Error in variables,plz help me

I created a variable del_var.The sql query assosiated with this variable is.
Delete from schema.file_name_table where rownum=1;
After refreshing it.it is deleting first row in the table.But it is resulting in an error
"17003 : null : java.sql.SQLException: Invalid column index java.sql.SQLException: Invalid column index "
Plz help me

Hi,
You can't use a 'Delete" command at a refreshing variable because at a refresch the variable need to receive a value back and the delete doesn't return value.
Change the command to "select....."
Does it make sense to you?

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    THANKS
    class A1Q2
    public static void main (String[] args)
    double income ;
    System.out.println ("Please enter yearly income: ");
    income = ITI1120.readDouble( );
    char tax;
    if (income <= 37885) {
    tax = 'A';
    } else if ( (income > 37885) && (income <= 75769) ) {
    tax = 'B';
    } else if ( (income > 75769) && (income <= 123184) ) {
    tax = 'C';
    } else if (income > 123184) {
    tax = 'D';
    System.out.println("Tax = " + tax);
    }

    Hello slvr99,
    Firstly, can you please use the CODE button to format your code when you post? It just makes it a lot easier for us to read.
    As for your error, it really is quite literal.
    variable tax might not have been initialized
    means that the variable you have called "tax" may not have been initialized, you just need to set it:
    char tax = '';

  • Plz help me with this error

    hello plz help me wat i can do for this error and plz also tell me where to place the POI api in tomcat directory.........
    The server encountered an internal error () that prevented it from fulfilling this request.
    exception
    org.apache.jasper.JasperException: Unable to compile class for JSP
    An error occurred at line: 22 in the jsp file: /HSSFExample.jsp
    Generated servlet error:
    [javac] Compiling 1 source file
    C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\examples\HSSFExample_jsp.java:13: ';' expected
    import org.a
    ^
    C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\examples\HSSFExample_jsp.java:8: package org.apache.poi.poifs.filesystem does not exist
    import org.apache.poi.poifs.filesystem.POIFSFileSystem;
    ^
    C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\examples\HSSFExample_jsp.java:9: package org.apache.poi.hssf.record does not exist
    import org.apache.poi
    ^
    C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\examples\HSSFExample_jsp.java:11: package org.apache.poi.hssf.model does not exist
    import org.apache.poi.hssf.model.*;
    ^
    C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\examples\HSSFExample_jsp.java:12: package org.apache.poi.hssf.usermodel does not exist
    import org.apache.poi.hssf.usermodel.*;
    ^
    C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\examples\HSSFExample_jsp.java:13: cannot resolve symbol
    symbol : class a
    location: package org
    import org.a
    ^
    C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\examples\HSSFExample_jsp.java:74: cannot resolve symbol
    symbol : class POIFSFileSystem
    location: class org.apache.jsp.HSSFExample_jsp
    POIFSFileSystem fs =
    ^
    An error occurred at line: 22 in the jsp file: /HSSFExample.jsp
    Generated servlet error:
    C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\examples\HSSFExample_jsp.java:75: cannot resolve symbol
    symbol : class POIFSFileSystem
    location: class org.apache.jsp.HSSFExample_jsp
    new POIFSFileSystem(new FileInputStream(filename));
    ^
    An error occurred at line: 22 in the jsp file: /HSSFExample.jsp
    Generated servlet error:
    C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\examples\HSSFExample_jsp.java:76: cannot resolve symbol
    symbol : class HSSFWorkbook
    location: class org.apache.jsp.HSSFExample_jsp
    HSSFWorkbook wb = new HSSFWorkbook(fs);
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    An error occurred at line: 22 in the jsp file: /HSSFExample.jsp
    Generated servlet error:
    C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\examples\HSSFExample_jsp.java:76: cannot resolve symbol
    symbol : class HSSFWorkbook
    location: class org.apache.jsp.HSSFExample_jsp
    HSSFWorkbook wb = new HSSFWorkbook(fs);
    ^
    An error occurred at line: 35 in the jsp file: /HSSFExample.jsp
    Generated servlet error:
    C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\examples\HSSFExample_jsp.java:89: cannot resolve symbol
    symbol : class HSSFSheet
    location: class org.apache.jsp.HSSFExample_jsp
    HSSFSheet sheet = wb.getSheetAt(k);
    ^
    An error occurred at line: 35 in the jsp file: /HSSFExample.jsp
    Generated servlet error:
    C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\examples\HSSFExample_jsp.java:94: cannot resolve symbol
    symbol : class HSSFRow
    location: class org.apache.jsp.HSSFExample_jsp
    HSSFRow row = sheet.getRow(r);
    ^
    An error occurred at line: 48 in the jsp file: /HSSFExample.jsp
    Generated servlet error:
    C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\examples\HSSFExample_jsp.java:108: cannot resolve symbol
    symbol : class HSSFCell
    location: class org.apache.jsp.HSSFExample_jsp
    HSSFCell cell = row.getCell(c);
    ^
    An error occurred at line: 48 in the jsp file: /HSSFExample.jsp
    Generated servlet error:
    C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\examples\HSSFExample_jsp.java:115: cannot resolve symbol
    symbol : variable HSSFCell
    location: class org.apache.jsp.HSSFExample_jsp
    case HSSFCell.CELL_TYPE_FORMULA :
    ^
    An error occurred at line: 48 in the jsp file: /HSSFExample.jsp
    Generated servlet error:
    C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\examples\HSSFExample_jsp.java:119: cannot resolve symbol
    symbol : variable HSSFCell
    location: class org.apache.jsp.HSSFExample_jsp
    case HSSFCell.CELL_TYPE_NUMERIC :
    ^
    An error occurred at line: 48 in the jsp file: /HSSFExample.jsp
    Generated servlet error:
    C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\examples\HSSFExample_jsp.java:125: cannot resolve symbol
    symbol : variable HSSFCell
    location: class org.apache.jsp.HSSFExample_jsp
    case HSSFCell.CELL_TYPE_STRING :
    ^
    16 errors
         at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:85)
         at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:248)
         at org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:315)
         at org.apache.jasper.compiler.Compiler.compile(Compiler.java:328)
         at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:427)
         at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:142)
         at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:240)
         at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:187)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:200)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:146)
         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:209)
         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:144)
         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
         at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:445)
         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
         at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2358)
         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:133)
         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
         at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:118)
         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:116)
         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:127)
         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
         at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:152)
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         at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
         at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
         at java.lang.Thread.run(Thread.java:536)

    You can put the POI jar file in the WEB-INF/lib directory of your application, or if you want to use it in multiple applications you can put it in the tomcat 4.1/shared/lib directory.

  • Error while opening a module. plz help me, very urgent.

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    Can you provide some more information? What were you doing when this happened?
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              -- Rob
              WLS Blog http://dev2dev.bea.com/blog/rwoollen/

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