What is JVM Shutdownhook
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What is JVM Shutdownhook
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Top 20 Java Interview Questions and Answers :
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1. What is the difference between C++ and Java ?
2. Why Java is Platform Independent ? [i.e Write once and Run anywhere ]
3. Is Java Object Oriented Programming Language ? How ?
4. What is JVM ?
5. What is Java ByteCode ?
6. What is the difference between "Abstract class" and "Interface" ?
7. What is use of "Garbage collector in Java" ? Explain ?
8. What is the benefit of "finalize" method ?
9. What are the difference type of "Collections" available in Java ? When to use what ?
10.What is the difference between "Comparator" and "Comparable" Interface ?
11.Why "Strings" are immutable ? what is the advantage ?
12.Is Java ,"Pass-by-Value" or "Pass-by-Reference" ?
13.Explain "static" keyword ? Difference between instance variables / methods and static variables / methods ?
14.Explain "Exception" in Java ?
15.What is the use of "finally" block in Java ? Explain ?
16.What is "serialization" ? How it is done in Java ?
17.What is "transient" variable ?
18.Explain polymorphism ,encapsulation ,inheritance in Java ?
19.What is the difference between "StringBuffer" and "StringBuilder" ?
20.Explain "Class loading" in Java ?
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12 سال پیش
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