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doubts about primitives types

André Asantos
Ranch Hand

Joined: Nov 23, 2009
Posts: 234
please anybody else knows what Wrappers means? Are from JSE 5 right? And any primitive type has a wrapper class as java.lang.Double from double right?


Thank you very much,
André AS
Jesper de Jong
Java Cowboy
Saloon Keeper

Joined: Aug 16, 2005
Posts: 14193
    
  20

Googling for "java wrapper classes" gives you a lot of useful information in a fraction of a second.

For example: http://en.wikipedia.org/wiki/Primitive_wrapper_class

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Ahmed Attyah
Greenhorn

Joined: Apr 02, 2010
Posts: 4
sorry repeated post


Coming for you SCJP
Ahmed Attyah
Greenhorn

Joined: Apr 02, 2010
Posts: 4
here is Sang Shin slide explains Primitives & Wrapper Types in easy way
http://www.box.net/shared/rs77rf2q4u

Good Luck
marc weber
Sheriff

Joined: Aug 31, 2004
Posts: 11343

André Asantos wrote:... Are from JSE 5 right? ...

As Jesper's Wikipedia link explains, autoboxing was introduced in Java 5. However, the wrapper classes themselves have been around since Java 1.1.


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