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Core Java Interview Questions
Questions Answers Views Company eMail

If you are reviewing the code of your team members, what points will you look at, assuming the performance of the application is not so great

KPIT,

2 6284

How will you convert an ArrayList to Arrays?

KPIT,

4 9292

steps to connect with Oracle Databse using TYPE-2 Jdbc driver.

3 11950

what are the methods of an object class?

3 6378

can u give one sinario when you use Abstract Class and When you use Interface.

ITC Infotech,

5 9785

Nullpointer exception is a very common exception. Why is it not made as a checked exception?

Ness Technologies,

2 7787

What is the difference between Checked and Unchecked exception? Give some examples

Ness Technologies,

2 8024

What is the purpose of having the concept of overloading?

Ness Technologies,

7 18700

How does Vector implement synchronization?

Ness Technologies,

4 12396

What is meant by Encapsulation? Can you write a class to explain encapsulation?

Ness Technologies,

8 16658

What is meant by event handling in SAX parser?

Ness Technologies,

1 6231

When you say String is immutable, what do you mean by that? Say I have String s = "Ness" s= s+"Technologies"; What will happen? If the value gets appended, then what is the meaning of immutable here?

Ness Technologies,

5 17138

Java violates few objected oriented concepts. Can you explain in what way?

Ness Technologies,

3 9042

Why java Don't Support Multiple interitence

ABC, Exilant, IBM,

8 14635

In Java why we write public static void main(String args[]) why not main()?

Aptech, GE Healthcare, Infosys, Microsoft, New Horizon, Practical Viva Questions, TCS, Wipro,

46 108871


Post New Core Java Questions

Un-Answered Questions { Core Java }

Can we overload the methods by making them static?

1003


Why call by value prevents parameter value change?

1077


What is the access scope of a protected method?

1032


How many days will it take to learn java?

935


What is difference between array and vector?

1089


What are the major drawbacks of external iteration?

1065


When should I use stringbuffer?

1019


What are bind parameters?

1045


How to sort elements in a parallel array in java?

893


How do you sort a string in java?

963


What is the replace tool?

1168


What is the use of inner class?

1046


What do you mean by JVM?

1081


In java, how many ways you can take input from the console?

997


What are the escape sequences in java?

1029