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 7787

explain the clone method and clonable interface

1 7588

what are depricated methods in threads and explain the lifecycle methods

CTS,

5 12814

explain the classification of exception and hoew to handle the exceptions

2 10033

what is java

10 11487

what is Assertion?

Wipro,

4 15126

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

TCS,

9 18329

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

Accenture,

3 9958

How does serialization work

Ordain Solutions,

3 11098

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

3 8525

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

Accenture,

4 26896

What is the difference between Stream Reader and Stream Writer?

4 17500

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

2 8353

Why we need to serialize the object

CTS, Geometric Software,

11 39866

can we have virtual functions in java?

Wipro,

11 47343

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Un-Answered Questions { Core Java }

What is implicit object in java?

1083

Is empty in java?

1060

What is indexof in java?

1007

Can we initialize the final blank variable?

1090

How to create a thread in java?

1140

Name few java 8 annotations ?

1028

What is a void method java?

959

What are the differences between include directive and include action?

1192

If I don't provide any arguments on the command line, then what will the value stored in the string array passed into the main() method, empty or null?

1256

What is runtime polymorphism or dynamic method dispatch?

1008

How do I remove a character from a string in java?

964

What is meant by stack and queue?

1071

how to write a program for sending mails between client and server

2073

Explain the key functions of data binding?

1021

How do you stop a thread in java?

1060

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