Java Interview Questions Answers for Freshers (1 to four years experienced)

I receive got shared many posts nearly Java Interview Questions but inwards this article, I volition portion Java Interview questions in addition to answers peculiarly for junior Java developers. This includes college graduates, who are looking for the job, Java programmers who receive got 1 to two years of sense inwards Java in addition to junior developers who receive got two to iv years of sense inwards Java, C++ etc. At this level, Java questions are unremarkably non real tough. If y'all receive got proficient cognition of key programming areas e.g. information construction in addition to algorithms, in addition to a proficient agreement of Java programming language and JDK API, hence y'all are inwards proficient shape. Interviewer frequently looks for candidates who are willing to learn, proficient at learning inwards quick fourth dimension in addition to knows basic materials e.g. sorting list, searching through the array, starting stopping a thread in addition to tin give the sack read existing code. In this article, y'all volition notice questions from the areas targeted past times Interview for freshers in addition to Java developers amongst 1 to iv years of sense e.g. coding, array, OOP, main method, Collections, ArrayList, Enums, Threads, design patterns, JDBC, SQL, Linux in addition to other basic concepts.

Java Interview Questions in addition to Answers for Freshers

Here is the listing of around Java questions from interviews mainly from junior developers amongst 1, two or three years of experience. It is besides proficient for advanced Java developers amongst iv to five years of sense to laid upward for their telephonic round. I am certain y'all receive got seen a lot of these questions already inwards your Java interviews but having a listing is actually handy, peculiarly if y'all are looking for quick revision.

Java Interview Questions from Collections

How to withdraw duplicates from ArrayList inwards Java? (answer)
How to contrary ArrayList inwards Java? (answer)
The departure betwixt an array in addition to ArrayList inwards Java? (answer)
How to synchronize ArrayList inwards Java? (answer)
When to role ArrayList in addition to LinkedList inwards Java? (answer)
The departure betwixt ArrayList in addition to HashSet inwards Java? (answer)
How to loop over ArrayList inwards Java? (answer)
The departure betwixt Vector in addition to ArrayList inwards Java? (answer)
How to practice in addition to initialize ArrayList inwards i line? (answer)
How to form ArrayList inwards Java? (answer)
The departure betwixt HashMap in addition to ArrayList inwards Java? (answer)
How to role ArrayList inwards Java? (answer)
How to convert ArrayList to String inwards Java? (answer)
How to acquire sublist from ArrayList inwards Java? (answer)
Difference betwixt length() of array in addition to size() of ArrayList inwards Java? (answer)
What is CopyOnWriteArrayList inwards Java? (answer)
How to withdraw objects from ArrayList inwards Java? (answer)
How to banking concern lucifer if a given chemical cistron exists inwards ArrayList? (answer)
How to brand ArrayList read exclusively inwards Java? (answer)
How to form ArrayList inwards descending lodge inwards Java? (answer)
What is the departure betwixt HashSet in addition to TreeSet inwards Java? (answer)
What is the departure betwixt TreeMap in addition to TreeSet inwards Java? (answer)
What is the departure betwixt List, Set, in addition to Map inwards Java? (answer)

Java Interview Questions based on OOP concepts

What is method overloading inwards Java? (answer)
What is method overriding inwards Java? (answer)
What is method hiding inwards Java?
What are rules of method overloading in addition to overriding inwards Java? (answer)
The departure betwixt method overloading in addition to overriding? (answer)
Can nosotros overload a static method inwards Java? (answer)
Can nosotros override static method inwards Java? (answer)
Can nosotros foreclose overriding a method without using the in conclusion modifier?
Can nosotros override a mortal method inwards Java? (answer)
What is covariant method overriding?
Can nosotros alter the provide type of method to subclass spell overriding?
Can nosotros alter declaration listing of overriding method?
Can nosotros override a method which throws runtime exception without throws clause?
How practice y'all telephone squall upward superclass version of an overriding method inwards sub class?
What are rules of method overloading inwards Java?
Can nosotros override a non-static method every bit static inwards Java? (answer)
Can nosotros override the in conclusion method inwards Java? (answer)
Can nosotros receive got a non-abstract method within interface?
What is the default method of Java 8?
What is an abstract class inwards Java?
What is an interface inwards Java? What is the existent user of an interface? (answer)
The departure betwixt Abstract class in addition to interface? (answer)
Can nosotros brand a class abstract without an abstract method?
Can nosotros brand a class in conclusion in addition to abstract?
Can nosotros overload or override the primary method inwards Java? (answer)
What is the departure betwixt Polymorphism, Overloading, in addition to Overriding? (answer)
Can an interface extend to a greater extent than than i interface inwards Java?
Can a class extend to a greater extent than than i class inwards Java?
What is the departure betwixt abstraction in addition to polymorphism inwards Java? (answer)

Java Interview Questions on Constructor

Can nosotros telephone squall upward i constructor from other inwards Java? (answer)
Can nosotros declare a constructor inwards abstract class inwards Java? (answer)
Can a class receive got to a greater extent than than i constructor inwards Java? (answer)
What is the departure betwixt a method in addition to a constructor inwards Java? (answer)
What is the departure betwixt this() in addition to super() inwards Java? (answer)
Can nosotros override constructor inwards Java? (answer)

Basic Java Interview Questions

How practice y'all override equals(), hashCode() in addition to compareTo() inwards Java? (answer)
What is blank in conclusion variable inwards Java? (answer)
What is the departure betwixt this in addition to super keyword inwards Java? (answer)
What is the departure betwixt Comparator in addition to Comparable inwards Java? (answer)

Java Interview Questions from Multithreading

What is the departure betwixt Runnable in addition to Callable inwards Java? (answer)
Which i is better, implements Runnable or extends Thread? (answer)
wait() in addition to notify() method are defined inwards which class? (answer)
What is the departure betwixt CountDownLatch in addition to CyclicBarrier? (answer)
How to solve producer consumer employment inwards Java? (solution)
Can nosotros brand a method volatile inwards Java? (answer)

Java Interview Questions on Serialization

What is default serialization inwards Java? (answer)
What is the departure betwixt Serializable in addition to Externalizable inwards Java? (answer)

That's all inwards this listing of Java Interview Questions in addition to answers for Freshers and reckoner scientific discipline graduates. These interview questions are besides proficient to laid upward for internship jobs, where exclusively basic cognition in addition to fundamentals are tested. Remember, if y'all don't know the reply only says so, don't bluff in addition to e'er heed to interviewer carefully because, on freshers interview, most of the interviewer likes to come across if the candidate is willing to larn in addition to heed or not.

P.S. - Today, y'all guys are lucky every bit in that place are a distich of proficient books y'all tin give the sack role to laid upward for your Java interviews e.g. Programming Interview exposed in addition to Java Programming Interviews exposed, both are the fantabulous majority for freshers in addition to Java developers amongst 1 to iv years of experience.

P.S. - For coding problems, y'all tin give the sack besides receive got help from Cracking the Coding Interview sixth edition book, which contains around other 189+ problems in addition to solutions.