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 generic type?

1044

How do you calculate square roots?

1180

What is get () in java?

1074

What is math in java?

1080

What is incompatible types in java?

1053

What is floor math?

1025

How does hashset work in java?

1140

How do you convert an int to a double in java?

1076

How do you do absolute value in java?

1000

What is the use of math abs in java?

1030

What is math floor in java?

967

Is math an abstract class in java?

1029

How do you reverse a string in java?

1163

How do you check if a number is a perfect square?

1009

Can we sort hashset in java?

1103

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Un-Answered Questions { Core Java }

Explain illegalmonitorstateexception and when it will be thrown?

1121

What is polymorphism in java? What are the kinds of polymorphism?

1095

What is character in data type?

975

What is ‘is-a ‘ relationship in java?

1060

Are private methods final?

922

Write a program to check for a prime number in java?

1056

What is main in java?

1164

How define set in java?

1094

Define jre i.e. Java runtime environment?

1030

What is string value?

1180

What happens to the Exception object after handling an exception?

2389

Convert a BST into a DLL and DLL to BST in place.

1129

Explain scope or life time of local variables in java?

1043

What is treeset and treemap in java?

1091

how can you catch multiple exceptions in java?

1026

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