java - Does compareTo work with double type? -

i need make program uses compareto, i'm running issues it.

double sides1 = 1.0; double sides2 = 1.3; int compared = sides1.compareto(sides2); 

i run error says

cannot invoke compareto(double) on primitive type double 

what doing wrong, , how fix it?

you cannot call methods on primitive values such doubles. can call double.compare, compare 2 primitive doubles you.

int compared = double.compare(sides1, sides2); 

you can compare primitive double values directly comparison operators ==, !=, <, <=, > , >=.