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 array pointers ?

Amdocs,

1040

What is better- service oriented or batch oriented solutions?

Amdocs,

2232

What is difference between an object and a class?

Amdocs,

1134

What is the purpose of checked and unchecked exceptions in JAVA?

Amdocs,

1014

What is the significance of continue jump statement? Explain with an example.

Amdocs,

1296

What is widening and narrowing in java? Discuss with an example.

Amdocs,

1049

Write the algorithm to check the number non-leaf nodes in a tree.

Amdocs,

1080

Differentiate between class and structure.

Amdocs, Motorola,

1137

Explain implementation and how is it different from conversion?

Aricent,

1095

Explain what pure virtual function is?

Aricent,

1029

How will you calculate the depth of a binary tree if the tree contains 15 nodes?

Aricent,

1090

Is it necessary for the port addresses to be unique? Explain with reason.

Aricent,

1023

Tell me how many ways are there to initialise an integer with a constant.

Aricent,

1115

Can you make a constructor final in Java?

SwanSoft Technologies,

1143

Differences between C and Java?

TCS,

1211

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Un-Answered Questions { Core Java }

What will happen to the exception object after exception handling?

998

Is static variable stored in heap?

1011

What are class members by default?

1093

What is integer parseint?

1000

What are the two basic ways in which classes that can be run as threads may be defined?

1082

Explain differences between checked and unchecked exceptions in java?

1074

How do you insert a line break?

917

How can I debug the Java security exceptions and AccessControlExceptions?

1159

What is the difference between public, private, protected, and friend access?

1050

what is the difference between yielding and sleeping? : Java thread

975

Is string a class?

1044

Make a data structure and implement an algorithm to print all the files in a directory. (The root directory can have sub-directories too.)

1349

Can you call a method in a method?

1102

What does it mean to flush a file?

1074

Write a program based on Java script program.

1150

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