Explanation: A variable can be declared final, doing so prevents its content from being modified.
What is the use of final keyword in Java?
What is the Final Keyword in Java? Java final keyword is a non-access specifier that is used to restrict a class, variable, and method. If we initialize a variable with the final keyword, then we cannot modify its value. If we declare a method as final, then it cannot be overridden by any subclasses.
What is use of final keyword in Java Mcq?
What is the use of final keyword in Java? When a class is made final, a sublcass of it can not be created. When a method is final, it can not be overridden. When a variable is final, it can be assigned value only once.
What are the 3 uses of final keyword in Java?
What are the uses of final keyword in Java? Final keyword in Java has three different uses: create constants, prevent inheritance and prevent methods from being overridden.
What is not the use of this keyword in Java Mcq?
What is not the use of “this” keyword in Java? Explanation: “this” is an important keyword in java. It helps to distinguish between local variable and variables passed in the method as parameters. 9.
What is the use of final?
In the Java programming language, the final keyword is used in several contexts to define an entity that can only be assigned once. Once a final variable has been assigned, it always contains the same value.
Can a constructor be final?
Constructors are used to initialize an object. … It is syntactically similar to a method but it has the same name as its class and a constructor does not have a return type. Java constructor can not be final. One of the important property of java constructor is that it can not be final.
What is keyword in Java Mcq?
Explanation: The final is a reserved keyword in Java that is used to make a variable, method, and class immutable. The important features of the final keyword are: Using the final keyword with a variable makes it constant or immutable.
What is the use of this keyword?
The this keyword refers to the current object in a method or constructor. The most common use of the this keyword is to eliminate the confusion between class attributes and parameters with the same name (because a class attribute is shadowed by a method or constructor parameter).
Can final method be overridden?
Can We Override a Final Method? No, the Methods that are declared as final cannot be Overridden or hidden.
What is a final method?
When a method is declared with final keyword, it is called a final method. A final method cannot be overridden. The Object class does this—a number of its methods are final.We must declare methods with final keyword for which we required to follow the same implementation throughout all the derived classes.
Can we inherit final method in Java?
No, we cannot override a final method in Java. The final modifier for finalizing the implementations of classes, methods, and variables. We can declare a method as final, once you declare a method final it cannot be overridden.
What is the use of final keyword give an example?
In Java, the final keyword is used to denote constants. It can be used with variables, methods, and classes. Once any entity (variable, method or class) is declared final , it can be assigned only once.