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 8513

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

2 9619

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 17632

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 8530

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 199875

what is difference between Exception and Error?

36 95460

what is difference between colection and collections?

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

25 71875

Why we can not force Garbage Collection?

7 14974

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 7417

How multipleInheritance is possible in java?

Satyam,

18 23162

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

1 4519

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 6277

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

Airhub, ssinformatics,

5 9283

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

Amdocs, MGL,

7 9702

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

MGL,

2105

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Un-Answered Questions { Core Java }

Can we modify the throws clause of the superclass method while overriding it in the subclass?

1037

What is a singleton class in Java?

1071

What is the difference between final, finally and finalize()?

1157

When can you say a graph to be a tree?

1086

What is a data structure java?

1010

How to instantiate member inner class?

1085

What is the collections api in java programming?

984

what is object-oriented programming in java?

1058

Where is java located?

1055

Is cout buffered?

1189

Is zero a positive integer?

1070

Objects or references which of them gets garbage collected?

970

What are java packages? What is the significance of packages?

1017

What is the function of java?

1013

Is age discrete or continuous?

1144

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