could not find property 'sourceSets' on root project gradle

Question

I'm trying run gradle task. Before running one task I want to see all available tasks gradle tasks. To do it I go to the directory of my project, where is file build.gradle. When I have executed command I got an error

could not find property 'sourceSets' on root project gradle

Answer 1

Plugins that are applied to build.gradle should be at the very beginning of the build.gradle script. Move:

apply plugin: 'java'
apply plugin: 'findbugs'

to the beginning of the script.