Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

What is Restrictions in hibernate?

Bally Technologies,

1 5801

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

EDS, Matrix,

8 24650

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 8406

which methods consisting of the serilizable interface?

3 6561

What is OOP?

BMC, Microsoft,

2 6076

What is encapsulation? Elaborate with example?

BMC,

1 8580

What is data abstraction? Elaborate with example?

BMC, TCS,

4 36929

What is casting?

BMC,

3 6654

What is thread?

BMC, Virtusa,

7 10616

What is advantage of using threads?

BMC,

2 11127

How the threads are synchronized?

BMC, CTS,

2 6158

What is Interface?

BMC,

8 11922

Do you know thread pools?

BMC,

2201

How multi processing is achieved in JAVA?

BMC,

5 22278

What is hash method?

1 4361

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Un-Answered Questions { Core Java }

What is the meaning of 3 dots in java?

1166

What does regex mean?

1016

Explain the difference between comparator and comparable in java?

963

Can classes declared using the abstract keyword cab be instantiated?

1050

What is mnemonic code?

1022

What is the formula to calculate percentage?

1018

What all methods are used to prevent thread execution ?

1035

What is appletviewer?

1037

What is the purpose of methodology?

1082

What is treeset in java?

1007

What is output buffer?

1055

What is use of inner class in java?

1153

Is singleton a bad practice?

1050

How does a cookie work in Servlets?

847

Is linked list a linear or non-linear data structure?

973

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