قناة منهج كلية تقنية المعلومات |2005|

Which is true here?

Composition is a feature of java, not a design technique but we can achieve it using Java code.

The HAS-A relationship is based on ......., rather than ........ .

Aggregation and Association are the two forms of Composition

If a class is designed to be extended, it is better to provide a ....... constructor to avoid programming errors

The most common use of This keyword is to eliminate the confusion between superclasses and subclasses that have methods with the same name.

extends is the keyword used to inherit the properties of a class

A subclass can refer to private methods and fields of its superclass

Various types of inheritance are supported by java, which kind is not supported?

Hierarchies of object classes are more efficient than the same objects without a hierarchy

The relationship between the class and its superclass is known as the....

Encapsulation provides re-usability of code and can be used to add additional features to an exciting class, without modifying it.

If you make any variable as final, you can change the value of the final variable.

A field that is both static and final has only one piece of storage that cannot be changed.

A final variable that has no value is called a blank final variable or initialized final variable.

Java Final Keyword