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

Java J2EE (14736)
J2ME (151)
Java Related AllOther (507)

Java Related Interview Questions

Questions Answers Views Company eMail

How to make class immutable

6 10370

How to decrease number of hashings in has

1 3952

i have 1000 records in resultset, how to get first 100 records from resultset, because resultset fetch all 1000 records at a time?

HSBC,

8 21741

Is there any limitation for no of statments executed with in batchupdate?

HSBC, IBM,

2 6431

Is it safe for adding 10,00,000 records/objects to HashMap?, i.e is it safe to add millions of objects to HashMap?

2 6128

i have make jar file but when i click in this file then arr swhow "no faund main class" plese help me in this problem becose i want to make a jar file as a dxdcutable file

1 3111

What is the difference between pageContext and page implicit objects in jsp?

Gspann Technologies, Merrill Lynch, Polaris,

9 39342

What is the purpose of premetive data types in java?

Merrill Lynch, TCS,

2 8425

Howmany number of objects we can store in an ArrayList. Is there any limit?

TCS,

7 14882

What is the basic functionality of DataOutput interface in java?

TCS,

2 6330

Can we inherit the constructor in a Class?please give one example.

iGate,

9 20017

Why do we use public static with the main function in Java?

College School Exams Tests, Infosys,

13 21695

What is the difference between overloading and overriding a function?

eG Innovations, Infosys, TCS,

13 24895

How u validate date in DD/MM/YY format. and how u validate money in ur jsp

Ashok Leyland, Satyam, Tech Mahindra, Tomax,

3 9123

when we have to use final class in java?

2 7926

Un-Answered Questions { Java Related }

What is the difference between break and continue statements?

1117

Can we return resultset in java?

985

What is parsing in java?

1030

What is difference between @controller and @restcontroller in spring?

536

What is action chaining ?

1158

What do you mean by an interface in java?

1095

What do you understand by casting in java language? What are the types of casting?

923

What is the difference between filters and interceptors ?

1298

Explain public static void main(string args[]) in java.

1063

Hi frnds how to lock an user when he enter wrong credentials more than 3 time using java or j2ee tech take username and password in a bean no need to connect DB and validate give me some sample application code or links its urgent for me thanks in advance

2415

Can we extract main method from another class?

1026

What is a classloader in java?

1082

hi actully i hav form columns with origin and destination names .as like as i need to create one more column with name amount. my requirement is when i select origin and destination columns automatically i need to get amount from database.how can i. please tel me with relative code

2861

Are jvm’s platform independent?

975

explain different ways of using thread? : Java thread

1079

For More Un-Answered { Java Related } Questions Click Here