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put float into hashMap  RSS feed

 
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Hi,

what I need to do that I can put float value into hashMap, because hash map takes only integer or string value


there is no
 
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Maps can take any Object, for both key and value. So:

is perfectly valid.
 
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Hi Marko,

Paul is right, however in Java 5, with autoboxing feature, a HashMap can take say a primitive key and a primitive value(e.g HashMap<int,float> , JVM in turn does the autoboxing behind the scenes for you.

Goodluck
[ June 04, 2007: Message edited by: lhorenz baylon ]
 
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Originally posted by lhorenz baylon:
Hi Marko,

...(e.g HashMap<int,float> , JVM in turn does the autoboxing behind the scenes for you.



Note, you can't write HashMap<int, float>, that will result in a compiler error. The things between the angle brackets cannot be primitive types. Hoewever, you can make a HashMap<Integer, Float> and Java 5 autoboxing:
 
Lorenz Baylon
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oh yes, my bad, sorry and thanks
 
It is sorta covered in the JavaRanch Style Guide.
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