05-Feb-2025 13:18:08.986 SEVERE [http-nio-8080-exec-7] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [jsp] in context with path [/clover_portal] threw exception [Unable to compile class for JSP:
An error occurred at line: [24] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [26] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [28] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [31] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
'<>' operator is not allowed for source level below 1.7
An error occurred at line: [31] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Incorrect number of arguments for type LinkedHashSet<E>; it cannot be parameterized with arguments <>
An error occurred at line: [36] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
'<>' operator is not allowed for source level below 1.7
An error occurred at line: [36] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Incorrect number of arguments for type LinkedHashSet<E>; it cannot be parameterized with arguments <>
An error occurred at line: [43] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [47] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [51] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
Stacktrace:] with root cause
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: [24] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [26] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [28] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [31] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
'<>' operator is not allowed for source level below 1.7
An error occurred at line: [31] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Incorrect number of arguments for type LinkedHashSet<E>; it cannot be parameterized with arguments <>
An error occurred at line: [36] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
'<>' operator is not allowed for source level below 1.7
An error occurred at line: [36] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Incorrect number of arguments for type LinkedHashSet<E>; it cannot be parameterized with arguments <>
An error occurred at line: [43] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [47] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [51] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
Stacktrace:
at org.apache.jasperpiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:72)
at org.apache.jasperpiler.ErrorDispatcher.javacError(ErrorDispatcher.java:192)
at org.apache.jasperpiler.JDTCompiler.generateClass(JDTCompiler.java:542)
at org.apache.jasperpiler.Compilerpile(Compiler.java:371)
at org.apache.jasperpiler.Compilerpile(Compiler.java:343)
at org.apache.jasperpiler.Compilerpile(Compiler.java:329)
at org.apache.jasper.JspCompilationContextpile(JspCompilationContext.java:603)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:399)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:376)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:324)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:623)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:199)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:144)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:168)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:144)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:168)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:130)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:660)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:346)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:396)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:937)
at org.apache.tomcat.util.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791)
at org.apache.tomcat.util.SocketProcessorBase.run(SocketProcessorBase.java:52)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1190)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63)
at java.lang.Thread.run(Thread.java:748)
I tried changing configurations related to the JSP in the Tomcat's web.xml:
<servlet>
<servlet-name>jsp</servlet-name>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
<init-param>
<param-name>fork</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>xpoweredBy</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>compilerSourceVM</param-name>
<param-value>1.8</param-value>
</init-param>
<init-param>
<param-name>compilerTargetVM</param-name>
<param-value>1.8</param-value>
</init-param>
<load-on-startup>3</load-on-startup>
</servlet>
I modified the Tomcat configuration in the web.xml file by adding some parameters for the JSP. What I expected: I expected this configuration change to resolve the issue by forcing the JSP compiler to use Java 1.8, which should resolve the errors related to parameterized types and the < > operator in the JSP code.
What actually happened: Despite these changes, the issue persists and the error messages are still appearing, suggesting that the JSP compiler is not using the correct Java version for compilation
05-Feb-2025 13:18:08.986 SEVERE [http-nio-8080-exec-7] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [jsp] in context with path [/clover_portal] threw exception [Unable to compile class for JSP:
An error occurred at line: [24] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [26] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [28] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [31] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
'<>' operator is not allowed for source level below 1.7
An error occurred at line: [31] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Incorrect number of arguments for type LinkedHashSet<E>; it cannot be parameterized with arguments <>
An error occurred at line: [36] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
'<>' operator is not allowed for source level below 1.7
An error occurred at line: [36] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Incorrect number of arguments for type LinkedHashSet<E>; it cannot be parameterized with arguments <>
An error occurred at line: [43] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [47] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [51] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
Stacktrace:] with root cause
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: [24] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [26] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [28] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [31] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
'<>' operator is not allowed for source level below 1.7
An error occurred at line: [31] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Incorrect number of arguments for type LinkedHashSet<E>; it cannot be parameterized with arguments <>
An error occurred at line: [36] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
'<>' operator is not allowed for source level below 1.7
An error occurred at line: [36] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Incorrect number of arguments for type LinkedHashSet<E>; it cannot be parameterized with arguments <>
An error occurred at line: [43] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [47] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
An error occurred at line: [51] in the generated java file: [C:\Apache_Tomcat_9\apache-tomcat-9.0.98-windows-x64\apache-tomcat-9.0.98_Upgradation\work\Catalina\localhost\clover_portal\org\apache\jsp\export\exportCandidateList_jsp.java]
Syntax error, parameterized types are only available if source level is 1.5 or greater
Stacktrace:
at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:72)
at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:192)
at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:542)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:371)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:343)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:329)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:603)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:399)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:376)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:324)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:623)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:199)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:144)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:168)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:144)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:168)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:130)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:660)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:346)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:396)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:937)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1190)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63)
at java.lang.Thread.run(Thread.java:748)
I tried changing configurations related to the JSP in the Tomcat's web.xml:
<servlet>
<servlet-name>jsp</servlet-name>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
<init-param>
<param-name>fork</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>xpoweredBy</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>compilerSourceVM</param-name>
<param-value>1.8</param-value>
</init-param>
<init-param>
<param-name>compilerTargetVM</param-name>
<param-value>1.8</param-value>
</init-param>
<load-on-startup>3</load-on-startup>
</servlet>
I modified the Tomcat configuration in the web.xml file by adding some parameters for the JSP. What I expected: I expected this configuration change to resolve the issue by forcing the JSP compiler to use Java 1.8, which should resolve the errors related to parameterized types and the < > operator in the JSP code.
What actually happened: Despite these changes, the issue persists and the error messages are still appearing, suggesting that the JSP compiler is not using the correct Java version for compilation
Share Improve this question asked Feb 5 at 15:25 Jeganth R RJeganth R R 11 Answer
Reset to default 0The issue is because of ecj jar file. I had two jar files in my tomcat 9. ecj-4.2.2 and ecj-4.20. ecj-4.20 is tomcat 9 default jar file and i have copied ecj-4.2.2 from my tomcat 7 while upgradation. Once i removed ecj-4.2.2 from my tomcat 9 lib folder it worked for me.