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

Core Java Interview Questions

Questions Answers Views Company eMail

How many times garbage collector will invoke an object?s finalize() method?

4 7500

How applets will communicate with each other?

1 4301

What method is used to compare two strings ?

4 10261

How to know the host from which Applet is originated?

Wipro,

1 3582

How to prevent a field from serialization ?

2 10193

How to add panel to a Frame?

5 14878

How can a class be accessed, If no access modifiers are declared?

4 7866

How to access a method that it declared as protected?

3 6420

How to access a variable if it is declared as private?

3 7180

How to re-get an object that is collected by garbage collector?

1 4159

What we have to do, when we don't want to implement all methods of an interface?

5 8398

How to display names of all components in a Container?

Microsoft, Wipro,

2941

Name the package that most of the AWT events that supports event-delegation model are defined?

2 6510

What are Inner classes?

4 7278

Is &&= a valid Java operator?

2 13518

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Un-Answered Questions { Core Java }

How do you use find and replace?

960

what is object slice?

2089

What is a lambda expression ? What's its use ?

1111

What is the difference between serial and throughput garbage collector?

1100

What is Enum in Java?

1318

Is hashset ordered java?

1095

How to perform merge sort in java?

1060

What is constructor in java ?

1200

Difference between static binding and dynamic binding?

1114

What is exception hierarchy in java?

1014

What is the default access specifier for variables and methods of a class?

1207

Write a program to reverse a number in java?

1098

How do I know if java is installed?

1091

What is meant by class loader? How many types are there? When will we use them?

973

What is data type in computer?

965

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