JAVA
November 29, 2023OOPS
November 29, 2023OOPS
| Question 87 |
In Java, which of the following statements is/are True ?
- S1 : The ‘final’ keyword applied to a class definition prevents the class from being extended through derivation.
S2 : A class can only inherit one class but can implement multiple interfaces.
S3 : Java permits a class to replace the implementation of a method that it has inherited. It is called method overloading.
Code :
| S1 and S2 only | |
| S1 and S3 only | |
| S2 and S3 only | |
| All of S1, S2 and S3
|
Question 87 Explanation:
• If a class has multiple methods having same name but different in parameters, it is known as Method Overloading.Method Overloading is a feature that allows a class to have more than one method having the same name, if their argument lists are different. So the option-3 is False.
• The final keyword in java is used to restrict the user. The java final keyword can be used in many context. Final can be: variable, method and class.
• A Java class can only extend one parent class. Multiple inheritance (extends) is not allowed. Interfaces are not classes. However, and a class can implement more than one interface.
• The final keyword in java is used to restrict the user. The java final keyword can be used in many context. Final can be: variable, method and class.
• A Java class can only extend one parent class. Multiple inheritance (extends) is not allowed. Interfaces are not classes. However, and a class can implement more than one interface.
Correct Answer: A
Question 87 Explanation:
• If a class has multiple methods having same name but different in parameters, it is known as Method Overloading.Method Overloading is a feature that allows a class to have more than one method having the same name, if their argument lists are different. So the option-3 is False.
• The final keyword in java is used to restrict the user. The java final keyword can be used in many context. Final can be: variable, method and class.
• A Java class can only extend one parent class. Multiple inheritance (extends) is not allowed. Interfaces are not classes. However, and a class can implement more than one interface.
• The final keyword in java is used to restrict the user. The java final keyword can be used in many context. Final can be: variable, method and class.
• A Java class can only extend one parent class. Multiple inheritance (extends) is not allowed. Interfaces are not classes. However, and a class can implement more than one interface.