What is Gradle?

How Gradle is useful?

Most of Java/Scala/Android projects are similar, you compile source code, unit test it and generate executable file i.e. apk for android, *.jar for java/scala. What if you can do these all things in a single click? Yes, it is possible. with Gradle you can do all these pretty things.

What is Gradle?

Gradle is general purpose build tool that allows you to compile, test and execute one or more projects with a single click.

In simple word, Gradle stores configuration information project like location, compiler, test script.

How Gradle works?

Gradle maintains configuration file called build script. You just need to define a list of tasks you want to perform in the build script. Gradle plugins will parse it and perform the tasks sequentially.

for more details: https://docs.gradle.org/current/userguide/tutorial_java_projects.html