double x = 0.5; double result = Math.atan(x); System.out.println(result); // prints 0.4636476090008061
double y = Math.sqrt(3); double x = 1; double result = Math.atan2(y, x); System.out.println(result); // prints 1.0471975511965976In this example, we use the Math.atan2 method to calculate the arctangent of the ratio of `y` to `x`. The values of `y` and `x` are first assigned, with `sqrt(3)` being the square root of 3. The result is then printed to the console. Overall, the java.util Math.atan method is used to calculate the arctangent of a given value in radians. Its package library is java.util.