Find Lcm of two numbers using java

Question

take two numbers has input

Answer 1

If you know how to find GCD of two numbers a, b, LCM can be found by (a*b)/GCD(a,b)

Answer 2

I want without gcd

Answer 3

Take maximum of the two numbers and continue producing the multiples of this number until it is also the multiple of smaller number.
Or there is another tedious method of finding prime factors of both numbers and union them. product of all union numbers gives you LCM.