What is java and why do we need it? Explain
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By what default value is an object reference declared as an instance variable?
List any five features of java?
What are exceptions
What is the difference between static synchronize() metod and synchronize() method?
How variables are declared?
What is a blocking method in Java?
Is java a pure object oriented language?
Can a constructor be made final?
What is "Java Native Interface" and how to use it?
Is java a software?
What are the five major types of reference sources?
Is it safe for adding 10,00,000 records/objects to HashMap?, i.e is it safe to add millions of objects to HashMap?