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Madishetty Rajarshi
Passing a 2 Dimentional Array From one Jsp to Another Jsp file and Retreving it
0 Answer(s)      2 years and 10 months ago
Posted in : JSP-Interview Questions


Hi I have a 2 dimensional integer array declared and values are dynamically stored into it in one jsp file .I passed this array into another Jsp File and when i tried to retrieve the data in the 2 Dimensional array it is raising a Null Pointer Exception.I am attaching the sample code . Please help Me

JSP FILE 1 : // declatarion int final_equivalentset[][] = new int[5050][5050]; // values are entered dynamically session.setAttribute("myequivalentset",final_equivalentset);// added to session attribute

JSP FILE 2 : // the file where i retrieve the data

            Object obj =(int[][])session.getAttribute("myequivalentset");
    int equivalentset[][] = ( int[][])obj;

1----> **for( int check1 = 0;final_equivalentset[i-1][check1]!=0; check1++)
2----> { %><%= final_equivalentset[i-1][check1] %> <% } %>
<% **

The above code is raising the Null Pointer Exception Both at lines marked as 1---> and 2---> its stack trace is

strong text java.lang.NullPointerException org.apache.jsp.Major0020Project.Blue005fGray005fTemplate.signaturesjsp.jspService(signaturesjsp.java:161) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) strong text

Please do help me as this is my Major Project and have very less Time in my hand .

Thanks and regards Rajarshi


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