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 8445

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

2 9516

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 17320

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 8396

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 199192

what is difference between Exception and Error?

36 94415

what is difference between colection and collections?

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

25 71218

Why we can not force Garbage Collection?

7 14796

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 7266

How multipleInheritance is possible in java?

Satyam,

18 22663

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

1 4447

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 6200

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

Airhub, ssinformatics,

5 9119

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

Amdocs, MGL,

7 9506

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

MGL,

2064

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Un-Answered Questions { Core Java }

Write a program to print 15 random numbers using foreach of java 8?

900

What do you mean by aggregation?

1234

What is variable and its types?

985

What does null mean in java?

1031

I am a fresher and know core java, c languge, html, css etc if I am illegible for any job then send it on my email tatranakshay276@gmail.com

1656

What are sets in java?

904

How do you compare two strings lexicographically?

898

What is complexity and its types?

980

What is jdbc api?

971

Can we start a thread twice in java?

927

What is type safety in java?

917

What do you mean by of string::valueof expression in java 8?

925

What do you mean by data type?

982

What are the two ways in which thread can be created?

1014

How strings are created in java?

988

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