Hello good afternoon. How to declare Boolean data type member as a null in default constructor ?

Question

Boolean data type

Answer 1

Boolean is a class. However, boolean is a primitive data type.

Answer 2

A primitive type boolean cannot be null in java.

however...

A class type Boolean can be null.

try this..

btw the reason the output is null is becuase var boo is not affected as boo == null is infact true.

Boolean boo = null;

if (boo == null) {System.out.println(boo);}

Answer 3

private boolean name = null != null;

Answer 4

I tried it in eclipse, you have to put private boolean (variable) = null != null;. How is that possible?

Answer 5

what is difference between Boolean and boolean?

Answer 6

Boolean (capital B) is a wrapper class
boolean (small b) is a data type.

Answer 7

thanks guys