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,

1081

What is java Applet?

TCS,

1115

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

DELL,

1106

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

TCS,

1464

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

Global Logic,

995

Is Constructor possible in abstract class in java ?

HCL,

1074

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

Genpact,

1017

What is the Concept of Encapsulation in OOPS

HCL,

1006

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

HCL,

1140

State differences between C and Java?

Deloitte, JPMorgan Chase,

1219

Differentiate storage classes on the basis of their scope?

Fidelity,

1175

What are "class access modifiers" in Java?

Genpact,

1147

How are multiple inheritances done in Java?

Atos Origin,

1147

Can we force garbage collector to run ?

B-Ways TecnoSoft,

1062

What is the difference between overriding and overloading in OOPS.

Axtria, ITC Indian Tobacco Company,

1173

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Un-Answered Questions { Core Java }

What is <> used for in java?

1131

Is hashset ordered java?

1099

Is there a way to increase the size of an array after its declaration?

1061

What does || || mean in math?

948

What does substring mean?

980

What are some characteristics of interference class?

1003

Explain java heap space and garbage collection?

1084

What is the difference between post and put?

1074

What is the flag in java?

1071

can used Protected Class outside Function.?

1111

How to reverse a string in java?

1087

What is the use of hashmap in java?

1096

What is int short for?

1060

How can we avoid including a header more than once?

1050

What are accessor methods in java?

1020

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