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Core Java Interview Questions
Questions Answers Views Company eMail

what are the differences between java and .net?..why u choose java?

1 3402

where exactly collections are usefull in realtime

2 8627

What is the use of static import ?

Rolta,

4 7105

whar are the draw backs of programming lang step by step in Clang and next in C++ and next and in Java nad in .Net

1150

Write a program that takes a 5 digit number and calculates 2 power that number and prints it.

1 2915

what is default layout of JFrame class?

6 21933

as we know a static method could access static data and static method only. then how could main method call the object of aclass which is not static and other non static data

1 2286

Difference between Encapsulation and Abstraction

Fidelity,

4 8482

What is aggregation and composition ?

Fidelity,

1 5053

Can we add default constructor to Servlet?

Fidelity,

1 5379

How do u pass data from one jsp to another jsp?

Fidelity,

3 12917

what is the meaning of java.lang and java.util

6 31699

if a java file without any source code is valid java file?

SparkTG,

3 7439

why string is not taking as primitive datatypes but we r taking it as a class? why explain it?

HP, SparkTG,

2 4332

What is the difference between the synchronized() & static synchronized()?

HP, SparkTG,

2 6648


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Un-Answered Questions { Core Java }

Are true and false keywords?

153


What is difference between fileinputstream and filereader in java?

133


Can we create more than one object singleton class?

114


What is a subsequence of a string?

109


What is volatile data type?

106






What is a nested class?

143


What does 0 mean in boolean?

113


What is time complexity java?

104


What is the difference between the reader/writer class hierarchy and the inputstream/outputstream class hierarchy in java programming?

145


What is tochararray in java?

100


What is the java reflection api? Why it’s so important to have?

137


What is singleton class in ruby?

112


What is the use of conditional statement?

123


Can inner class have constructor?

106


What is the use of parseint in java?

114