("invoke",new Object[]{"i5lvDrawManagerReceiver.drawingHandler",type,point}); } } } }catch(Exception e){ log.debug("Exception in noticeChattingTo Method:"+e); } } public void endDrawingHandler(String type,ExternalPoint point, ExternalDrawInfo data){ try{ IConnection Lconn = Red5.getConnectionLocal(); IScope scope = Lconn.getScope(); Iterator&lt;IConnection&gt; it = scope.getConnections(); while (it.hasNext()) { IConnection conn = it.next(); if (Lconn.equals(conn)) { continue; } log.info("i5lvDrawManagerReceiver.endDrawingHandler invoked."); IClient client = conn.getClient(); UserInfo userInfo =(UserInfo) client.getAttribute("userInfo"); if (conn instanceof IServiceCapableConnection) { if(userInfo.lectureInfo.sync.equals("true")){ ((IServiceCapableConnection) conn).invoke("invoke",new Object[]{"i5lvDrawManagerReceiver.endDrawingHandler",type,point,data}); } } } }catch(Exception e){ log.debug("Exception in noticeChattingTo Method:"+e); } } } </code></pre> <p>The Errors are:</p> <ol> <li><p>ERROR in /opt/red5/dist/webapps/i5lecture/WEB-INF/src/com/hwakin/i5lc/manager/I5lcDrawManager.java (at line 29)</p> <pre><code>Iterator &lt;IConnection&gt; it = scope.getConnections(); </code></pre></li> </ol> <h2>Type mismatch: cannot convert from Collection&lt;Set&lt;IConnection>> to Iterator</h2> <ol start="2"> <li><p>ERROR in /opt/red5/dist/webapps/i5lecture/WEB-INF/src/com/hwakin/i5lc/manager/I5lcDrawManager.java (at line 63)</p> <pre><code>Iterator&lt;IConnection&gt; it = scope.getConnections(); </code></pre></li> </ol> <h2>Type mismatch: cannot convert from Collection&lt;Set&lt;IConnection>> to Iterator&lt;IConnection></h2> <ol start="3"> <li><p>ERROR in /opt/red5/dist/webapps/i5lecture/WEB-INF/src/com/hwakin/i5lc/manager/I5lcDrawManager.java (at line 100)</p> <pre><code>Iterator&lt;IConnection&gt; it = scope.getConnections(); </code></pre></li> </ol> <h2>Type mismatch: cannot convert from Collection&lt;Set&lt;IConnection>> to Iterator&lt;IConnection></h2> <p>3 problems (3 errors)</p>
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