Question

Hey guys what are some constraints in naming a variable in Java?

Answer 1

@kx2bay @ganeshie8

Answer 2

can contain only letters, underscores, numbers and $. must start with a letter. can't be one of the reserved keywords (while, break, if, etc) but could be whileMad. that's all i can remember off the top of my head...

Answer 3

You remembered it pretty well. Here is the authority and other than some conventions, it agrees:
http://docs.oracle.com/javase/tutorial/java/nutsandbolts/variables.html