asked on

JSTL for loop

Hi Experts,

I have three arraylists with String elements. All three ArrayLists are in page scope namely:

applications, aspects, groups

On my jsp page I have 3 lists <li> with anchor tags(Code below), Now I want to populate these three <li>'s lists with the contents of my ArrayLists. how do I do that?

#################### HTML CODE ############################

<tr>
<td class="groups">
<ul>
<li><a href="#">AAA</a></li>
<li><a href="#">BBB</a></li>
<li><a href="#">CCC</a></li>
</ul>
</td>

<td class="applications">
<ul>
<li><a href="#">XYZ</a></li>
<li><a href="#">HJK</a></li>
<li><a href="#">KOP</a></li>
<li><a href="#">ILP</a></li>
<li><a href="#">TDF</a></li>
<li><a href="#">DEI</a></li>

</ul>
</td>

<td class="aspects">
<ul>
<li><a href="#">Ava</a></li>
<li><a href="#">Hardware</a></li>
<li><a href="#">Perf</a></li>
<li><a href="#">Trouble</a></li>
<li><a href="#">Trans</a></li>
</ul>
</td>

</tr>

Sathish David Kumar N

can u bit clear??

aman0711

ASKER

Hi dravid..

I want to populate these HTML <a> links with the content of my Arraylists.

Like ArrayList "groups" has 3 Strings: AAA, BBB, CCC

so this piece of code:
<tr>
<td class="groups">
<ul>
<li><a href="#">AAA</a></li>
<li><a href="#">BBB</a></li>
<li><a href="#">CCC</a></li>
</ul>
</td>

should get values from the ArrayList variable groups. Right now its hardcoded HTML

Sathish David Kumar N

where u get the a href value or is it still # only

aman0711

ASKER

It should be same as the content inside the TAG.

For example:

<li><a href="AAA">AAA</a></li>

Dravid please help me out with this :)

ASKER CERTIFIED SOLUTION

Sathish David Kumar N

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aman0711

ASKER

Thanks dravid,

this will surely work.

Can you see what is wrong with this piece of code? This method gets the applications from the DB. I am getting a nullpointerexception.

  public ArrayList getApplication() throws SQLException{
	    		    	
	    	  DbJDBC db = new DbJDBC();
	    	  
	    	  Connection conn = db.getConnection();
	    	  
	    	  String sql = "SELECT APPLICATIONS FROM VSLAND.SIWEB_HOME_TAB";
	    	  try {
				 stmt = conn.createStatement();
				
			    	rs = stmt.executeQuery(sql);
				 
					while (rs.next()) {
						
					   applications.add(rs.getString(1));
							  					   
					}
					
				
			} catch (SQLException e) {
				
				e.printStackTrace();
			}
	            rs.close();
		        stmt.close();
		        conn.close();
		        
		  return applications;   
	    	    	
	    }

Open in new window

Sathish David Kumar N

where u define application list ??
i think rs.getString(1) this is the pblm check that ?

Sathish David Kumar N

jsut print be4 adding!1

aman0711

ASKER

Ok.. give me 2 mins

aman0711

ASKER

Hey dravid,

I fixed that... but output is little weird. I guess we need to break the loop?

jstl-snap.PNG

Sathish David Kumar N

is it infinity loop???

Sathish David Kumar N

Sathish David Kumar N

<c:forEach var="i" begin="1" end="20" step="1" varStatus ="status">
if u know the size u directly give here!!

Sathish David Kumar N

i think DB retrive value have the issue!!!

Sathish David Kumar N

we will meet 2morrow gd nite...

aman0711

ASKER

Hi Dravid,

still no difference.

Why is it printing the whole array list at the bottom

aman0711

ASKER

Thanks for the help :)

Mick Barry

try this:

         <c:forEach var="group" items="${groups}">
            <a href="${group}">${group}</a>
         </c:forEach>

Open in new window

aman0711

ASKER

Thanks man