As a domain expert in computer science, particularly in the area of object-oriented programming, I'm well-versed in the concept of polymorphism. Polymorphism is a fundamental concept in object-oriented programming, allowing objects to be treated as instances of their parent class rather than their actual class. It is a powerful feature that enables code reusability and flexibility. Now, let's delve into the two types of polymorphism.

Compile-time polymorphism, also known as static or early binding, occurs when the method that is invoked is determined at compile time. This type of polymorphism is achieved through method overloading. Method overloading is a feature that allows a class to have multiple methods with the same name but different parameters (either different types, number of parameters, or both). The compiler determines which method to call based on the method signature, which includes the method name and the parameter list. This decision is made without executing the program, hence the term "compile time."

Runtime polymorphism, on the other hand, is also known as dynamic or late binding. It is a more complex form of polymorphism that involves method overriding. In this case, a subclass provides a specific implementation for a method that is already defined in its superclass. The decision about which method to call is made at runtime, based on the object's runtime type. This means that even if the method call is made using a reference of the superclass type, the actual method that gets executed is determined by the actual object's class, which is known only at runtime.

It's important to note that compile-time polymorphism is achieved through static binding, which is the process of determining the method to be called based on the static type of the object, while runtime polymorphism is achieved through dynamic binding, which is the process of determining the method to be called based on the actual object's type at runtime.

The distinction between these two types of polymorphism is crucial for understanding how programs can be designed to be more modular and how they can handle different types of objects in a uniform way. Compile-time polymorphism is more about providing multiple ways to perform a similar task with different parameters, while runtime polymorphism is about allowing subclasses to provide specific behaviors for inherited methods.

Now, let's move on to the translation of the above explanation into Chinese.

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Polymorphism in Java has two types: Compile time polymorphism (static binding) and Runtime polymorphism (dynamic binding). Method overloading is an example of static polymorphism, while method overriding is an example of dynamic polymorphism.Jan 15, 2013read more >>