[✅SOLVED✅] Difference between int and Integer.

Question

I am currently learning Java, and have come across a really weird thing I really can't wrap my head around. What is "int" and what is "Integer," and what is the difference?

Answer 1

int-primitive type.
Integer-class.

Answer 2

for more information:
https://stackoverflow.com/questions/8660691/what-is-the-difference-between-integer-and-int-in-java

Answer 3

Yes ArrayLists store objects only but not primitive types in Java.

Good read:
https://stackoverflow.com/q/5414920

Answer 4

OK. Thanks! So in general I should use int, and when defining new things like ArrayLists I should use Integer?

Answer 5

int drops the value after the (.), and it is a primitive type. Example, int(4.6) is 4
Integer rounds up. It is a class.
Example, Integer(4.3) is equal to 5