- Aternary
- Bunary
- Clogical
- Drelational
Inheritance in Java (IS-A) - Quiz
- Anext()
- BnextLine()
- CNext()
- DnextString()
- Aextends
- Bexport
- Cimport
- Dpackage
- A16.0
- B16
- C4.0
- D5.0
- Acontinue
- Bbreak
- Creturn
- DSystem.exit(0)
- Afinite
- Binfinite
- Cnull
- Dfixed
- Achar check()
- Bvoid check (int x)
- C check (int x)
- Dchar check (int x)
- A super
- B this
- C extends
- D implements
- A Object
- B Class
- C Parent
- D Base
- A this
- B parent
- C extends
- D super
Results:
🟢 Correct Answers: 🔴 Wrong Answers:
🟢 Correct Answers: 🔴 Wrong Answers:
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Quiz Analytics
Inheritance in Java (IS-A) - Quiz
Guest User
Time Taken: Questions: Answered: Not Answered:
Correct Answer:
Wrong Answer:
Percentage: %
- A. ternary
- B. unary
- C. logical
- D. relational
Remarks:
Explanation: logical
- A. next()
- B. nextLine()
- C. Next()
- D. nextString()
Remarks:
Explanation: nextLine()
- A. extends
- B. export
- C. import
- D. package
Remarks:
Explanation:
import
- A. 16.0
- B. 16
- C. 4.0
- D. 5.0
Remarks:
Explanation: 4.0
- A. continue
- B. break
- C. return
- D. System.exit(0)
Remarks:
Explanation: break
- A. finite
- B. infinite
- C. null
- D. fixed
Remarks:
Explanation:
The given program segment is a finite loop. The loop will iterate as long as the condition i != 0 is true. The loop variable i starts at 5, and it decreases by 2 in each iteration (i -= 2). The loop will continue until i becomes 0 or less, at which point the condition becomes false, and the loop exits.
So, the correct answer is:
(a) finite
- A. char check()
- B. void check (int x)
- C. check (int x)
- D. char check (int x)
Remarks:
Explanation: char check (int x)
- A. super
- B. this
- C. extends
- D. implements
Remarks:
Explanation:
In Java, the extends keyword is used to indicate that one class is inheriting the properties and methods of another class. For example, public class SubClass extends SuperClass shows that SubClass inherits from SuperClass. Inheritance allows a class to use methods and fields from another class, promoting code reuse and logical hierarchies in object-oriented programming. This structure facilitates polymorphism and method overriding, which are essential features of Java's object-oriented paradigm. The implements keyword, on the other hand, is used when a class wants to implement an interface. super is used to refer to the immediate superclass, and this refers to the current instance of the class.
- A. Object
- B. Class
- C. Parent
- D. Base
Remarks:
Explanation:
In Java, Object is the superclass of all other classes. Every class in Java, either directly or indirectly, inherits from the Object class. This means that methods defined in the Object class, such as toString(), hashCode(), and equals(), are available to all Java classes. This inheritance forms the root of Java's class hierarchy, providing fundamental behavior that all Java objects share. Understanding this concept is crucial for utilizing polymorphism and implementing custom behavior in subclasses.
- A. this
- B. parent
- C. extends
- D. super
Remarks:
Explanation:
In Java, the super keyword is used to refer to the immediate parent class. When used in a constructor, super() calls the constructor of the parent class. This is essential when the superclass has a parameterized constructor or when you want to ensure that the parent class's initialization logic runs before the subclass's logic. The super keyword can also be used to access methods and variables of the parent class that might be overridden in the subclass.