Does int.class equal Integer.class or Integer.TYPE in Java?

Question

Let's imagine one retrieves the declaring type of a Field using reflection.

Which of the following tests will correctly indicate whether one is dealing with an int or an Integer?

Field f = ... Class<?> c = f.getDeclaringClass(); boolean isInteger;  isInteger = c.equals(Integer.class); isInteger = c.equals(Integer.TYPE); isInteger = c.equals(int.class);  isInteger = ( c == Integer.class); isInteger = ( c == Integer.TYPE); isInteger = ( c == int.class); 

Answer 1

Based on Field.getType() (instead of f.getDeclaringClass()), I get the following:

Type: java.lang.Integer  equals(Integer.class): true equals(int.class)    : false equals(Integer.TYPE) : false == (Integer.class)   : true == (int.class)       : false == (Integer.TYPE)    : false  Type: int  equals(Integer.class): false equals(int.class)    : true equals(Integer.TYPE) : true == (Integer.class)   : false == (int.class)       : true == (Integer.TYPE)    : true  Type: java.lang.Object  equals(Integer.class): false equals(int.class)    : false equals(Integer.TYPE) : false == (Integer.class)   : false == (int.class)       : false == (Integer.TYPE)    : false 

Meaning the following is true:

Integer.TYPE.equals(int.class) Integer.TYPE == int.class 

Meaning if I want to find out whether I am dealing with an int or an Integer, I can use any of the following tests:

isInteger = c.equals(Integer.class) || c.equals(Integer.TYPE); isInteger = c.equals(Integer.class) || c.equals(int.class); isInteger = (c == Integer.class) || (c == Integer.TYPE); isInteger = (c == Integer.class) || (c == int.class ); 

Is there a corner case I am missing? If yes, please comment.