How to compare two double values in Java?

Question

A simple comparison of two double values in Java creates some problems. Let\'s consider the following simple code snippet in Java.

package doublecomparision;         


        

Answer 1

double a = 1.000001;
double b = 0.000001;

System.out.println( a.compareTo(b) );

Returns:

• -1 : 'a' is numerically less than 'b'.

• 0 : 'a' is equal to 'b'.

• 1 : 'a' is greater than 'b'.