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 happens when you add a double value to a string?

1006

What modifiers may be used with a top-level class?

1070

What is the arguement of main method?

1 1684

Can a class extend more than one class?

1127

How is final different from finally and finalize?

928

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

1100

What are the legal operands of the instanceof operator?

1031

When will you define a method as static?

1102

Can a class be defined inside an interface?

1040

does java support pointers?

1000

Should a main method be compulsorily declared in all java classes?

1075

Why isn’t there operator overloading?

1096

What is the importance of static variable?

1122

Are arrays primitive data types?

1191

What is a local, member and a class variable?

1043

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Un-Answered Questions { Core Java }

Which is dependent variable?

906

What is run time allocation?

1031

Why stringbuilder is not thread safe in java?

1020

Name the components that are termed to be Heavy-weight component but available in Light-weight components?

2491

Is zero a positive integer?

1075

What is the generic class?

977

What is :: operator in java?

978

What is arrays aslist in java?

964

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

2193

How many types of literals are there in JAVA?

1049

What are the methods available in a class?

1086

What is the difference between length and length () in java?

950

Why main function is static?

1257

What is java util list?

967

Explain a situation where finally block will not be executed?

1044

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