Top Most Java Garbage Collection Interview Questions

Java garbage collection interview questions are most common java interview questions. The interviewer could use them to interview Java beginner asking simple questions like how to force the garbage collection. The same interviewer could ask Senior Java Developer with 5 years of experience about Java garbage collection tuning. Lets try to answer on the first question, leaving Java tuning interview

Top Most Java Interview Question 6: Explain JVM memory structure?

Some Java software developers think that they do need to know about JVM memory structure and wrongly assume that Java code written by them will always work if they were able to compile and run the application at least once. Unfortunately this is not a true, so the interviewer should always ask at least one question on JVM memory structure and tuning. The interviewer would expect that software

Top Most Java Interview Question 7: What is final finally finalize difference?

Java interview question about final, finally, and finalize is a straightforward question and software developer with an experience should not blabber on about a problem, but should stay light on details and just state the key points.

Final

When Final is applied to a class: The class cannot be subclassed.
public final class FinalClassExample {...}
When Final is applied to a method: The method

Top Most Java Interview Question 10: Swap the values of two variables without using third variable

Have you already come across a situation where you need to swap the values of two variables without using third variable? I bet it was during an fresher interview for Java Developer position. As an interviewee you can think that it is a poorly chosen interview question and the only person who can answer this questions is the one who knows the trick in advance. I’m agree in some ways it is tough

Top Most Java interview questions: GET vs POST?

Recommending a specific list of java interview questions for an interview is a risky business. Experienced Java developers have different view what is reasonable and what is not reasonable to ask. At the same time Junior Java Developers may find that the following Java interview question is fair and reasonable.


What is the difference between the HTML methods GET and POST?


GET and POST

Top Most Java Interview Question 2: Top Reasons To Choose Java?

How you answer the interview questions software developer willl be presented with during your interviews will determine whether or not software developer gets a job offer, so it is important to answer all questions even they appear to be an easy ones. There are multiple reasons to choose Java over other technologies and a few of them are :

Java is free and open source. There are large

Top Most Java Interview Question 5: What is JVM?

The Java Virtual machine (JVM) is the implementation of abstract definition of the Java Virtual Machine Specification. JVM is the application required for execution of a Java applications and programs. There are multiple implementation of JVM by different vendors. For example, JRockit JMV Oracle, I9 JVM IBM and HotSpot JVM (née Sun) Oracle. JVM is primarily aimed at executing Java applications,

Top Most Java Interview Question 4: What is the difference between JRE and JDK?

Ask a simple java interview question, such as what is JRE and JDK? (a legitimate interview question) and you still will get a few incorrect answers. Apparently even Senior Java developers sometimes being confused about the functionality of JRE and JDK.

What is JRE?

JRE is Java Runtime Environment. It is obviously JVM (Java Virtual Machine), core libraries and other additional components

Top Most Java Interview Question 3: What is the difference between J2EE and Java EE?

One of the questions I often ask during an interview is to explain the difference between Java EE and J2EE. Not surprisingly, this Java interview question is not as simple as it seems. I'm glad there are software developers who knows the correct answer, surprised that there are candidates who do not know the difference, and shocked when the candidate, usually folks applying for senior positions,

Top Most Java interview question 1: Explain public static void main(String[] args) method

In Java language, every application must contain a main method whose signature is one of the following method heading

public static void main(String[] args)

public static void main(String... args)

public static void main(String args[])

public - can be accessed from anywhere
static – can be invoked without instantiating the class
void - the method returns nothing
main – the name of the method

Top Most Java Collections Interview Questions

Java Collections interview questions - there are an experienced developers who believe there is no need to memorize core elements of Java Collections Framework - interfaces, implementations and algorithms. These Java developers wrongly assume that if the programmer can google interview questions, there is not point to remember the answer and correct answers on these Java collections interview