What are the important concepts to learn in Java?

Top 10 Core Java Concepts

• DRY & Abstraction.
• Polymorphism.
• Encapsulation.
• Delegation.
• Program to an interface, not an implementation.
• Single Responsibility Principle.
• Open Closed Principle.
• Interface Segregation Principle.

Why do you choose Java interview questions?

Why Java?

• It is an Open Source Platform.
• It offers an easy to access application programming interface.
• It is supported on multiple platforms.
• It permits you to generate reusable codes.
• It is an independent platform.
• It supports garbage collection through which it can automate memory management.

How many types of Java are there?

There are four platforms of the Java programming language: Java Platform, Standard Edition (Java SE) Java Platform, Enterprise Edition (Java EE) Java Platform, Micro Edition (Java ME)

What is getter in Java?

Getters and setters are used to protect your data, particularly when creating classes. For each instance variable, a getter method returns its value while a setter method sets or updates its value. The getter method returns the value of the attribute. The setter method takes a parameter and assigns it to the attribute.

How to prepare for your next Java interview?

The best way to start with preparing for your next interview. 1.2. Object Initialization Best Practices In Java, object initialization is considered a heavy process and you are expected to know how each newly created object is affecting the memory and application performance.

What kind of questions are asked in a Java interview?

These days, you are more likely to be asked questions from the areas of Java that a developer might not typically be familiar with, e.g. NIO patterns, algorithms, data structures, and coding. Java interviews are known to be a little different than the other traditional programming interviews.

How do you explain concepts in a job interview?

It is very important to make the interviewer understand that you know how the concepts are inspired by real life so it will be good for you if instead of stating a definition, you provide him with an example and explain the concept in your own words.

What should be my main focus as a beginner in Java?

As a beginner your main focus should be to clear the basics concepts related to these topics. You can learn all the topics here – java tutorial by tutorialsinhand java variables (class variable, instance variable, local variable, parameter variables) why java is platform independence?