Question

Here’s a line from a large Java program which compiles without errors. I’m unable to understand how the <= operator is being used on the right side of assignment statement:

converged = measure.distance(centroid.getLengthSquared(), centroid, getCenter()) <= convergenceDelta;

Is this some obscure Java feature?

Answer 1

No, it’s not.

As you will see converged will be of boolean type.

It will be exactly the same as saying

boolean foo = 2 <= 3;

So, probably in your code measure.distance(centroid.getLengthSquared(), centroid, getCenter()) returns a number which is then compared using the relational <= operator
with convergenceDelta;. The result will be true or false, a boolean value which will
be saved at converged.