Arrays.binarySearch(Object[], keyValue) and Reflection API

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Stalin - 29 Sep 2005 17:22 GMT

Hi guys,
public Objectbinary(Object[], String keyName, String keyValue){

????????
int index = binarySearch(Object[],????);
return Object[index];
}
To make this method work I have to give it array and object that it will be
looking for. The thing is I don't know what kind of object in Object [] so I
have construct it during runtime by only have keyName (Ex. "LastName" ) and
keyValue (Ex "Robinson").

I've been deeging Reflection API last couple of days but can't figure this
one out.

Anybody have an idea how to do it?

Thanks

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Roedy Green - 29 Sep 2005 23:48 GMT

>To make this method work I have to give it array and object that it will be
>looking for. The thing is I don't know what kind of object in Object [] so I
[quoted text clipped - 5 lines]
>
>Anybody have an idea how to do it?

I suspect you may not need reflection at all.

All you need as a class called KV with two String fields key and
value. You would implement a hashCode and equals method. See
http://mindprod.com/jgloss/hashmap.html

You then can say

map .add ( "LastName", new KV( "LastName", "Robinson" ) )

Or maybe you don't even need that just use String as both key and
value.

HashMap<String,String> map = new HashMap<String,String>( 149 );

map.put ( "LastName", "Robinson" );

String value = map.get( "LastName");

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Canadian Mind Products, Roedy Green.
http://mindprod.com Again taking new Java programming contracts.

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Arrays.binarySearch(Object[], keyValue) and Reflection API

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