Strange behaviour with Object.intValue()

Question

I am struggling with a problem, which I can\'t understand why it doesn\'t work. How do I pass a variable through the double obj and convert to int

Answer 1

The double is a primitive type, while the Double is a regular Java class. You cannot call a method on a primitive type. The intValue() method is however available on the Double, as shown in the javadoc

Some more reading on those primitive types can be found here