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convert map problem

 
yu naki
Greenhorn
Posts: 2
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I have a HasMap<String Set<Postcode>>postCodeMap in the action class and I hope to convert it into String type, Any know how can I write Element_xxx in action-convertion-properties file?

I try Element_postCodeMap = java.util.Set and Element_postCodeMap = java.util.Map.Entry
and Element_postCodeMap = java.util.Set<com.Postcode>

but none of them can work.

public Postcode class{
String type//key of hashMap
String postcode;

getter and setter
}

thanks
 
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