The abstract keyword is used to achieve abstraction in Java. It is a non-access modifier which is used to create abstract class and method.
What is abstract in Java Mcq?
Explanation: An abstract method is a method that is declared without an implementation (without braces, and followed by a semicolon). Derived classes that extend an abstract class with abstract methods must provide an implementation for those methods.
What is difference between abstract class and interface Mcq?
An interface can only declare methods and properties; But an Abstract class in addition to them can have methods and properties with full code.
How many abstract methods should an abstract class have Mcq?
Abstract class needs to have at least one method that is abstract.
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Abstraction in Java - The ULTIMATE Tutorial (PDF Download)
