Convert from Radians to Degrees in Java

Question

I\'m trying to get the alpha angle in degrees from x,y when user creates an object.

I wrote the following constructor:

public class Point
{
    priva         


        

Answer 1

Why not use the built-in method Math.toDegrees(), it comes with the Java SE.

Answer 2

The idea looks ok, but I would suggest using Math.atan2 instead of Math.atan.

Answer 3

This should be by far the shortest and simplest way:

        _radius = Math.hypot(x, y);
        _alpha = Math.toDegrees(Math.atan2(y, x));

Keep in mind that when computed this way, _alpha will have values between -180 and 180 degrees.