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

Core Java Interview Questions

Questions Answers Views Company eMail

finalize() method?

5 11501

What is the use of bin and lib in JDK?

TCS,

8 35774

What are Transient and Volatile Modifiers?

SAP Labs, TUP Manila,

3 15544

Difference between this(), super()?

College School Exams Tests, Oracle,

12 36969

What is a package?

2 5952

What is casting?

3 6537

Difference between an argument and a parameter?

Accounting, HCL, IBM, Quinnox,

10 48077

Explain final, finalize() and finally?

Accenture, TCS,

11 37992

What are different types of access modifiers?

3 8370

What are Encapsulation, Polymorphism and Inheritance?

5 25003

Explain different ways of passing arguments to sub-routine?

1 5797

Difference between Superclass and Subclass?

7 48577

what modifiers are used with top-level class?

2 6202

What are inner and anonymous class?

3 7169

what is the Diff. between Access Specifiers and Access Modifiers?

BMC, Cyber Shot, Infosys, VTS, Wipro,

39 124243

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Un-Answered Questions { Core Java }

What are java threads?

1125

What is a nonetype?

1124

Have you ever used hashtable and dictionary?

1012

What is a default constructor and also define copy contrucyor?

1099

What are different exception types exceptions available in java ?

1003

Why is it important to initialize a variable?

987

What is a parameter in matrices?

1045

What are the different types of data structures in java?

986

Which is bigger double or float?

965

What is java used for on a computer?

987

How many threads can java run?

1111

Can we use catch statement for checked exceptions?

959

Can a constructor have different name than a class name in java?

1184

Is node a data type in java?

997

What are serialization and deserialization?

1253

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