a2zinterviews

1.	What is object oriented programming?
	It is a problem solving technique to develop software systems. It is a technique to think real world in terms of objects. Object maps the software model to real world concept. These objects have responsibilities and provide services to application or other objects.
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2.	What are different properties provided by object oriented systems?
	Abstraction Encapsulation Communication Object lifetime Inheritance Aggregation Association Polymorphism
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3.	What are the major differences between C++ and Java?
	Java does not support pointers. Java does not include structures or unions. Java does not support operator overloading. Java does not perform any automatic type conversions that results in a loss of precision. All the code in a Java Program is encapsulated within one or more classes. Java does not support multiple inheritance. Java does not have destructors. Java does not support typedef. It is not possible to declare unsigned integers in Java. In Java, objects are passed by reference only. In C++, objects may be passed by value or reference.
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4.	What is the relation between classes and objects?
	Class is a definition, while object is instance of the class created. Class is a blue print while objects are actual objects existing in real world.
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