Duvida JSP check box

Bom tenho uma pagina de teste onde tenho 10 checkbox
quando o usuario seleciona uma lista tipo checkbox 2,4,6,8
e tendo manter na sessao os checkbox marcados so consegui manter um ultimo que no caso e o 8.
O problema e esse sera que alguem tem alguma manha ai..

valeu pessoal....

o codigo e o seguinte

&lt;%@page contentType=&quot;text/html&quot;%&gt;




&lt;%  
	response.setDateHeader&#40;&quot;Expires&quot;, 0&#41;;
    response.setHeader&#40;&quot;Pragma&quot;, &quot;no-cache&quot;&#41;;
    response.setHeader&#40;&quot;Cache-Control&quot;, &quot;no-cache&quot;&#41;;
%&gt;

&lt;form name='form' action='/sisgea/teste.jsp'&gt;
&lt;table&gt;
 &lt;tr&gt;
&lt;% 	String &#91;&#93; checks = &#40;&#40;request.getParameterValues&#40;&quot;check&quot;&#41; != null &#41;? request.getParameterValues&#40;&quot;check&quot;&#41; &#58; null &#41; ; %&gt;
&lt;%  String valorCheck = &quot;&quot; ;
 for&#40; int i=0; i &lt; 10; i++&#41;&#123;%&gt;
	  &lt;% valorCheck = &#40;&#40;checks != null &amp;&amp; checks.length &gt; i &#41;? checks&#91;i&#93; &#58; valorCheck &#41;;%&gt;
 	   &lt;td align=&quot;center&quot;&gt;&lt;input type=&quot;checkbox&quot; name=&quot;check&quot; value='&lt;%=i%&gt;' &lt;%=&#40;&#40;valorCheck.equalsIgnoreCase&#40;String.valueOf&#40;i&#41;&#41; &#41;? &quot;checked&quot; &#58; &quot;&quot; &#41;%&gt; &gt;&lt;/td&gt;
	&lt;%System.out.println&#40;&quot;o valor da variavel = &quot; + valorCheck&#41;;%&gt;
	&lt;%&#125;%&gt;

 &lt;/tr&gt;
 &lt;tr&gt;
 &lt;td&gt;&lt;input type='submit'name=&quot;ok&quot; value=&quot;ok&quot; &gt;&lt;/td&gt;
 &lt;/tr&gt;
&lt;/table&gt;
&lt;table&gt;
&lt;tr&gt;
	&lt;td&gt;Dias Selecionados&lt;/td&gt;
    &lt;%if&#40; checks != null&#41; &#123;
    	for&#40;int i=0; i &lt; checks.length ; i++&#41; &#123;%&gt;
    		&lt;td&gt;&lt;%=Integer.parseInt&#40;checks&#91;i&#93;&#41; + 1%&gt;&lt;/td&gt;
    	&lt;%&#125; &#125;%&gt;
&lt;/tr&gt;

&lt;/table&gt;
&lt;/form&gt;

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