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

Core Java Interview Questions

Questions Answers Views Company eMail

Where and how can you use a private constructor?

1013

What happens if an exception is not handled in a program?

1120

What is the difference between the size and capacity of a vector?

1059

Why deletion in linkedlist is fast than arraylist?

1119

What is the difference between a constructor and a method?

1275

When arithmeticexception is thrown?

1048

What’s meant by anonymous class?

1105

What are runtime exceptions?

1177

Which number is denoted by leading 0x or 0x in java?

1061

What is the default value of an object reference declared as an instance variable?

1135

If a variable is declared as private, where may the variable be accessed?

1077

Why do we need wrapper classes?

1088

What is the range of the short type?

1033

What is hashmap and map?

1039

When is the arraystoreexception thrown?

1045

Post New Core Java Questions

Un-Answered Questions { Core Java }

How do you do math powers in java?

1075

How to create com object in Java?

1087

Explain the use of shift operator in java. Can you give some examples?

991

Is {a, n, d} a palindrome? If you are given a random string, is it a palindrome or not?

1144

Where to store local variables?

1121

What is Java Reflection API? Why it’s so important to have?

1184

What are wrapper classes in java?

1090

What's the access scope of protected access specifier?

1058

What is vector capacity in java?

1100

How many decimal places is a double?

1004

Does printwriter create a file?

972

How can you share data between two thread in Java?

960

What is boolean keyword in java?

1145

Name component subclasses that support painting in java programming?

1088

Why webdriver is an interface?

1072

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