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why i can't get the hashtable value printed?

2 replies on 1 page. Most recent reply: Sep 20, 2006 3:09 AM by anuj singhal

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meir meir

Posts: 1
Nickname: umen
Registered: Aug, 2006

why i can't get the hashtable value printed?

Posted: Aug 30, 2006 8:41 AM

hello all
i have simple hashtable i can get the keys but i cant get the values
why?
<%String event = request.getParameter("eventFrom") ;event = (event != null ? event : "");if(event.equalsIgnoreCase("result")){ java.util.Hashtable myHashtbl = new java.util.Hashtable(request.getParameterMap()); if(!myHashtbl.isEmpty()){ Enumeration keysEnum = myHashtbl.keys(); while(keysEnum.hasMoreElements()){ String keyName = (String)keysEnum.nextElement(); String keyValue = (String)myHashtbl.get(keyName.toString()); out.println("KeyName: "+keyName+"<br>"); out.println("ValueName: "+keyValue+"<br>"); } } }else{ }%><html><body><form name="test" id="test" action="<%= request.getRequestURI() %>" method="get" ><input type="hidden" name="eventFrom" value="result" ><input type="hidden" name="<%="this_is_key_1" %>" value="<%= "4444444" %>" /><input type="hidden" name="<%="this_is_key_2" %>" value="<%= "2424"%>" /><input type="submit" name="okButton" id="okButton" class="button" style="width:80px;" value="Submit" /></form></body></html>

joe smith

Posts: 21
Nickname: jetbrains
Registered: Jan, 2006

Re: why i can't get the hashtable value printed?

Posted: Aug 31, 2006 11:59 PM

It's hard to see your code because of disorder.
See this java hashmap tutorial,hope it help
http://www.developerzone.biz/index.php?option=com_content&task=view&id=90&Itemid=36

anuj singhal

Posts: 4
Nickname: anujs
Registered: Sep, 2006

Re: why i can't get the hashtable value printed?

Posted: Sep 20, 2006 3:09 AM

Following code snippet is causing you trouble
String keyValue = (String)myHashtbl.get(keyName.toString());

Instead,
do it this way:-
String keyValue = (String)myHashtbl.get(keyName);

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