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

Topic :: Class

Class Interview Questions

Questions Answers Views Company eMail

what are the uses of Class class and what it returns? explain it with the example code.

1 3909

class test { private static void main(String []adsf) { } } explain me that the above code is error or exception

3 5687

class a extends b { } class b extends a { } why java doesn't support cyclic pls explain me with example

Wipro,

3 10089

If memory is allocated to a class,when object of the class is created then how do we use the abstract class methods.coz v cant create obj of abstract class, only reference is created,when the abstract class data and members got the space in memory??

2328

Amoung all classes of electric machines, why the transformer uses oil as one medium of cooling?

4 7929

class Database { public static $_instance; public static function getInstance() { if(!isset(self::$_instance)) self::$_instance = new Database(DB_SERVER, DB_USER, DB_PASS, DB_NAME); print_r(self::$_instance); return self::$_instance; } } can any one explain "self::$_instance = new Database(DB_SERVER, DB_USER, DB_PASS, DB_NAME);" this line

1 4919

Can we make a class with class with same;suppose public class abc { public class abc { } }

1 3288

what is constructor in a class, how it is work, how it is call?

2 4855

define oops with class and object

HCL, Tech Mahindra,

5 10801

can we declare a variable by name "this" in a class? Please explain?

IBM,

3 6900

What is asset class?

3 7364

in the lcmv what type of effect onm the mhc class i molecule

2265

What is Movement type, valuation Class, General Modifier, Valuation Area?

Satyam,

2 8893

how to make the double-tone class ? as we have singletone class..?

IBM, Microsoft,

1 5206

what is difference between interface and abstract class..?

4 7173