How do you sum the same numbers from two different groups of numbers in a java program?

Question

For example:
A: 2, 4, 6, 8, 10, 12, 14, 16, 18.
B: 3, 6, 9, 12, 15, 18, 21.

the same numbers: 6, 12, 18.
sum: 6 + 12 + 18 = 36

I've tried this, but don't know what to do next.
https://code.sololearn.com/cRrwX2NqpSqG/?ref=app

Thanks in advance.

Answer 1

Thanks so much. It works! 😊

BTW, why isn't there any {} between "for" and "if" in your code?
Mine is:

for () {
if () {
statement
}
}

but yours is:

for ()
if () {
statement
}

They both work. Is there any reason?

Answer 2

Could you please show me how to write the code?
I don't get it. Sorry.