For centuries, mankind knew all there was to know about the shape of the Earth. It was a flat planet, shaped roughly like a circle, with lots of pointy things hanging down from the underside. On the comparatively smooth topside, Europe sat in the middle of the circle, with the other continents scattered about the fringes, and parts of Africa hanging over the edge.
Immutability. Immutability means unchangeable. It is the divine attribute of unchangeableness. God said in Exodus 3:14, I AM that I AM, signifying His eternal sameness and His sovereignty.He cannot change His moral character, His love, His omniscience, omnipresence, omnipotence, etc.t is the divine attribute of unchangeableness. God said in Exodus 3:14, I AM that I AM, signifying His eternal sameness and His sovereignty. He cannot change His moral character, His love, His omniscience, omnipresence, omnipotence, etc.
An immutable class is simply a class whose instances cannot be modified. All information in an instance is initialized when the instance is created and the information can not be modified. There are many advantages of immutable classes. This article summarizes why String is designed to be immutable.