Core Java Interview Questions
Questions Answers Views Company eMail

What is inner class?what is the use of inner class?where we create the object for inner class? and inner class can extend any class or inner class can implement any interface?

Wipro,

1 1972

Q) I have a ArrayList object, in that object i have added 5 integer values, 5 float values, 5 string values. Now question is how can delete particular type of data ( i.e all int values or all float values or string values) in that list object at a time?

Aricent,

3 7319

I have a Arraylist object, it has duplecate values also. Now question is i want delete duplecate data in that objet with out using Set?

Aricent,

8 12773

What are the similarities between an array and an ArrayList?

3 8692

Hai friends I am MCA 2006 passout. Spend time in 1 yr for teacing and 5 months in small s/w firm. worked in 4 or 5 months in few places. Presently I am writing bank exams. I want to get back to IT sector. Are there any possibilities. any growth prospects?. I am having some knowledge in core and advanced java. I am so desperate. Any suggestions thanks in advance. u can write to my mail mahidestiny@gmail.com

4 4095

how many ways we can serialize the java object?

Satyam,

2 11229

how many ways to create Thread and which one is good? runnable interface ot Thread class?

Satyam,

3 9806

what is difference between set and list in collection?

Satyam,

3 10698

What do u mean by method and also contructer in java ?

3 4356

what is main purpose of interface?

Accenture, HCL, NIIT,

2 13153

what is main purpose of abstract class?

7 11585

what is difference between abstract factory and factory design patterns?

1872

what is template design pattern?

1969

write a class to input 2 points by the user & check the line maked by the points is horizontal,vertical or rectangle?

1 2229

What are the ways of polymorphism other than Overridding & Overloading

1 5250


Post New Core Java Questions

Un-Answered Questions { Core Java }

Why hashset is used in java?

513


Can you explain inner class.

564


Explain about doubly linked list

596


How can you set the applet size?

546


Can we override private method in java?

596






What is considered an anti pattern?

503


How to instantiate static nested classes in java?

544


What is an example of a keyword?

516


Explain about static nested classes in java?

582


What is set in java?

509


When a thread is executing synchronized methods , then is it possible to execute other synchronized methods simultaneously by other threads?

546


What are the pillars of java?

471


What is sorting in java?

509


Is char a data type in java?

524


What are different types of states exist for a thread?

530