What is the Difference Between static and final

The main difference between a static and final keyword is that static is keyword is used to define the class member that can be used independently of any object of that class. Final keyword is used to declare, a constant variable, a method which can not be overridden and a class that can not be inherited.

What is the difference between static and final variables?

static means there is only one copy of the variable in memory shared by all instances of the class. The final keyword just means the value can't be changed. Without final , any object can change the value of the variable.

Are static variables final?

Static variables are stored in the static memory, mostly declared as final and used as either public or private constants. Static variables are created when the program starts and destroyed when the program stops. Visibility is similar to instance variables.

Can static method be final?

Static methods cannot be overridden but they can be hidden. The ts() method of B is not overriding(not subject to polymorphism) the ts() of A but it will hide it. ... The keyword final will disable the method from being hidden. So they cannot be hidden and an attempt to do so will result in a compiler error.

What does final static mean in Java?

final means that the variable cannot be reassigned - i.e. this is the only value it can have. static means that the same value is accessible from each instance of the class (it also means it can be accessed even without an instance of the class where it is declared)

Why we Cannot override static method?

Overloading is the mechanism of binding the method call with the method body dynamically based on the parameters passed to the method call. Static methods are bonded at compile time using static binding. Therefore, we cannot override static methods in Java.

Can a constructor be final?

No, a constructor can't be made final. A final method cannot be overridden by any subclasses. ... But, in inheritance sub class inherits the members of a super class except constructors. In other words, constructors cannot be inherited in Java therefore, there is no need to write final before constructors.

What is the static?

pertaining to or characterized by a fixed or stationary condition. showing little or no change: a static concept; a static relationship. lacking movement, development, or vitality: The novel was marred by static characterizations, especially in its central figures.

What is static variable with example?

The static variable can be used to refer to the common property of all objects (which is not unique for each object), for example, the company name of employees, college name of students, etc. The static variable gets memory only once in the class area at the time of class loading.

What is use of static final variable?

Declaring variables only as static can lead to change in their values by one or more instances of a class in which it is declared. Declaring them as static final will help you to create a CONSTANT. Only one copy of variable exists which can't be reinitialize.

Which method Cannot be overridden?

A method declared final cannot be overridden. A method declared static cannot be overridden but can be re-declared. If a method cannot be inherited, then it cannot be overridden. A subclass within the same package as the instance's superclass can override any superclass method that is not declared private or final.

Can Final static methods be overridden?

Can we override a static method? No, we cannot override static methods because method overriding is based on dynamic binding at runtime and the static methods are bonded using static binding at compile time. So, we cannot override static methods.

Can final static method be overloaded?

The answer is, No, you can not override static method in Java, though you can declare a method with the same signature in a subclass. ... As per Java coding convention, static methods should be accessed by class name rather than an object. In short, a static method can be overloaded, but can not be overridden in Java.

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