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Hence the reverse is partly true. Private members of a class are accessible only within the class and by friends of the class. On social networking if you are sharing stuff of this site or documents then you have to questipns back to us with sharing our link. Objects of the given class potentially posses all the characteristics belonging to objects of the super-class.

However, that’s not what the program prints and that’s why this question is tricky. Javin Paul October 13, at 5: All they could say is, since some floating point numbers cannot be represented precisely in Java, hence 0. This is called method hiding and its indeed one of the tricky Java question.

Employee is derived from Person. Znd simple answer is that a virtual destructor is one that is declared with the virtual attribute. Pass by value and pass by reference intwrview also a good tricky Java question. Polymorphism refers to the ability to have more ;df one method with the same signature in an inheritance hierarchy.

Computation occurs though the intercommunication of objects.

Templates solved that problem. When is a template a better solution than a base class? You won’t find these questions even on popular Java interview books like Java Programming Interview doenloadwhich is nevertheless an excellent guide for Java interviews. The form of the message its protocol is identical in both cases. In method hiding method resolution is always based on reference type so it will print Collection.

An object is a package that contains related data and instructions. If you are going to instantiate an array of objects of the class, the class annd have a default constructor. Those constructs are not particularly intuitive. Hi Is the line in codes correct.

These solutions were unwieldy and error-prone. After completion of below form downloading status will be change automatically after few seconds so don’t go away or close this page until you got the message of successful completion of your request.

See StringBuilder vs StringBuffer for more differences.

Example 1 a uses the traditional C notation, while Example 1 b uses constructor notation. I am sure you will downllad them challenging enough.

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Both idioms return a program from the nested depths of multiple function calls to a defined position higher in the program. What is a class? The answer can get complicated. I remember reading about it on Java concurrency in Practice, which says that a volatile write will happen before volatile read. Is there a System. It is called “JavaSucks” sorry and its content says it all: What is multiple inheritance? The rule that maps each Unicode character into a byte array is called a character encoding.

Jake Beasley July 5, at What is operator overloading?

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Most important thing to answer a tricky Java question is attitude and analytical thinking, which helps even if you don’t know the answer. I should also mention that you shouldn’t cast to Employee without knowing it’s an Employee via instanceof, or just using Comparable generic interface.

Next the dialog is written so that the personalities interact. The behavior of a virtual destructor is what is important.

The only differences are that a struct defaults to public member access and public base class inheritance, and a class defaults to the private access specifier and private base class inheritance. Anonymous July 18, at 4: It’s a good indicator of candidate’s anzwers and thorough understanding but as you said, don’t expect every Java developer knows these subtle details.

This is one more reason why you should use instanceof instead of getClass while overriding equals mehtod, otherwise equals will return false even if object are same but classloader is different. Thanks for sharing these. Copyright by Interview Questions Answers.

A good programmer will insist that the statement is never to be used if the class is to be used by other programmers and instantiated as static, extern, or automatic objects. The programmer qufstions change the internal workings of an object but this transparent to other interfacing programs as long as the interface remains unchanged.

Entry object, which contains both Key and Value. Anonymous September 30, at One of the most tricky questions, I have face in a Java interview was, Does two object will always be equal, when an compareTo method returns zero?