Which of the following is true about the interface?
An interface cannot have instance variables is true about interfaces. Explanation: An interface is similar to a class, but the main difference is that it can have only declaration and the implementation of the functions and procedures will be given by the class which is implementing the interface.
Which statement about methods in an interface is true quizlet?
The parameters of a method in the interface. Which statement about methods in an interface is true? All methods in an interface are automatically public.
Which of the following is true about Java interfaces?
Which of the following is true about interfaces in java. 1) An interface can contain following type of members. ….public, static, final fields (i.e., constants) …. default and static methods with bodies 2) An instance of interface can be created. 3) A class can implement multiple interfaces.
Which of the following statement is true about a marker interface?
Marker interfaces are also known as the Tag interface. It is used to tell the JVM or compiler that the particular class has special behavior. Hence, the correct answer is option (b).
Which of the following is true about interface types and abstract classes?
Which of the following is true about interface types and abstract classes? An interface type cannot have instance variables whereas an abstract class can.
Do interfaces have methods?
Like a class, an interface can have methods and variables, but the methods declared in an interface are by default abstract (only method signature, no body). Interfaces specify what a class must do and not how. It is the blueprint of the class.
Which statement is true about interfaces Mcq?
The only true statement is C), All methods defined in an interface must be implemented when used by another class.
Which statement is true about interfaces interfaces allow multiple implementation inheritance?
(b) and (c) • Interface declarations do not provide any method implementations and only permit multiple interface inheritance. An interface can extend any number of interfaces and can be extended by any number of interfaces. Fields in interfaces are always static, and can be declared static explicitly.
Which statement is true about interfaces the keyword extends?
The keyword extends is used when an interface inherits from another interface or a class inherits from another class. 113.
Which statement is true about accessibility of members?
Which statement is true about accessibility of members? Package/default accessibility for a member can be declared using the keyword default.
Which is false statement about an interface in Java?
Q) False statement about Java interface
It is used to achieve abstraction and multiple inheritance in Java. It can be instantiated, means, we can create an object of an interface. There can be only abstract methods in the interface not method body.
Which of the following statement is true about Java?
The correct answer to the question “Which statement is true about Java” is, option (a). Platform independent programming language. As we already know that Java is a platform-independent language, which functions on a set principle “compile once, and run everywhere”.
Which of the following statement is true a public member is accessible wherever?
Explanation: The public members can be accessed anywhere in the program using the object of the class. And if object pointer is used, then arrow operator is used to access class members.
What is true about DO statement?
What is true about do statement? Explanation: Do statement checks the condition at the end of the loop. Hence, code gets executed at least once. … Explanation: Break is used with a switch statement to shift control out of switch.
Which of the following is true about public access modifier?
Q 8 – Which of the following is true about public access modifier? A – Variables, methods and constructors which are declared public can be accessed by any class. … C – Variables, methods and constructors which are declared public in the superclass can be accessed only by its child class.
Which of the following about final class is true?
What is true of final class? Explanation: Final class cannot be inherited. … Explanation: Only one copy of static variables are created when a class is loaded. Each object instantiated has its own copy of instance variables.
Which among the following is true private member functions?
Which among the following is true? Explanation: The private members are accessible within the class. … Explanation: The function declaration must contain private keyword follower by the return type and function name. Private keyword is followed by normal function declaration.
What is true about member functions Mcq?
Explanation: A member function of a class can only have the access to the members of its own class and parent classes if inheritance used. Otherwise a member function can never access the members of a subclass. Accessing static members of a class is possible by normal and static member functions.
Which of the following statement is true about abstract class?
Solution(By Examveda Team)
Abstract classes are classes that contain one or more abstract methods. An abstract method is a method that is declared, but contains no implementation. Abstract classes may not be instantiated, and require subclasses to provide implementations for the abstract methods.
What is true about method local inner class?
It can be marked public. It can be marked static. Explanation: Option B is correct because a method-local inner class can be abstract, although it means a subclass of the inner class must be created if the abstract class is to be used (so an abstract method-local inner class is probably not useful).
Which of the following is an interface in Java util package?
Package java. util
| Interface | Description |
|---|---|
| Deque<E> | A linear collection that supports element insertion and removal at both ends. |
| Enumeration<E> | An object that implements the Enumeration interface generates a series of elements, one at a time. |
| EventListener | A tagging interface that all event listener interfaces must extend. |
Which of the following is not true about abstract class?
Which of these is not a correct statement? Explanation: Abstract class cannot be directly initiated with new operator, Since abstract class does not contain any definition of implementation it is not possible to create an abstract object.