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. final methods cannot be overriden. Yes No If we want to avoid any method to override add keyword final. 2. Hiding internal data from the outside world, and accessing it only through publicly exposed methods is known as ___? Inheritance Encapsulation Polymorphism Interface 3. A collection of methods with no implementation is an__? Interface Inheritance Exception Polymorphism 4. final classes cannot be extended. Yes No final Classes cannot be extended in java. Example: String,System,Math 5. The Common behavior of SuperClass is inherited to SubClass using the keyword__?? override follows extends implements 6. How to fetch the current time in Milliseconds? System.getTime() System.getTime() System.currentTimeMillis() System.getDate() 7. An Object behavior is exposed through fields. True False 8. What is the default value of boolean? true false 9. An Object state is stored in methods. True False 10. 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. 11. What is the superclass for all the Exceptions and Errors in Java? Compile Time Exception RunTime Exception Exception Throwable 12. Can we override static methods in JAVA? No Yes 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. 13. final variables are constants. No Yes final variables are constants once assign. It cannot be reassigned. 14. Real Objects contain State and Behavior. False True 15. The term API stands for __? Application Programming Interface App Programming Interface Application Programming Inheritance Application Point Interface 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.