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javareflectionprimitive

Integer.class vs int.class

What is the difference between Integer.class, Integer.TYPE and int.class?

acc to me

  1. Integer.class is a reference of Integer (Wrapper) Class object
  2. but what is then int.class as int is not a class, it's a primitive type. And what does Integer.TYPE refer to?
Solution

  • From java.lang.Class.isPrimitive API

    There are nine predefined Class objects to represent the eight primitive types and void. These are created by the Java Virtual Machine, and have the same names as the primitive types that they represent, namely boolean, byte, char, short, int, long, float, and double.

    These objects may only be accessed via the following public static final variables java.lang.Boolean.TYPE, java.lang.Integer.TYPE etc