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07.16.2008 at 08:48AM PDT, ID: 23570135 | Points: 125
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How to convert String Object into HashMap Object

Asked by babulu in Java Programming Language, Java Server Pages (JSP), Java Standard Edition

Tags: sun, Collections, Java1.5

I sent HashMap object through URL parameter, from JSP into action class. like this
  "/search.jsp?data="+objName

when I am trying to fetch that value in Action class using --  request.getParameter(" obj") --- it is giving String rather than HashMap object.

I want to typecast  that String again into HashMap object so that i can iterate and fetch the HashMap object values.  Is there a way to get the solution.Start Free Trial 
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Map map =  new HashMap();
 Object obj = new Object();
 String str = request.getParameter("data");
 obj = (Object)str;
 map = (HashMap) obj;   // line 10
 
No compile time errors, but while running its giving
"javax.servlet.ServletException: java.lang.ClassCastException: java.lang.String"  ---> indicating toward line number 10
 
Keywords: How to convert String Object into Hash…
Title
1 Display values contained in a HashMap
2 Deleting HashMap entries while iterating?
3 Sort HashMap
4 convert a ArrayList to a Hashmap
5 HashMap
6 hashmaps
 
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[+][-]07.16.2008 at 09:30AM PDT, ID: 22017552

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[+][-]07.16.2008 at 09:33AM PDT, ID: 22017576

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[+][-]07.16.2008 at 09:38AM PDT, ID: 22017620

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[+][-]07.16.2008 at 09:42AM PDT, ID: 22017660

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[+][-]07.16.2008 at 10:17AM PDT, ID: 22018057

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[+][-]07.16.2008 at 10:20AM PDT, ID: 22018092

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[+][-]07.16.2008 at 10:32AM PDT, ID: 22018202

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[+][-]07.16.2008 at 10:40AM PDT, ID: 22018271

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[+][-]07.16.2008 at 10:47AM PDT, ID: 22018328

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[+][-]07.16.2008 at 11:10AM PDT, ID: 22018572

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[+][-]07.16.2008 at 11:14AM PDT, ID: 22018613

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[+][-]07.16.2008 at 11:54AM PDT, ID: 22018958

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[+][-]07.16.2008 at 01:38PM PDT, ID: 22019898

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[+][-]08.20.2008 at 06:41AM PDT, ID: 22269292

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