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Java Interview Questions and Answers

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Java Interview Questions & Answers


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Questions Question: When we are sending the serialized array object thro the network, what is being passed ? is the value or the reference ?
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Questions Question: What is the Difference between Design Pattern and Architecture?
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Questions Question: How do i upload a file from client side to server side using servlet and jsp this will happen when I click upload button on web-page?
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Questions Question: It is a saying that static methods in JAVA programs should be minimised. What is the reason for this? any problems arise or there is any performance measures to be looked into it.
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Questions Question: Give example of : High severity & Low priority
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Questions Question: What do you meant by private constructor? why somebody declare only private constructor?
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Questions Question: Is java a fully object oriented programming or not? if not why?
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Questions Question: What is the basic difference between Java and .Net
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Questions Question: What is the difference between an object and an instance? And give me a real time example to differentiate these two?
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Questions Question: How hashtable is synchronized?why hashmap is not synchronized?Can we make hashmap synchronized?
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Questions Question: Why java does not support Multiple Inheritance?
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Questions Question: Why java does not support Multiple Inheritance? Why java is not pure Object Oriented?
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Questions Question: Explain the importance of "static"keyword ?
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Questions Question: Whether a Class,Method can be garbage collected or not?How?
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Questions Question: Whether private,protected method can be overloaded,overrided or not?Tell me reason?
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Questions Question: Why ArrayList is faster than Vector?
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Questions Question: Meaning - Abstract classes, abstract methods
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