tag:blogger.com,1999:blog-6392093250640979322012-01-22T16:42:55.469-08:00Common Java interview questions with answersMBnoreply@blogger.comBlogger101100tag:blogger.com,1999:blog-639209325064097932.post-23588325695438242432011-11-06T19:34:00.000-08:002011-12-11T10:45:55.483-08:00

There are SQL interview questions for Java developer, because Java applications come in different shapes and sizes. The application could be just servlet based web application or it could use application frameworks like Spring or Struts. All enterprise Java applications have a common approach: they store data in a database like MS SQL, Oracle SQL or MySQL and use some framework to interact with

MBnoreply@blogger.com0tag:blogger.com,1999:blog-639209325064097932.post-22006871569209800912011-10-29T20:24:00.000-07:002011-10-29T20:31:54.795-07:00

As an open-ended interview question I like to ask both beginner and experienced Java Developer about Java future. The short version of one of the answers may sound like this: Java platform, JVM and JDK, will certainly continue have the same importance it had in the past and will most likely maintain its position of most popular platform for software development for a long time. Groovy, Selenium

MBnoreply@blogger.com0tag:blogger.com,1999:blog-639209325064097932.post-41660068408613025332011-10-08T22:38:00.000-07:002011-10-18T23:09:54.598-07:00

Usually Java interview questions for developers with 2 year experience, 3 year experience do not include basic questions like explaining difference between JDK and JRE or naming four access level modifiers in Java. I bet every beginner Java developer could name them as public, protected, default and private and most likely would remember that a constructor can use all four access modifiers. In

MBnoreply@blogger.com0tag:blogger.com,1999:blog-639209325064097932.post-90685381087006273652011-04-26T22:42:00.000-07:002011-10-18T23:09:17.982-07:00

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

MBnoreply@blogger.com0tag:blogger.com,1999:blog-639209325064097932.post-54391569127863377262011-03-27T21:40:00.001-07:002011-10-18T23:09:08.826-07:00

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

MBnoreply@blogger.com0tag:blogger.com,1999:blog-639209325064097932.post-29140485511302845842011-03-18T10:57:00.000-07:002011-10-18T23:08:59.859-07:00

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,

MBnoreply@blogger.com0tag:blogger.com,1999:blog-639209325064097932.post-54503588205681026762011-02-16T21:52:00.000-08:002011-10-18T23:08:51.259-07:00

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

MBnoreply@blogger.com0tag:blogger.com,1999:blog-639209325064097932.post-13274310496377542672011-01-06T15:40:00.000-08:002011-10-18T23:08:29.486-07:00

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,

MBnoreply@blogger.com0tag:blogger.com,1999:blog-639209325064097932.post-60965627613324444222010-12-18T15:47:00.001-08:002011-10-18T23:08:18.338-07:00

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

MBnoreply@blogger.com0tag:blogger.com,1999:blog-639209325064097932.post-77085791764940285682009-07-02T11:17:00.001-07:002011-10-18T23:08:08.574-07:00

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

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