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

Core Java Interview Questions

Questions Answers Views Company eMail

why the constructor should be used in class,if there is no constructor what will happen?

4 7790

explain the clone method and clonable interface

1 7589

what are depricated methods in threads and explain the lifecycle methods

CTS,

5 12819

explain the classification of exception and hoew to handle the exceptions

2 10037

what is java

10 11501

what is Assertion?

Wipro,

4 15134

When does the compiler supply a default constructor for a class?

TCS,

9 18338

Which Math method is used to calculate the absolute value of a number?

Accenture,

3 9962

How does serialization work

Ordain Solutions,

3 11103

To what value is a variable of the Boolean type automatically initialized?

3 8528

What is the exact difference in between Unicast and Multicast object ?

Accenture,

4 26900

What is the difference between Stream Reader and Stream Writer?

4 17505

Which class should you use to obtain design information about an object

2 8354

Why we need to serialize the object

CTS, Geometric Software,

11 39880

can we have virtual functions in java?

Wipro,

11 47361

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Un-Answered Questions { Core Java }

How does remove work in java?

982

What do you mean by constructor?

983

Can we able to pass objects as an arguments in java?

1026

What is a null point?

1080

What do you understand by casting in java language?

1031

What is a java object and java application?

1057

Name four container classes.

993

What is field name?

1018

What is the java reflection api? Why it’s so important to have?

980

What is java Applet?

1110

Why is sizeof not a function?

1002

what do you mean by classloader?

1092

What restrictions are placed on method overloading?

1178

What is java beans?

1004

What do you mean by pointer value and address?

1053

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