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Java interview questions for automation testing how to#
Java interview questions for automation testing software#
Java interview questions for automation testing code#

Q-14: Can you compile a Java class successfully without having the “main” method?Īns.

The method is used just before an object is destroyed and garbage collected.

finalize– It helps in garbage collection.

Java interview questions for automation testing code#

The code under the block gets executed apparently. It’s a keyword used for exception handling.finally– It makes you handle exceptions.

Variables defined in an interface are implicitly final.

final– It’s used to declare a constant.

Additionally, it comes with the compilers and debuggers tools required for developing Java applications. The JDK is a superset of the JRE and includes everything that the JRE contains. Q-2: What is JDK, and why is it required?Īns.

Java interview questions for automation testing software#

The JRE is the runtime component of Java software and is all you need to run any Java application. The JRE comprises of the Java Virtual Machine, Java platform classes, and supporting libraries. JRE stands for “Java Runtime Environment” which you usually download as Java software. Q-1: What is JRE, and why is it required?Īns. It’s almost sure that Interviewer can ask you 3-4 questions from this section to check your understanding of Java as a programming language. In this section, we’ve covered some of the key fundamental Java interview questions. Let’s now find out which of the Java interview questions is going to help you in the interviews. We hope this post would quickly help them fill this gap, and they would be able to learn just more than coding. But, they don’t focus on the theoretical part which is what is required to clinch a top Software testing job interview. We know that there are a lot of testers who write quality Java code. And it helped many readers in the Software testing fraternity to gain confidence in Java skills. It took us a while to come up with such a diverse set of Java interview questions.

Java interview questions for automation testing how to#

Q-6: Is it permissible for a constructor to have a different name than its class name in Java? Q-7: Is there any difference between an argument and a parameter? Q-8: How your program would behave if you declare the main method as private? Q-9: What if an application gets multiple classes having main() methods? Q-10: What difference do you see between pass-by-reference and pass-by-value in Java? Q-11: What do you understand by Byte Code? Q-12: What do you make of each keyword in public static void main(String args)? Q-13: Why do we use, , and keywords? Q-14: Can you compile a Java class successfully without having the “main” method? Q-15: What do you make of System, out and in the function ()? Q-16: What do you understand by explicit casting? Q-17: Would a Java program compile/run if we use instead of ? Q-18: How would you prove that an array is not null but is empty? Q-19: What do you understand of Garbage Collection and how to call it explicitly? Q-20: How comes an unreachable object become reachable again, is it at all possible? Q-5: Distinguish between a constructor and a method. 20 Java Basics Interview Questions Q-1: What is JRE, and why is it required? Q-2: What is JDK, and why is it required? Q-3: What is JVM, and why is it required? Q-4: Distinguish between Java Path and Classpath.