Jacoco Android Gradle Plugin
· A Gradle plugin that adds fully configured JacocoReport tasks for unit tests of each Android application and library project variant.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window com.mxalbert.gradle.jacoco-android.gradle.plugin-0.2.1.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.