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 are synchronized methods ?

1161

What is a lock or purpose of locks in java?

1093

In how many ways we can do synchronization in java?

1013

What is difference between c++ and java ?

1171

Explain a situation where finally block will not be executed?

1098

Explain yield() method in thread class ?

1120

What is class level lock ?

1085

What happens if we don’t override run method ?

1071

Explain about static nested classes in java?

1114

Can we create constructor in abstract class ?

1120

Explain purpose of sleep() method in java?

1175

What does null mean in java?

1137

How to do encapsulation in java?

1109

Can one thread block the other thread?

1072

Explain about instanceof operator in java?

1123

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Un-Answered Questions { Core Java }

How many types of the indexof method are there for strings?

1025

What are the ways in which a thread can enter the waiting state?

996

In a container there are 5 components. I want to display all the component names, how will you do that?

2253

What is a two-pass assembler?

1104

What is the static field modifier?

1180

What is singleton service?

1031

How do you make a thread in java?

1153

How to print an arraylist in java?

1172

Mention some interfaces implemented by linked list in java.

1086

What is the difference between delete and delete[]

1658

How do you remove duplicates from an array in java?

1017

Explain exception chaining in java?

1230

How to split a string in java?

1185

What is your platform’s default character encoding?

1142

Explain java coding standards for classes or java coding conventions for classes?

1184

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