What's C# ?,Java, C ,C++, ASP, ASP.net C# ,Struts ,Questions & Answer, Struts2, Ajax, Hibernate, Swing ,JSP , Servlet, J2EE ,Core Java ,Stping, VC++, HTML, DHTML, JAVASCRIPT, VB ,CSS, interview ,questions, and answers, for,experienced, and fresher
What's C# ?

C# (pronounced C-sharp) is a new object oriented language from Microsoft and is derived from C and C++. It also borrows a lot of concepts from Java too including garbage collection. 

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HTTP Status 500 - -------------------------------------------------------------------------------- type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception org.apache.jasper.JasperException: Unable to compile class for JSP org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:97) org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:346) org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:414) org.apache.jasper.compiler.Compiler.compile(Compiler.java:472) org.apache.jasper.compiler.Compiler.compile(Compiler.java:451) org.apache.jasper.compiler.Compiler.compile(Compiler.java:439) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) root cause Unable to find a javac compiler; com.sun.tools.javac.Main is not on the classpath. Perhaps JAVA_HOME does not point to the JDK org.apache.tools.ant.taskdefs.compilers.CompilerAdapterFactory.getCompiler(CompilerAdapterFactory.java:106) org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:935) org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:764) org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:382) org.apache.jasper.compiler.Compiler.compile(Compiler.java:472) org.apache.jasper.compiler.Compiler.compile(Compiler.java:451) org.apache.jasper.compiler.Compiler.compile(Compiler.java:439) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs. -------------------------------------------------------------------------------- Apache Tomcat/5.0.28
10 Aug, 2010 12:53:22 PM org.apache.jasper.compiler.Compiler generateClass SEVERE: Javac exception Unable to find a javac compiler; com.sun.tools.javac.Main is not on the classpath. Perhaps JAVA_HOME does not point to the JDK at org.apache.tools.ant.taskdefs.compilers.CompilerAdapterFactory.getCompiler(CompilerAdapterFactory.java:106) at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:935) at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:764) at org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:382) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:472) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:451) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:439) at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929) at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683) at java.lang.Thread.run(Unknown Source) 10 Aug, 2010 12:53:22 PM org.apache.jasper.compiler.Compiler generateClass SEVERE: Env: Compile: javaFileName=/C:/greentree/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/work/Catalina/localhost/uvc//org/apache/jsp\uvaluecalculator_jsp.java classpath=/C:/greentree/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/uvc/WEB-INF/classes/;C:\greentree\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\work\Catalina\localhost\uvc;/C:/greentree/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/uvc/WEB-INF/classes/;C:/Program Files/Apache Software Foundation/Tomcat 5.0/common/classes/;C:/Program Files/Apache Software Foundation/Tomcat 5.0/common/lib/ant-launcher.jar;C:/Program Files/Apache Software Foundation/Tomcat 5.0/common/lib/ant.jar;C:/Program Files/Apache Software Foundation/Tomcat 5.0/common/lib/commons-collections-3.1.jar;C:/Program Files/Apache Software Foundation/Tomcat 5.0/common/lib/commons-dbcp-1.2.1.jar;C:/Program Files/Apache Software Foundation/Tomcat 5.0/common/lib/commons-el.jar;C:/Program Files/Apache Software Foundation/Tomcat 5.0/common/lib/commons-pool-1.2.jar;C:/Program Files/Apache Software Foundation/Tomcat 5.0/common/lib/jasper-compiler.jar;C:/Program Files/Apache Software Foundation/Tomcat 5.0/common/lib/jasper-runtime.jar;C:/Program Files/Apache Software Foundation/Tomcat 5.0/common/lib/jsp-api.jar;C:/Program Files/Apache Software Foundation/Tomcat 5.0/common/lib/naming-common.jar;C:/Program Files/Apache Software Foundation/Tomcat 5.0/common/lib/naming-factory.jar;C:/Program Files/Apache Software Foundation/Tomcat 5.0/common/lib/naming-java.jar;C:/Program Files/Apache Software Foundation/Tomcat 5.0/common/lib/naming-resources.jar;C:/Program Files/Apache Software Foundation/Tomcat 5.0/common/lib/servlet-api.jar;/C:/Program%20Files/Apache%20Software%20Foundation/Tomcat%205.0/bin/bootstrap.jar;/C:/Program%20Files/Java/jre1.6.0_05/lib/ext/dnsns.jar;/C:/Program%20Files/Java/jre1.6.0_05/lib/ext/localedata.jar;/C:/Program%20Files/Java/jre1.6.0_05/lib/ext/sunjce_provider.jar;/C:/Program%20Files/Java/jre1.6.0_05/lib/ext/sunmscapi.jar;/C:/Program%20Files/Java/jre1.6.0_05/lib/ext/sunpkcs11.jar cp=C:\Program Files\Apache Software Foundation\Tomcat 5.0\bin\bootstrap.jar cp=C:\greentree\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\uvc\WEB-INF\classes cp=C:\greentree\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\work\Catalina\localhost\uvc cp=C:\greentree\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\uvc\WEB-INF\classes cp=C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\classes cp=C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\ant-launcher.jar cp=C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\ant.jar cp=C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\commons-collections-3.1.jar cp=C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\commons-dbcp-1.2.1.jar cp=C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\commons-el.jar cp=C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\commons-pool-1.2.jar cp=C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\jasper-compiler.jar cp=C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\jasper-runtime.jar cp=C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\jsp-api.jar cp=C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\naming-common.jar cp=C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\naming-factory.jar cp=C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\naming-java.jar cp=C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\naming-resources.jar cp=C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\servlet-api.jar cp=C:\Program%20Files\Apache%20Software%20Foundation\Tomcat%205.0\bin\bootstrap.jar cp=C:\Program%20Files\Java\jre1.6.0_05\lib\ext\dnsns.jar cp=C:\Program%20Files\Java\jre1.6.0_05\lib\ext\localedata.jar cp=C:\Program%20Files\Java\jre1.6.0_05\lib\ext\sunjce_provider.jar cp=C:\Program%20Files\Java\jre1.6.0_05\lib\ext\sunmscapi.jar cp=C:\Program%20Files\Java\jre1.6.0_05\lib\ext\sunpkcs11.jar work dir=C:\greentree\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\work\Catalina\localhost\uvc extension dir=C:\Program Files\Java\jre1.6.0_05\lib\ext;C:\Windows\Sun\Java\lib\ext srcDir=C:\greentree\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\work\Catalina\localhost\uvc include=org/apache/jsp/uvaluecalculator_jsp.java 10 Aug, 2010 12:53:22 PM org.apache.jasper.compiler.Compiler generateClass SEVERE: Error compiling file: /C:/greentree/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/work/Catalina/localhost/uvc//org/apache/jsp\uvaluecalculator_jsp.java [javac] Compiling 1 source file
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Question:-What’s a delegate?
Question:-What’s a multicast delegate?
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What's C# ?
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ASP.net Versions ?
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Difference between Cookies and Session in Asp.Net ?
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