Check if a number is a double or an int

Question

I am trying to beautify a program by displaying 1.2 if it is 1.2 and 1 if it is 1 problem is I have stored the numbers into the arraylist as doubles. How can I check if a Number

Answer 1

Another simple & intuitive solution using the modulus operator (%)

if (x % 1 == 0)  // true: it's an integer, false: it's not an integer