How to populate sequence number automatically in fusion web application

Hi all,
I created simple fusion web application.
I created a form which has programid and remaining fields are there.
If i press save button program details will save in database.
here i am giving programid manually. but i need to generate a sequence number to programid automatically.
If i give program details and save for this program details one sequence number should be generate and save in databasePlease help me
Thanks,
raj

Here there are two methods given
1. Generating sequence number from the trigger
2. another one is from java class.
I tried two but i am not getting the sequence number.
In my application under model project i have programview.
i created CustomEntityEmpl java class.
I double clicked on programid in attributes window, given some sequence name in name field,given db sequence name as as value.
i mentioned name of sequence in Java class. but still it is asking a value when submiting the program details with out program id.
please help ASAP
Thanks
Nag

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              > D:\war>jar -tf gmi.war
              > META-INF/
              > META-INF/MANIFEST.MF
              > gmiService.jsp
              > WEB-INF/
              > WEB-INF/classes/
              > WEB-INF/classes/com/
              > WEB-INF/classes/com/bt/
              > WEB-INF/classes/com/bt/gmi/
              > WEB-INF/classes/com/bt/gmi/gmiService.class
              > WEB-INF/getList.xsl
              > WEB-INF/getListByConnection.xsl
              > WEB-INF/getListByDistrict.xsl
              > WEB-INF/getListByDistrictConnection.xsl
              > WEB-INF/lib/
              > WEB-INF/source/
              > WEB-INF/source/build.bat
              > WEB-INF/source/gmiService.java
              > WEB-INF/web.xml
              > WEB-INF/weblogic.xml
              > tmpwar/
              > tmpwar/jsp_servlet/
              > tmpwar/jsp_servlet/_gmiservice.class
              > tmpwar/jsp_servlet/_gmiservice.java
              >
              > When deployed on the production server with the web.xml file set to use
              the following values (note XML stripped):
              >
              > weblogic.jsp.pageCheckSeconds
              > -1
              >
              > weblogic.jsp.precompile
              > false
              >
              > weblogic.jsp.compileCommand
              > javac
              >
              > weblogic.jsp.verbose
              > true
              >
              > weblogic.jsp.packagePrefix
              > jsp_servlet
              >
              > weblogic.jsp.keepgenerated
              > false
              >
              >
              > And in the weblogic.properties file:
              >
              > weblogic.httpd.webApp.gmi=war/gmi
              >
              > I've also tried with the .war file, but that insists on creating another
              tmpwar directory outside of the .war file.
              >
              >
              > Then, although I have set pageCheckSeconds to -1 (don't check and don't
              recompile) ter production server still attempts to recompile the JSP's:
              >
              >
              > Mon Sep 25 11:40:11 BST 2000:<I> <WebAppServletContext-gmi> *.jsp: init
              > Mon Sep 25 11:40:11 BST 2000:<I> <WebAppServletContext-gmi> *.jsp: param
              verbose initialized to: true
              > Mon Sep 25 11:40:11 BST 2000:<I> <WebAppServletContext-gmi> *.jsp: param
              packagePrefix initialized to: jsp_servlet
              > Mon Sep 25 11:40:11 BST 2000:<I> <WebAppServletContext-gmi> *.jsp: param
              compileCommand initialized to: javac
              > Mon Sep 25 11:40:11 BST 2000:<I> <WebAppServletContext-gmi> *.jsp: param
              srcCompiler initialized to weblogic.jspc
              > Mon Sep 25 11:40:11 BST 2000:<I> <WebAppServletContext-gmi> *.jsp: param
              superclass initialized to null
              > Mon Sep 25 11:40:11 BST 2000:<I> <WebAppServletContext-gmi> *.jsp: param
              workingDir initialized to:
              /opt/wls-servers/gmiServer/weblogic/war/gmi/_tmp_war
              > Mon Sep 25 11:40:11 BST 2000:<I> <WebAppServletContext-gmi> *.jsp: param
              pageCheckSeconds initialized to: -1
              > Mon Sep 25 11:40:11 BST 2000:<I> <WebAppServletContext-gmi> *.jsp:
              initialization complete
              > Mon Sep 25 11:40:12 BST 2000:<I> <WebAppServletContext-gmi> Generated java
              file:
              /opt/wls-servers/gmiServer/weblogic/war/gmi/_tmp_war/jsp_servlet/gmiService.
              java
              > Mon Sep 25 11:40:14 BST 2000:<E> <WebAppServletContext-gmi> Compilation of
              /opt/wls-servers/gmiServer/weblogic/war/gmi/_tmp_war/jsp_servlet/gmiService.
              java failed: Exception in thread "main" java.lang.NoClassDefFoundError:
              sun/tools/javac/Main
              >
              > java.io.IOException: Compiler failed
              executable.exec([Ljava.lang.String;[javac, -classpath,
              /opt/Solaris_JRE_1.2.1_04/lib/rt.jar:/opt/Solaris_JRE_1.2.1_04/lib/i18n.jar:
              /opt/Solaris_JRE_1.2.1_04/classes:/var/wls/5.1/weblogic/lib/weblogic510sp4bo
              ot.jar:/var/wls/5.1/weblogic/classes/boot:/var/wls/5.1/weblogic/eval/cloudsc
              ape/lib/cloudscape.jar:/var/wls/5.1/weblogic/lib/wleorb.jar:/var/wls/5.1/web
              logic/lib/wlepool.jar:/var/wls/5.1/weblogic/lib/weblogic510sp4.jar:/var/wls/
              5.1/weblogic/license:/var/wls/5.1/weblogic/classes:/var/wls/5.1/weblogic/lib
              /weblogicaux.jar:/opt/wls-servers/gmiServer/weblogic/gmiServer/serverclasses
              :/opt/wls-servers/gmiServer/weblogic/lotusxsl.jar:/opt/wls-servers/gmiServer
              /weblogic/xerces.jar:/opt/wls-servers/gmiServer/weblogic/logging.jar::/opt/w
              ls-servers/gmiServer/weblogic/war/gmi/WEB-INF/classes:/opt/wls-servers/gmiSe
              rver/weblogic/war/gmi/_tmp_war, -d,
              /opt/wls-servers/gmiServer/weblogic/war/gmi/_tmp_war,
              /opt/wls-servers/gmiServer/weblogic/war/gmi/_tmp_war/jsp_servlet/gmiService.
              java])
              > at java.lang.Throwable.fillInStackTrace(Native Method)
              > at java.lang.Throwable.fillInStackTrace(Compiled Code)
              > at java.lang.Throwable.<init>(Compiled Code)
              > at java.lang.Exception.<init>(Compiled Code)
              > at java.io.IOException.<init>(Compiled Code)
              > at
              weblogic.utils.compiler.CompilerInvoker.compileMaybeExit(Compiled Code)
              > at
              weblogic.utils.compiler.CompilerInvoker.compile(CompilerInvoker.java:200)
              > at weblogic.servlet.jsp.JspStub.compilePage(Compiled Code)
              > at weblogic.servlet.jsp.JspStub.prepareServlet(JspStub.java:173)
              > at
              weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.java:18
              7)
              > at
              weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
              :118)
              > at
              weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
              :142)
              > at
              weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImp
              l.java:744)
              > at
              weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImp
              l.java:692)
              > at
              weblogic.servlet.internal.ServletContextManager.invokeServlet(ServletContext
              Manager.java:251)
              > at
              weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.java:363)
              > at
              weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:263)
              > at weblogic.kernel.ExecuteThread.run(Compiled Code)
              >
              >
              >
              

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