If you're looking for Gradle Interview Questions for Experienced or Freshers, you are at the right place. There are a lot of opportunities from many reputed companies in the world. According to research, Gradle has an impressive market share. So, You still have the opportunity to move ahead in your career in Gradle Development. Mindmajix offers Advanced Gradle Interview Questions 2021 that help you in cracking your interview & acquire a dream career as Gradle Developer.
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Gradle is an open-source built system whose main job is to take the project’s resources, source code, and other things related to it into an APK file. Gradle uses a stable programming language known as Groovy rather than using an HTML configuration file.
Gradle build can easily handle anything related to the code of the program as Gradle’s build scripts are coded in a superior language. They are a regular program that uses Groovy instead of Java to write scripts. It also has a directed acyclic graph that determines the task’s order.
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Gradle uses a programming language that is written in script form, and the name of that script is Groovy. The features of this language are:
It is a type of automated build system which is open source and creates builds on the concepts of Apache Ant and Maven. It uses a domain-specific language (DSL) which is based on Groovy to declare the configuration of the project. It doesn’t use the XML form that Apache Maven uses for this declaration.
The benefit of using Gradle is that you get the best features of both Ant and Maven as Gradle is a combination of both frameworks. It is flexible due to Ant and provides configuration dependency management conversion due to plugins of Maven.
Other benefits include:
Build.gradle is the name of the file name that Gradle builds.
To add dependencies to a project, state the dependency configuration like the dependencies block of the build.gradle file.
Developers prefer Gradle over other Frameworks because it uses Groovy for scriptwriting which has a similar syntax to Java. It is easy to understand and also offers support for multi-build projects.
There are no known limitations of Gradle, and Gradle is preferred over Maven and Ant. However, in practice, it has been found that IDE integration is not good in Gradle. Secondly, the concept of parent projects that are capable of providing inheritable version numbers doesn’t exist in Gradle.
With the help of a build scan one can develop key insights into what happened during a build, and why it happened. It is more like troubleshooting a failed build with the help of a log file. In order to create a build scan, one needs to run the command "Gradle build --scan", and can check the output from scan.gradle.com.
With Gradle Script Kotlin, you get a milestone which is then shipped with the 3.0 version. It posts the data pertaining to the roadmap to Kotlin 1.0 Gradle Script.
Yes, it is quite possible. You can develop the build logic in any JVM language, and the existing plugins would work. It works with each other and with well-written build scripts in Kotlin or Groovy.
There is no specific way to use Kotlin for Gradle. But JetBrains has come up with IDEA, which is the best solution to use Kotlin for Gradle. Moreover, it works as an inventor driving the force behind Kotlin. It provides the best Kotlin support for Eclipse. Also, Gradle provides means to build the Eclipse logic which improvises the Kotlin after it interacts with Kotlin support for Eclipse.
To build a plugin, you require JVM language. But it is recommended that you try various other languages of your choice for building the Gradle plugins.
Yes, it is quite possible. With the help of the section- Gradle Projects, you can view the lists of available projects.
No, it is not as the support for Gradle Groovy cannot be deprecated. Instead, it will continue to get the required support.
Build.xml is an XML file that has an end and starts tag. Whereas Build.gradle operates on the programming language Groovy.
To install Eclipse Gradle, follow these steps:
The Gradle wrapper is the most suitable way to initiate a Gradle build. A Gradle wrapper is a Windows batch script that has a shell script for the OS (operating system). Once you start the Gradle build via the wrapper, you will see an auto-download that runs the build.
A configuration dependency is a set of dependencies that includes external dependency that you require to install and ensure that the downloading is happening via the web. Some key features of dependency configuration are:
Two types of plugins in Gradle are:
The latest version of Gradle automation that is available in the market is 3.5. Released in 2017, it is quick and fast than the previous versions. To know what version of local Gradle you are using, use the –v command.
Gradle Daemon is the background of Gradle that also works as a built server. Gradle Daemon runs at a rapid pace which incidentally is its best part. It has a long-living Java background process. It also operates as a communication solution for a client with the native TCP.
With the reuse of computation using the previous bud, you can improve the build speed of Gradle. Also, utilizing cache information can also provide better and fast output.
It is measured as one of the most efficient tools, which can manage any sort of task irrespective of its size. With Gradle, you can competently work with multiple tasks interrelated to projects. If the document is of small size, the task will be a lot easier and flexible. Besides, the whole process is said to be the Gradle Multi-Project building option.
To run Gradle build, use Gradle command.
It is a background-built server that you can use to build quickly. Gradle Daemon’s best feature is the fact that its speed becomes faster as you use it more. It is a Java process that acts as a server/client that communicates with a local TCP. It also executes and finds build actions.
Daemon has these new updates in Gradle 3.0:
A Gradle Build Task comprises more than one project/task representing the work done with Gradle. For example, it can represent a web application or a library jar or an activity that used Gradle and so on.
Let’s look at the main features of Gradle build tasks:
A Gradle Wrapper is a tool that can aid you in running Gradle without having the need for installing or downloading the versions of Gradle you need. The Gradle version you work on with the help of Gradle Wrapper is specific to a particular project only. Gradle wrapper’s key features:
The Gradle Build life cycle has three important steps. If you don’t follow these steps, the build cycle will fail. The three steps are the initialization phase, execution phase, and configuration phase.
A plugin is a source for adding any useful feature to a particular build project like creating documentation and Java code compilation and so on. The Plugin enhances the Gradle features, and it provides an option to customize each and every build.
The main job of a Java Plugin is to add Java compilation besides bundling and testing capabilities to the tasks. The plugin is a SourceSet that acts as a collection of source files that you can execute and compile together. Thus, they add original tasks and can build domino and so on.
Traditionally, the building was all about packaging and compiling the source code. But now the work of a builder is more than that. They have to perform test runs, merge code resources with multiple sources, provide documentation, manage dependencies and publish applications.
Thus, the builder became software where you can release apps and change tests. And with Gradle, you can perform all these functions in a single place.
For instance, Gradle as the build tool for Android Studio. It makes Gradle more efficient than other tools. In fact, the whole process of building an Android app is now with the Gradle tool. It can work with multiple platforms and has a powerful and compact build language Groovy.
The Java system has two well-known build tools- Gradle and Maven. Both these tools have more similarities than differences, thus it will be interesting to compare these two.
Management of Gradle Dependency includes programming the dependencies that run within the form for building projects in a specific path. It leads to a distinctive syntax that is known as dependencies. The major goal of Gradle is to find a pathway where it can construct or run the tasks so that it can find them.
It also determines the project’s dependencies and highlights them within the build tool. This whole thing is known as Gradle dependency management.
To easily construct a Java Project, you can use a modern tool known as Gradle build file. To do this, firstly add the Java Plugin in the Gradle build script. It will aid in compiling Javadoc, Java-based code, and run tests and build a JAR record. All this will be possible only if you use the "build.gradle" format rightfully throughout the entire process.
The three features are:
Gradle is a sophisticated and modern tool with unique features and qualities. Many programming languages can use Gradle such as:
Gradle is amongst the best tools that can easily handle multiple projects irrespective of their size. The Gradle tool is a highly effective tool that can work with many kinds of tasks and projects. The work becomes slightly flexible and easy when the file size is small. The name of this complete process is Gradle Multi-project build.
One of the unique features of Gradle is that it can work on numerous tasks simultaneously with high-performance quality. The scenario in which Gradle gives a command line to initiate the build script is known as Gradle running build. Thus, it is easy for Gradle to execute numerous project-based work one at a time from within a single build file.
The whole process works as a conjunction where you can add or link one project with the other repeatedly.
The central components of Gradle are Task and Project. Groovy, Gradle’s programming language arranges projects as task lists.
To view the available project’s list-use the Gradle project command. To view that task list, use the Gradle tasks command.
To find Gradle Project dependencies, utilize the command option. It will list selected dependencies that will have both the dependencies- transitive on one side and direct dependencies on the other side.
Build.gradle Script operates on Groovy which is the official programming language of Gradle. Also, the build script runs on syntax.
Maven Build.xml has two crucial attributes that define it- end tags and start tags.
First, make a new project on IntelliJ. Here you will get various options, select the “Gradle” option from that.
Next, you will see a checkbox that shows the entire empty directories like source test Java or source main Java.
From there, you will select a build wrapper (Gradle) to move on with the project’s process and modify the version of the JVM to 1.8. It will lastly show you the skeletons the project has.
It means that you can deploy repositories of build artifacts in various ways. It can use the Maven Publish plugin to readily switch from Gradle to Maven.
Ant and Maven are both great tools and have many similar traits and features. Ant is popular for its flexibility while Maven is popular for its management of dependency efficiency.
But the reason why Gradle is the first choice of many people is its unique traits. One of its best features is that it works commendably well on numerous multi-projects with easy-to-use functions. It possesses the key features of both Maven and Ant i.e. convention building and flexibility.
The other two have no support for multi-projects and you have to do a lot of coding.
Yes, it can.
By nature, Gradle is very flexible, and that helps it to adapt to any position and structure according to the structure’s behavior. It is a trustworthy source that works step by step efficiently and is not destructive at all.
The Gradle system has a fervent slogan that pushes the user to have faith in the opposite framework. The slogan says, “Make the impossible possible, make the possible easy, and make the easy elegant”. There is an instrument that can help you select the correct slogan.
The Gradle provides numerous options and ways that can help you create and construct Java for configuring it throughout the entire process of the project. It also helps to convey out the build.
The console is the place where all the action happens on the Gradle platform. One can execute the command from the console, check, and print the output, and even check the build status. If there is an error while compiling, it can be checked in Console.
The Gradle wrapper frees the developer from maintaining the version, as it automatically downloads the correct version of Gradle required for a particular build. Gradle wrapper performs this with the help of a script. Gradle daemon is a background process that executes the builds in a quick manner. It remains idle in between when it is not executing the build process, and quietly waits for the next build.
Gradle can be installed on major platforms, such as MacOS, Windows, and Linux. Since JDK is used for compiling in Gradle, as a prerequisite JDK version 6 or later needs to be installed. There is no specific hardware requirement for Gradle, but a system with 16 GB RAM is considered optimum. Once the Gradle is installed on the system, the environment variables need to be set properly. Gradle build package will not function, without environment variables being set.
Ravindra Savaram is a Content Lead at Mindmajix.com. His passion lies in writing articles on the most popular IT platforms including Machine learning, DevOps, Data Science, Artificial Intelligence, RPA, Deep Learning, and so on. You can stay up to date on all these technologies by following him on LinkedIn and Twitter.