JAVA Interview Questions – Part 1

At present, Java is one of the popular programming languages by most of the programmers and developers across the globe. This programming language has been used for developing most of the complex applications in desktop, mobiles, tablets and other software. So this is the reason why Java professionals are in high demand in the IT technology and today most of the employees are moving to bandwagon to secure the job of Java programmer. Today, everyone is attending Java Training in Chennai, so every individual has high competition in attending a Java interview. Thus, to win in this highly competitive race it is essential to be up to date with the latest technology. To face Java Interview here are the some of the basic questions which are needed to know before attending the interview.

Define JAVA?

Java is an object-oriented programming language and it was first released by Sun Microsystem in 1995. Java is platform independent, secure, reliable and fast. From Mobile phones to the Internet, laptops to servers, Java is everywhere.

Major features of JAVA

  • It is Platform Independent
  • It is Reusable
  • It is User-friendly since provides the main emphasis to data
  • It is very secure, no one can access the data without the user’s permission

What is the abstract class in Java?

An abstract class is a type of differential implemented the class and some part of this abstract class is fully implemented and during the execution process, the other part cannot fully implement.

What is Java Package?

Java package is responsible for filling of different classes into the respective directories, thus makes very easy for the user to differentiate the data property

Differentiate Interface and Abstract class

An abstract class doesn’t have the direct instance and it has methods inside the code string and this feature is not present in the interface class.

What is a difference between a stack and queue?

The difference between them is, the stack works on LIFO (Last In First Out) concepts and queue works on FIFO (First In First Out) concept

LIFO (Real-time e.g.): Disk arrangement

FIFO (Real-time e.g.): Standing in a queue

Beyond these fundamental questions, you are supposed to write some basic Java coding explaining with some commands by the interviewee and also you may ask to find out the errors in the coding. Take up Java Course in Chennai, before attending any Java Interview questions, since you will have confidence with the practical classes of Java.

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