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

Core Java Interview Questions

Questions Answers Views Company eMail

Is empty list java?

946

How do you add an arraylist to an array in java?

997

How do you initialize an arraylist in java?

1061

How do you remove all elements from an arraylist in java?

1053

How do you add an element to an arraylist in java?

966

How do you sort in ascending order in java?

893

How does arraylist work in java?

1139

How define set in java?

1094

Does java initialize arrays to zero?

1051

Does java linked list allow duplicates?

991

Can array grow dynamically in java?

997

How do you declare a destructor in java?

1029

Can we override tostring method in java?

983

Is node a data type in java?

1022

How hashmap increases its size in java?

1008

Post New Core Java Questions

Un-Answered Questions { Core Java }

What is a double vs float?

1032

Can we overload run() method in java?

1226

What does indexof mean?

1047

What will happen if there is a default method conflict as mentioned above and we have specified the same signature method in the base class instead of overriding in the existing class ?

977

How to make a write-only class in java?

1077

What is dynamic array in java?

1043

What are inner classes or non static nested classes in java?

1196

How to create a thread in java?

1153

How do you reverse a word in java?

1103

How many bytes are there?

1025

Can we override private method?

1110

Is a method a procedure?

1068

What is variable and rules of variable?

1037

What is the need of transient variables in Java ?

1089

Explain about the security aspect of java?

987

For More Un-Answered { Core Java } Questions Click Here