What is coercion in Polymorphism

Question

Is it like implicit type conversion?

Answer 1

Polymorphic coercion deals with implicit type conversion done by the compiler to prevent type errors. A typical example is seen in an integer and string concatenation.

String str="string"=2;

Answer 2

Implicit type conversion is called coercion polymorphism. Assume that we have a function with argument int. If we call that function by passing a float value and if the the run-time is able to convert the type and use it accordingly then it is coercion polymorphism.

Now with this definition, let us see if Java has coercion polymorphism. The answer is half yes. Java supports widening type conversion and not narrowing conversions.