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

Core Java Interview Questions

Questions Answers Views Company eMail

Explain the meaning of java applet.

TCS,

1030

What is java Applet?

TCS,

1047

Tell me a few examples of final classes defined in Java API?

DELL,

1040

How many JVMs can run on a single machine and what is the meaning of Just-In-Time (JIT) compiler?

TCS,

1360

Given a singly linked list, determine whether it contains a loop or not without using temporary space?

Global Logic,

944

Is Constructor possible in abstract class in java ?

HCL,

1002

Give us a program to check for parenthesis matching using stack.

Genpact,

962

What is the Concept of Encapsulation in OOPS

HCL,

950

How can you read an integer value from the keyword when the application is runtime in java? example?

HCL,

1071

State differences between C and Java?

Deloitte, JPMorgan Chase,

1161

Differentiate storage classes on the basis of their scope?

Fidelity,

1128

What are "class access modifiers" in Java?

Genpact,

1073

How are multiple inheritances done in Java?

Atos Origin,

1105

Can we force garbage collector to run ?

B-Ways TecnoSoft,

1011

What is the difference between overriding and overloading in OOPS.

Axtria, ITC Indian Tobacco Company,

1091

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Un-Answered Questions { Core Java }

How many types of parsers are there?

978

What is a literal coding?

982

What are class members by default?

1036

What is the mapping mechanism used by java to identify IDL language?

973

How do you reverse a string in java without using string buffer?

1057

Why do we need wrapper classes?

1029

List primitive java types?

989

What does n mean in java?

937

What is args length in java?

1132

What lambda means?

951

How list contains works in java?

937

What is the default value of an object reference declared as an instance variable?

1066

How many bytes are there?

960

What is the difference between a factory and abstract factory pattern?

1097

How we can skip finally block of exception even if some exception occurs in the exception block in java?

894

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