Binding is a mechanism that connects the call to a method with the actual implementation of the method. An object can take on a variety of forms according to the polymorphism concept in Java. Both at compile time and during runtime, object forms can be resolved. Static binding or dynamic binding are terms used depending on whether the linking between a method call and its implementation is resolved at compile time or at run time. While static binding uses a class's type and fields, dynamic binding uses objects to resolve binding.
Static binding is used for private, final, and static members (methods and variables), whereas run-time binding is used for virtual methods (Java methods are virtual by default).
While dynamic binding resolves to bind using objects, static binding uses type information to do so.
While overridden methods use dynamic binding, which occurs at run time, overloaded methods use static binding to resolve (choose which method to call when there are multiple methods with the same name).
Every variable has a type; these types range from primitive to non-primitive.
Syntax
int Score=30;
Every variable has a type; these types range from primitive to non-primitive.
Syntax
class Exam{
public static void main(String args[]){
Exam exam; //Here exam is a type of Exam
}
}
An object is an instance of one or more Java classes, as well as an instance of those classes' superclasses.
Syntax
class FinalExam{}
class Exam{
public static void main(String args[]){
Exam exam;//Here exam is a type of Exam
}
}
Static binding occurs when the type of the object is established at the time of compilation (by the compiler).
There is static binding if a class contains any private, final, or static methods.
// Java static binding example
class Shape{ void draw(){ System.out.println("Drawing...Shape"); } } class DockerTpoint{ public static void main(String args[]){ Shape shape=new Shape(); shape.draw(); } }
Output:
Drawing...Shape
In dynamic binding, the method to be called is not chosen by the compiler. Dynamic binding is perfectly illustrated by overriding. Both parent and child classes use the same method for overriding.
class Shape{ void draw(){ System.out.println("Drawing "); } } class Rectangle extends Shape{ void draw(){ System.out.println("Rectangle"); } } class Circle extends Shape{ void draw(){ System.out.println("Circle "); } } class DockerTpoint{ public static void main(String args[]){ Shape shape; shape=new Rectangle(); shape.draw(); shape=new Circle(); shape.draw(); } }
Output:
Rectangle
Circle
Difference Between Static Binding and Dynamic Binding are mention below
| S.N | Static Binding | Dynamic Binding |
|---|---|---|
| 1. | Early binding refers to the process that occurs during compilation. | It is known as late binding because it happens during runtime. |
| 2. | More specifically, it employs the method overloading method. | Overriding methods are used. |
| 3. | It happens with regular operations. | It is carried out using virtual functions. |
| 4. | Static binding is never used on real objects. | Dynamic binding is used by real objects. |
| 5. | Static binding is used for private, final, and static methods and variables. | Dynamic binding is used by virtual methods. |
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