Java Online OOPS Quiz-Test your knowledge total-qa February 27, 2018 March 5, 2018 5 Comments on Java Online OOPS Quiz-Test your knowledge Reference URL’s Java Platform Standard Edition 8 Documentation Complete List of Java Basics Please enter your email: 1. What is the superclass for all the Exceptions and Errors in Java? Compile Time Exception RunTime Exception Throwable Exception 2. final variables are constants. Yes No final variables are constants once assign. It cannot be reassigned. 3. The Common behavior of SuperClass is inherited to SubClass using the keyword__?? extends follows implements override 4. An Object state is stored in methods. False True 5. A collection of methods with no implementation is an__? Polymorphism Interface Exception Inheritance 6. Hiding internal data from the outside world, and accessing it only through publicly exposed methods is known as ___? Interface Encapsulation Polymorphism Inheritance 7. final methods cannot be overriden. No Yes If we want to avoid any method to override add keyword final. 8. final classes cannot be extended. No Yes final Classes cannot be extended in java. Example: String,System,Math 9. Real Objects contain State and Behavior. True False 10. An Object behavior is exposed through fields. True False 11. Can we override static methods in JAVA? Yes No Maintaining the same method in the SuperClass and SubClass with same return type is known as overriding. Overriding is applicable to non-static members of the class. Overriding is not applicable to static members of the class. 12. The term API stands for __? Application Programming Interface App Programming Interface Application Point Interface Application Programming Inheritance 13. Can we Create Abstract Class with out any abstract methods? Yes No Abstract Class can be created without any abstract methods. But if the class contains one abstract methods class would be abstract. 14. How to fetch the current time in Milliseconds? System.getTime() System.getDate() System.getTime() System.currentTimeMillis() 15. What is the default value of boolean? true false Loading …
karunanidhi Ethiraj August 29, 2018 at 2:54 pm ITs really super site to recall our technical concepts in java Reply ↓
harshali October 21, 2018 at 10:57 am . Can we Create Abstract Class with out any abstract methods? No Yes Abstract Class can be created without any abstract methods. But if the class contains one abstract methods class would be abstract. No meaning of above statement If any class containes method which is abstract then that class has to be abstract. Reply ↓
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ITs really super site to recall our technical concepts in java
. Can we Create Abstract Class with out any abstract methods?
No
Yes
Abstract Class can be created without any abstract methods.
But if the class contains one abstract methods class would be abstract.
No meaning of above statement
If any class containes method which is abstract then that class has to be abstract.