Can anyone help me understand this joke?

Question

Java and C were telling jokes. It was C's turn, so he writes something on the wall, points to it and says 'Do you get the reference?' but Java didn't.

Answer 1

Java.. in a way....doesn't support pointers while C does...

Answer 2

oh ya 'reference'

Answer 3

At this time I was doing just like Java😅

Answer 4

for me i didn't understand