Java equivalent of Ruby ObjectSpace.each_object -

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I'm looking for a way to get all the types of instant objects in Java.

With Ruby you can use the ObjectSpace.each_object method: 

  a = 102.7 b = 95.1 ObjectSpace.each_object {numeric} {| X | Px}  

  95.1 102.7

is not equal to this

In this way you can do something in Java that every class will have to create and maintain a collection of all the examples. IMO, this would be a bad idea, unless there are exceptional circumstances that justify overheads. For starters, the "All Examples" collection will need to be implemented in such a way that avoid garbage retention.


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