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Core Java Interview Questions
Questions Answers Views Company eMail

What is Restrictions in hibernate?

Bally Technologies,

1 4230

What is the difference between array and arraylist? what is the difference between arraylist and linkedlist?

EDS, Matrix,

8 19663

Does a class inherit the constructor of its super class?if it does, how can you hide that constructor? if it doesnot how can you call it from the sub class?

2 6524

which methods consisting of the serilizable interface?

3 4126

What is OOP?

BMC, Microsoft,

2 3905

What is encapsulation? Elaborate with example?

BMC,

1 6992

What is data abstraction? Elaborate with example?

BMC, TCS,

4 33682

What is casting?

BMC,

3 4311

What is thread?

BMC, Virtusa,

7 5893

What is advantage of using threads?

BMC,

2 9064

How the threads are synchronized?

BMC, CTS,

2 3842

What is Interface?

BMC,

8 7058

Do you know thread pools?

BMC,

1275

How multi processing is achieved in JAVA?

BMC,

5 18860

What is hash method?

1 3026


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Un-Answered Questions { Core Java }

What is use of static method?

142


What is nextint java?

142


What are the disadvantages of using inner classes?

162


What an i/o filter?

177


What is the difference between ArrayList and Vector? which one is better in Java

218






Difference between arraylist and hashset in java?

177


What do you understand by java virtual machine?

205


Can we write a class without main method in java?

133


what is collatration?

2169


In java, how many ways you can take input from the console?

180


Why is the main method static?

180


What are advantages of using Java?s layout managers than windowing systems?

1478


Can a class extend more than one class?

175


Why do we need array in java?

130


Can you use this() and super() both in a constructor?

174