Can you give an example of a time when you worked with a team to solve a problem?Īn interviewer might ask this question to determine your ability to work with a team and if you can add to their company culture. This saved the developers time because we only write the source code once." 12. We could then run this byte code on any other operating system, such as Microsoft or MAC, by converting the code using the Java Virtual Machine, which is available to install on all operating systems. Earlier programming languages, such as C and C++, require developers to compile separate source code for every operating system they run it on.įor example, at my last job, I wrote Java code using a Linux operating system. Platform independence means the execution of your program doesn't depend on the operating system being used. You can show the real-world application benefits of this feature by describing a specific example of code you've written on one platform that runs across multiple platforms.Įxample answer: "One of the primary purposes for Java code was to create a programming language that developers could use across multiple platforms without having to change the source code for each platform. When answering this question, make it clear to the interviewer you know the platform independence feature was one of the primary purposes for creating Java code and how this feature creates real-world benefits in applications. Interviewers ask this question because they want to determine whether you know the basic features and foundations of Java code and their real-world benefits. Why do people call Java the "platform-independent programming language"? Here are seven Java questions along with sample answers to help you prepare: 11. Related: How To Become a Java Architect: Skills and Requirements 7 Java coding interview questions and answers Can you overload or override static methods in Java? Can you write me a Selenium code to switch to the previous tab? 10. How's inheritance in C++ different from Java? 9. What are the differences between HashMap and HashTable in Java? 8. Will you write a Java program to find the duplicate characters in a string? 7. ![]() Can you write me a Java program to find whether a number is prime? 6. Can you write a Java program to swap two numbers without using the third variable for me? 4. What's an abstract class? How are abstract classes similar or different in Java from C++? 3. ![]() Can you write me a Java program to swap two numbers using the third variable? 2. Interviewers usually ask basic Java code questions in interviews, along with some theoretical aspects. They might ask you questions or tasks like:ġ. Related: 12 Tough Interview Questions and Answers 10 common Java code interview questions It's a memory management and multithreaded programming language. Java has experienced consistent development. The code's robust enough to run Java programs independently with no external dependencies. Most computers can handle a JRE, including Macintosh, Linux, Unix, Windows and selective mobile phones.įeatures that make Java programming popular include:Īny code written with Java can run on virtually any computing platform. ![]() As long as your computer has the Java Runtime Environment, you can execute a Java program on your computer. One of the biggest reasons Java's popular among employers is because of its independence. Why is Java coding popular among employers? In this article, we review the reasons Java is a popular language among employers and provide examples of 51 Java coding interview questions and answers to help you prepare. ![]() Although the questions the interviewer asks vary, you can practice your responses to help refresh your knowledge of Java. Practicing your responses can help you feel more confident when responding to questions or writing test code. If you're preparing to interview for a job that requires knowledge of Java, it's important to learn about some of the common questions the hiring manager may ask.
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