- 1 What does it mean by static in Java?
- 2 What is static purpose?
- 3 What is difference between final and static?
- 4 Can we override static method?
- 5 Why we Cannot override static method?
- 6 What is the static?
- 7 Can a class be static?
- 8 Can static be final?
- 9 Can a constructor be final?
- 10 Can we inherit static method in Java?
- 11 Can we override main method?
- 12 Can we override private method?
- 13 Which method Cannot be overridden?
What does it mean by static in Java?
When a member is declared static, it can be accessed before any objects of its class are created, and without reference to any object. For example, in below java program, we are accessing static method m1() without creating any object of Test class.
What is static purpose?
The purpose of the static keyword is to be able to use a member without creating an instance of the class. This is what happens here; all the methods (including the private ones) are invoked without creating an instance of SimpleTest.
What is difference between final and static?
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.
Can we override static method?
Can we Override static methods in java? We can declare static methods with the same signature in the subclass, but it is not considered overriding as there won’t be any run-time polymorphism. Hence the answer is ‘No’.
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.
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.
Can a class be static?
A class can be declared static only if it is a nested class. It does not require any reference of the outer class. The property of the static class is that it does not allows us to access the non- static members of the outer class.
Can static be final?
Constant variables never change from their initial value. Static variables are stored in the static memory, mostly declared as final and used as either public or private constants.
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.
Can we inherit static method in Java?
Static methods are inherited in Java but they don’t take part in polymorphism. If we attempt to override the static methods they will just hide the superclass static methods instead of overriding them. Static method is inherited in subclass but it is not polymorphism.
Can we override main method?
No, we cannot override main method of java because a static method cannot be overridden. The static method in java is associated with class whereas the non-static method is associated with an object. Therefore, it is not possible to override the main method in java.
Can we override private method?
No, we cannot override private or static methods in Java. Private methods in Java are not visible to any other class which limits their scope to the class in which they are declared.
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.