RE: java.lang.NullPointerException....Helllloo PLZ HELP me
can you trouble shoot the null pointers.. i mean is pagecontext initialized.. do a system.out.println on it what the the exact lines of code the npe comes from.. are you using jikes to compile jsp or default javac?? man my boss is gonna kill me 2.. -Original Message- From: Naeem Malik [mailto:[EMAIL PROTECTED]] Sent: Friday, 18 May 2001 5:34 PM To: [EMAIL PROTECTED] Subject: java.lang.NullPointerExceptionHeoo PLZ HELP me HI i mailed again caz i need reply today, my Boss getting angry. Yesterday I was also mailed my problem but there was persons who guide me but i need more guidence to sort out that problem... so i m mailing again. I am webdevloper developing one website and using tools JSP, Servlet, and working on Jakarta-Tomcat version 3.1. I am the old user of jakarta-tomcat, so i know how to configure it properly. I m using tomcat for my website but from last 5 days, I am getting the problems what i undersatnd it is related to the buffer or context stuff but i m unbale to sort it out, so there is full description of my problem: 1>Some time it start working properly and then suddenly start give following Exception from Browser> Error: 500 Location: /examples/jsp/New/dyeing.jsp Internal Servlet Error: java.lang.NullPointerException at jsp.New._0002fjsp_0002fNew_0002fdyeing_0002ejspdyeing_jsp_0._jspService(_000 2fjsp_0002fNew_0002fdyeing_0002ejspdyeing_jsp_0.java:123) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:126) at javax.servlet.http.HttpServlet.service(HttpServlet.java:588) at org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.ja va:174) at org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:261) at org.apache.jasper.runtime.JspServlet.service(JspServlet.java:369) at javax.servlet.http.HttpServlet.service(HttpServlet.java:588) at org.apache.tomcat.core.ServletWrapper.handleRequest(ServletWrapper.java:503) at org.apache.tomcat.core.ContextManager.service(ContextManager.java:559) at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC onnectionHandler.java:160) at org.apache.tomcat.service.TcpConnectionThread.run(SimpleTcpEndpoint.java:338 ) at java.lang.Thread.run(Unknown Source) then i Checked the 123 line of _0002fjsp_0002fNew_0002fdyeing_0002ejspdyeing_jsp_0.java there was the following code: } catch (Exception ex) { if (out.getBufferSize() != 0) out.clearBuffer(); pageContext.handlePageException(ex); } finally { out.flush(); _jspxFactory.releasePageContext(pageContext); } OR Error: 500 Location: /examples Internal Servlet Error: java.lang.NullPointerException at org.apache.tomcat.servlets.DefaultServlet.serveFile(DefaultServlet.java:301) at org.apache.tomcat.servlets.DefaultServlet.doGet(DefaultServlet.java:218) at javax.servlet.http.HttpServlet.service(HttpServlet.java:499) at javax.servlet.http.HttpServlet.service(HttpServlet.java:588) at org.apache.tomcat.core.ServletWrapper.handleRequest(ServletWrapper.java:503) at org.apache.tomcat.core.ContextManager.service(ContextManager.java:559) at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC onnectionHandler.java:160) at org.apache.tomcat.service.TcpConnectionThread.run(SimpleTcpEndpoint.java:338 ) at java.lang.Thread.run(Unknown Source) then i Checked the 301 line of DefaultServlet.java there was the following code: if(absPath.indexOf("..") != -1) { // We have .. in the path... response.sendError(response.SC_NOT_FOUND); return; } 2> or very rarely it gives the following message or error> Error: 404 Location: / File Not Found / 3> even it gives like most common message of Browser by the giving the URL> http://localhost:8080 on InternetExplorer and then suddenly start working and then again same message which is as follow> The page cannot be found bla bla bla HTTP 404 - File not found Internet Explorer The following r the configurations of My system I am using Compaq 800 MHZ of PIII, 20 GB Hard Disk, 128 MB RAM. Operating System WinNT 4 +Service Pack 5 Data Base Oracle 8 Tools JDK1.3.0_01, JSP1.1, Servlet, Jakarta-ant, JavaScript, HTML and etc Autoexec.bat Path = set PATH=%PATH%;c:\jdk13\bin;c:\java\jakarta-tomcat\bin set JAVA_HOME=c:\jdk13 set CLASSPATH=.;c:\jdk13\jre\lib\rt.jar; c:\jdk13\lib\tools.jar; c:\jdk13\lib\jsdk.jar; c:\java\jakarta-tomcat\lib\servlet.jar s
java.lang.NullPointerException....Helllloo PLZ HELP me
HI i mailed again caz i need reply today, my Boss getting angry. Yesterday I was also mailed my problem but there was persons who guide me but i need more guidence to sort out that problem... so i m mailing again. I am webdevloper developing one website and using tools JSP, Servlet, and working on Jakarta-Tomcat version 3.1. I am the old user of jakarta-tomcat, so i know how to configure it properly. I m using tomcat for my website but from last 5 days, I am getting the problems what i undersatnd it is related to the buffer or context stuff but i m unbale to sort it out, so there is full description of my problem: 1>Some time it start working properly and then suddenly start give following Exception from Browser> Error: 500 Location: /examples/jsp/New/dyeing.jsp Internal Servlet Error: java.lang.NullPointerException at jsp.New._0002fjsp_0002fNew_0002fdyeing_0002ejspdyeing_jsp_0._jspService(_0002fjsp_0002fNew_0002fdyeing_0002ejspdyeing_jsp_0.java:123) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:126) at javax.servlet.http.HttpServlet.service(HttpServlet.java:588) at org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.java:174) at org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:261) at org.apache.jasper.runtime.JspServlet.service(JspServlet.java:369) at javax.servlet.http.HttpServlet.service(HttpServlet.java:588) at org.apache.tomcat.core.ServletWrapper.handleRequest(ServletWrapper.java:503) at org.apache.tomcat.core.ContextManager.service(ContextManager.java:559) at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:160) at org.apache.tomcat.service.TcpConnectionThread.run(SimpleTcpEndpoint.java:338) at java.lang.Thread.run(Unknown Source) then i Checked the 123 line of _0002fjsp_0002fNew_0002fdyeing_0002ejspdyeing_jsp_0.java there was the following code: } catch (Exception ex) { if (out.getBufferSize() != 0) out.clearBuffer(); pageContext.handlePageException(ex); } finally { out.flush(); _jspxFactory.releasePageContext(pageContext); } OR Error: 500 Location: /examples Internal Servlet Error: java.lang.NullPointerException at org.apache.tomcat.servlets.DefaultServlet.serveFile(DefaultServlet.java:301) at org.apache.tomcat.servlets.DefaultServlet.doGet(DefaultServlet.java:218) at javax.servlet.http.HttpServlet.service(HttpServlet.java:499) at javax.servlet.http.HttpServlet.service(HttpServlet.java:588) at org.apache.tomcat.core.ServletWrapper.handleRequest(ServletWrapper.java:503) at org.apache.tomcat.core.ContextManager.service(ContextManager.java:559) at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:160) at org.apache.tomcat.service.TcpConnectionThread.run(SimpleTcpEndpoint.java:338) at java.lang.Thread.run(Unknown Source) then i Checked the 301 line of DefaultServlet.java there was the following code: if(absPath.indexOf("..") != -1) { // We have .. in the path... response.sendError(response.SC_NOT_FOUND); return; } 2> or very rarely it gives the following message or error> Error: 404 Location: / File Not Found / 3> even it gives like most common message of Browser by the giving the URL> http://localhost:8080 on InternetExplorer and then suddenly start working and then again same message which is as follow> The page cannot be found bla bla bla HTTP 404 - File not found Internet Explorer The following r the configurations of My system I am using Compaq 800 MHZ of PIII, 20 GB Hard Disk, 128 MB RAM. Operating System WinNT 4 +Service Pack 5 Data Base Oracle 8 Tools JDK1.3.0_01, JSP1.1, Servlet, Jakarta-ant, JavaScript, HTML and etc Autoexec.bat Path = set PATH=%PATH%;c:\jdk13\bin;c:\java\jakarta-tomcat\bin set JAVA_HOME=c:\jdk13 set CLASSPATH=.;c:\jdk13\jre\lib\rt.jar; c:\jdk13\lib\tools.jar; c:\jdk13\lib\jsdk.jar; c:\java\jakarta-tomcat\lib\servlet.jar set ANT_HOME=c:\java\jakarta-ant set Temp=C:\Temp I will be very thanks full if you guide me that whatÂ’s going on, is there some thing wrong with product or there is some problem in my configuration. Where as I using tomcat on port 8080 and I changed it many times but nothing happen else dam exceptions or messages. I installed JDK1.3 & Tomcat 10 times in these 4 days with different settings but I am still not able to sort out the problem. So again I am very