What is the collections api in java programming?
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What is the main purpose of java?
What is the covariant return type?
1.IN CASE OF DYNAMIC METHOD DISPATCH WHY WE USE REFERENCE VARIABLE,WE CAN USE THE DIFFERENT DEFINED OBJECT DIRECTLY TO ACCESS THE DATA MEMBER AND MEMBER FUNCTION OF THAT RESPECTIVE CLASS?WHAT IS THE MAIN FUNCTION OF "REFERENCE VARIABLE" HERE?
we know that every java prog must follows OOPS Principles. Anybody can answer, HOW THE FOLLOWING PROGRAM FOLLOWS OOPS CONCEPTS i.e, Inheritance,Polymarphism,Encapsulation? class a{ public static void main(String args[]){ System.out.println("Hello World"); } }
What is the difference between jdk and jre?
Can we declare Pointer in Java?
What is null data type?
What is a qms manual?
What do you mean by an object in java?
Can we use switch statement with strings?
What is the difference between Java and C++?
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Can an unreferenced object be referenced again?