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 return null in java?

958

Where is java located?

1047

What is treeset in java collection?

962

What is map and hashmap in java?

1060

Is null in java?

998

What is the arraylist in java?

1046

What is queue in java?

1145

Why do we need array in java?

1012

Why arraylist is not synchronized in java example?

1058

What is the use of arraylist in java?

1091

What is a arraylist in java?

1055

Which is better list or arraylist in java?

868

Why do we override tostring method in java?

959

What is the default size of set in java?

959

What is the maximum size of hashmap in java?

996

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Un-Answered Questions { Core Java }

What methods are used to get and set the text label displayed by a button object?

1013

How to change the priority of thread or how to set priority of thread?

1023

Describe 2 different ways to concatenate two strings.

1196

Write a program to find maximum and minimum number in array?

996

What is string syntax?

1052

What is float in java?

985

What is bufferedreader in java?

1044

How do you create a null object?

1081

Can we override data members in java?

1139

What is the size of int in 64-bit jvm?

1089

What is tostring () method?

1022

What does .equals do in java?

1087

What are measurable parameters?

1071

What is the default value of local and global variables?

1093

How will you communicate between two applets?

1159

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