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 exception handling keywords in java?

1041

What is meant by method overriding?

1116

What is the purpose of a transient variable?

1073

Difference between notify() method and notifyall() method in java?

978

Explain about public and private access specifiers?

1065

What do you mean by constructor?

992

What is the disadvantage of synchronization?

1021

Explain about wait() method?

1032

What are the java ide’s?

1046

What is the final keyword in java?

1 1443

Difference between serialization and deserialization in java?

1153

How do you make a thread in java?

1104

When to use runnable interface vs thread class in java?

990

Explain thread life cycle in java?

1044

What is meant by local variable and instance variable?

1026

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Un-Answered Questions { Core Java }

What is core java used for?

1131

What are use cases?

986

How to make a write-only class in java?

1071

What is supplier in java?

1009

How to optimize the javac output?

1026

How do you reverse a word in java?

1090

What is array size in java?

967

I want my class to be developed in such a way that no other class (even derived class) can create its objects. Define how can I do so?

1182

What do you mean by default constructor in java?

1081

Can a main method be overloaded?

1029

What are the differences between forwarding () method and sendredirect() methods?

1116

how to run ecllipse with jettyserver for windows environment using batch file

2094

What is regex java?

1115

How many bits are used to represent unicode, ascii, utf-16, and utf-8 characters?

1100

What is the difference between the paint() and repaint() methods in java programming?

1201

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