create dynamic row in jsp using for loop

Question

i want to create a table with dynamic no of rows by this way

<table width="89%" style="margin-left:30px;">                   <%
    for (int arrayCounter = 0; arrayCounter < documentList.size(); arrayCounter++) {

    %>
    <% 
    int test = arrayCounter;
    if((arrayCounter%2)==0)){                       
    %>
    <tr>
    <%
    } %>
     <td style="width:2%">

    </td>
     <td style="width:20%;align:left;">
     </td>

      <td style="width:30%;align:left;">

    </td>
    <% 
     if((arrayCounter%2)==0){
      %>
   </tr>
    <%   } %>

     <%
    }
     %>
     </table>

in my jsp this way it will create 4 rows but according coding function it would create 2 row only if documentlist.size()=4; help me !

score 1 · Answer 1 · answered Feb 27 '14 at 07:48

1

Obviously it will create only 2 tow when size is 4, when size is 6 it will create 3 row. remove it statement from loop if you want to create rows equal to number if size

answered Feb 27 '14 at 07:48

V__

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V__ · Answer 2 · 2014-02-27T08:22:55.817

0

remove if statements from loop and create rows normally.

change your loop with this for (int arrayCounter = 0; arrayCounter < (documentList.size()/2); arrayCounter++)

and for last row you can have if statement which will compare if (documentList.size()/2)-1 == arrayCounter).. then you will get what you are looking for

else

for (int arrayCounter = 0; arrayCounter < documentList.size(); arrayCounter++) {

if (documentList.size()/2)-1 == arrayCounter){  create 1 row}else{
create 1st row and then arraycounter ++
create 2nd row and then arraycounter ++

} }

edited Feb 27 '14 at 08:22

answered Feb 27 '14 at 08:02

V__

538
10
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do you thing it will solve our problem bcoz your loop run by size/2 times but we need to iterate all data ? – Prashant Aggarwal Feb 27 '14 at 08:10

score 0 · Answer 3 · edited May 23 '17 at 11:56

Don't use scriptlets in jsp, Jsp is is view layer, use as a view. there is servlet/java-beans to put your all java code.

There is jstl taglib, which has many inbuild functions, use it. you can get it from here

In your case to loop over a list do like this:

Add jstl library to your classpath
First import jstl taglib in top of your jsp.
Then you have jstl tags to use in your jsp.

To import jstl in jsp do like:

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

for looping a List in jstl, there is c:forEach tag, you can use it like:

<c:forEach items="${documentList}" var="doc">
   //here you can access one element by doc like: ${doc}
</c:forEach>

If you want to generate table rows, for each documentList element, then do like:

<table width="89%" style="margin-left:30px;">
<c:forEach items="${documentList}" var="doc" varStatus="loop">
  <tr>
    <td style="width:2%">
      //here if you want loop index you can get like: ${loop.index}
    </td>
    <td style="width:20%;align:left;">
     //if you want to display some property of doc then do like: ${doc.someProperty}, 
      jstl will call getter method of someProperty to get the value.

    </td>
    <td style="width:30%;align:left;">

    </td>
  </tr>
</c:forEach>
</table>

read more here for how to avoid java code in jsp.

create dynamic row in jsp using for loop

3 Answers3