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

Java J2EE (14736)
J2ME (151)
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Java Related Interview Questions

Questions Answers Views Company eMail

i want test pattern of zylog company and some examples also

2786

Hi how to create a mobile book on j2me program, for example dictionary, bible, magazine…. then read on the mobile phone, tell me the code and steps or other help site. Thanks

2 9408

How to create a mobile phone language or font like Arabic, Chines, Hindu or other(non English )

1 4712

1) There are 10 different threads in runnable state. Each having priority 1 to 10. How does the CPU schedules or executes these threads?

RBS,

2 7149

2) Suppose there are 5 directories having lot of files (say txt files) in each directory. 2 things :- 2.1) You want to search for filenames which have a particular pattern. 2.2) Out of these filtered files you want to search for a particular keyword or a search string. How can you achieve this?

RBS, TCS,

2297

3) Suppose you are a very rich person, having 50 rooms and you have lost the key for one of the room's. How effectively you can find this key? (Qs2 and Qs3 are related)

RBS,

3 8939

Suppose there is a System A which gives some output. This output is used as input by system B. The rate at which System A produces is faster than the rate at which system B consumes it. How can you improve this?

RBS,

1 5778

Suppose there is an Online shopping cart application having different objects like Cart, SelectionItem, Billing, COnfiguration, Authentication, Authorization, PersonalDetails etc. Out of this which one can be made a singleton pattern and why?

RBS,

2 10775

What is Co-Variant return type in method overriding?

RBS,

1 5819

7) Suppose there is Student class like class student { int age; string name; } We want to store these objects in a HashMap. Do we need to override any methods in Student class? If any which ones and why? what if i just override equals or just hashcode? what will be the results in both the cases?

CSC, Nagarro, RBS,

4 9404

Can an abstract class have a constructor?

RBS, Wipro,

1 9647

What is the life cycle of Servlet?

3 6542

JVM responsibility?

TCS,

6 16195

explain Anonynous inner class?

TCS,

6 9627

how can we call parametrized constrctor using reflection like Class.newInstance()...call default constrctor ..but how can we call paramitrize constroctor in reflection

2423

Un-Answered Questions { Java Related }

What is java full stack developer?

1056

Explain the functions of the following annotations: @component, @controller, @repository, @service.

399

What is the difference between hibernate session get() and load() method?

490

What does hibernate.properties file consist of?

383

Is array an object in java?

985

What you know about random port?

1009

What is function declaration?

985

Is jdbc part of j2ee?

994

Is tomcat a servlet container?

1072

What is variable and rules of variable?

1040

What is javamail?

956

What is the difference between public, private, protected, and friend access?

1073

Can you inherit a constructor java?

1113

What is xml based validation in struts2?

1100

What is jms mean?

922

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