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 collections you have worked on? Internal working of Hashmap?

Bravura Solutions,

1 2908

What design pattern you have used in your project? I answered Factory pattern, how it is implemented? What are its advantage? Do know about Abstract Factory?

Bravura Solutions,

2550

Can static methods be overridden?

Bravura Solutions,

5 9985

java Api provided try catch finally ,try catch(its ok) but why try finally and exception occured at try then how the flow is?

Naaptol,

1 5148

Why java does not supports multiple inheritance?

TCS, VSoft,

3 6265

what is associative array

Tech Mentro,

1 3598

what is the difference between static class and singleton class? can we create static class?

L&T, Octazen, Vamsi Labs,

2 6366

ublic class Java_Coding_Samples { public static void JavaHungr(NumberFormatException ae){ System.out.println("integer"); } public static void JavaHungry(Exception e){ System.out.println("string"); } public static void JavaHungry(ArithmeticException ae){ System.out.println("object"); } public static void main(String[] args) { JavaHungry(null); }

1 2820

what is ABSTRACTION and what are using in real time project?

iGate,

1 4097

For technical interview question please sir send me because tomorrow my interview

FactSet Systems,

1 4763

How to define a constant variable in Java?

TCS,

1 3208

java is pure object-oriented programming language?why it is platform independent.

1 2924

Why should we use java?

IBM,

1 3124

How many Java environments are there?

Phantom Technologies,

1 3104

What is Java Classloader?

Phantom Technologies,

1 3009

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Un-Answered Questions { Core Java }

How will you add panel to a frame?

1165

What methodology can be utilized to link to a database?

1013

What does indexof mean?

1106

What is a nested structure?

1105

What is use of set in java?

1072

What does %4d mean in java?

1540

What is the benefit of inner / nested classes ?

1035

What is the difference between class & structure?

1317

Can we sort arraylist in java?

1044

Is null keyword in java?

1003

Is a char always 1 byte?

1048

Are true and false keywords?

1069

What is a dot notation?

1102

Is there any limitation of using inheritance?

1152

Can an interface extend another interface?

1109

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