6 Core Questions about Java You Need To Prepare for Java Interviews

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If you are preparing for java/j2EE interviews, you should focus on core questions. Here is a list of 6 core java interview questions you need to prepare. For more, visit https://bit.ly/2loeJWL

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6 Core Questions about Java You Need To Prepare for Java Interviews

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If you are preparing for java/j2EE interviews you should focus on core questions. No matter you’re a fresher or an experienced candidate preparing well to crack the interview should your priority. It’s essential for you to get through all the top java interview programs. Here is a list of 6 core java interview questions you need to prepare. What is Platform independence of java This is one of the most common asked questions. To give the answer this is a kind of platform of java which allows you to write and compile program in one Operating system and run in other operating system. To take an example an individual can compile program in Windows and run it in Unix.

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Let us know the difference between JVM JRE and JDK JVM JRE and JDK are three important features of java. 1. JVM is meant for Java Virtual Machine which runs the byte code. 2. The full form of JRE is Java Runtime Environment. Having JVM libraries such as rt.jar and other files it provides runtime environment for java code. 3. JDK means Java development kit which is superset of JRE. It has JRE + compilation and debugging tools javac and java. What are memory areas of JVM Heap area Method area JVM language stacks Program counter PC register and Native method stacks are the memory areas allocated in JVM. What is OOP in Java What is OOP in Java OOP stands for Object Oriented Programming concepts in Java. They are primary concepts behind Java’s Object Oriented Programming. They are an encapsulation abstraction inheritance and polymorphism. It’s key to understand how java works. Let us know the core concepts of OOP Object Oriented Programming in Java. Core concepts of OOPs are Encapsulation Polymorphism Abstraction and Inheritance. They help you create working techniques and variables followed by reusing all or part of them without compromising security. What Is Abstraction and how you can achieve it Abstraction is a concept that empowers you to expose only hiding implementation details and other essential details. In java you can achieve abstraction by using two methods: 1. Abstract class 0 to 100 abstraction and 2. Interface 100 abstraction. These are the six important and common questions you should practice. However don’t think these are the only questions you should prepare. To know about some more questions you need to find and online coaching and join java tuition classes.

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