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

Core Java Interview Questions

Questions Answers Views Company eMail

wht is mean by dirty read?

1 8586

what is the difference between Java Command Line and C command Line?

2 9739

In Inheritence concept, i have a static method in super class and i am inheriting that class to one sub class.in that case the static method is inherited to sub class or not????

Accenture,

12 17981

Q1.A. Write note on “The class path Environment Variable”? B. Which are different kinds of source code? Q2.A. How to create an interface? B. Why convert an applet to an application? Q3.A. How to use Media tracker Class. B. How to use string tokenizer class. Q4 A. Explain the overview of UDP messaging. B. Difference between SQL Exception class and SQL Warning class. Q5. A. How to create com object in Java? B. Write short notes on “The properties class” Q6. A. When object is created and destroyed? B. Explain the JDB in depth & command line. C. Write short notes on Web Sites.

iGate, Seed Infotech,

2 8644

what are the oops concept in java explain with real time examples

Accenture, Bosch, Consummate Technologies, CTS, Current Technologies, iNautix, Infosys, Kekran Mekran, QA InfoTech, RTRT, SofTech, Tech Mahindra, Thorogood, Timios, Wipro,

24 200635

what is difference between Exception and Error?

36 96430

what is difference between colection and collections?

Amdocs, IBM, Infosys, Ipog Software, Polaris, Tech Mahindra,

25 72588

Why we can not force Garbage Collection?

7 15171

I have a class which is abstract which contains only the abstract methods. This is similar to an interface. Then, if i have given a choice to choose one of them. Which one i have to choose and why?

4 7551

How multipleInheritance is possible in java?

Satyam,

18 23696

explain me with a code snippet about the generation and handling of null point exceptions.

1 4602

We have two methods to create methods the threads. 1. Implementing runnable interface 2. Extending to thread class and overriding run method. Among these two which one is better and why? Please explain me in detail.

2 6396

When we can access the static data member without creating the object what is the need of the object in java.

Airhub, ssinformatics,

5 9458

whst is encapsulation?when u encpsulate actually while devoloping code?

Amdocs, MGL,

7 9924

what is the messsage u r going to get from an objectoriented programing?

MGL,

2153

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Un-Answered Questions { Core Java }

What is jdbc api?

1066

What is a finally block?

1038

Tell us something about different types of casting?

999

Is null == null in java?

1168

What are wrapped classes in java programming?

1109

What is stored procedure. How do you create stored procedure ?

1990

What is backdrop?

1144

How an object is serialized in java?

1041

Can a constructor have different name than a class name in java?

1287

What are basic data types?

1178

What is predicate in java?

1105

Can a class be private?

1017

What is overloading and overriding in java?

1300

Can we make main() thread as daemon?

1160

Is there any way to skip finally block of exception even if some exception occurs in the exception block?

1120

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