Creating object using Class class in Java

Question

int.class returns an object of class type.

although there is a method to invoke constructor of a class, but since int.class represents primitive data type so no constructor are available.

Is there any way to create an int variable from int.class object ??

@DanielA.White: Our Main class contains members of different classes and many primitive data types too. The code takes input from some external entity and converts it into appropriate data type and initializes the value with it. using relfextion, we determine type of the member and continuing on same way, we cast into object or primitive data. — Mahesh Gupta
– Mahesh Gupta, Commented Dec 9, 2011 at 15:24
Can you give an example where you need to use a primitive with reflection? — Peter Lawrey
– Peter Lawrey, Commented Dec 9, 2011 at 15:42

Peter Lawrey · Accepted Answer · 2011-12-09 14:50:42Z

2

You cannot create an instance of a primitive. Primitives are not Objects by definition. You can create an instance of a wrapper e.g. Integer which has a constructor which takes an int

answered Dec 9, 2011 at 14:50

Peter Lawrey

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3 Comments

Mahesh Gupta Over a year ago

so, if i get int.class object, is there any way of getting corresponding wrapper class from int.class itself ?? I don't want to go for hardcoding this stuff.. so, i'm trying to find if any method is available for the same..

Peter Lawrey Over a year ago

There are only 7 (or 8 if you include void) wrappers and its not something you need to do very often because you don't use primitives with reflections.

Peter Lawrey Over a year ago

I suspect you don't need to create such an Integer if you are using reflection as it implicitly converts primitives to their wrappers as required.

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