How to add API to forge project

[Skillter]

Hello, I am new developer and I have problem with adding API to my forge mod. I would appreciate help. I typed in build.gradle:

    repositories {
        jcenter()
        maven {
            name = "forge"
            url = "http://files.minecraftforge.net/maven"
        }
    }
    dependencies {
        classpath 'net.minecraftforge.gradle:ForgeGradle:2.1-SNAPSHOT'
        compile 'net.dv8tion:JDA:4.2.0_223'
    }

and I have this error:

Could not find method compile() for arguments [net.dv8tion:JDA:4.2.0_223] on org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler_Decorated@4e2916c3

JDA is API for discord bots for java. What am I doing wrong?

[loordgek]

you are using a unsupported version

learn how gradle works

 

[Skillter]

15 minutes ago, loordgek said:

you are using a unsupported version

learn how gradle works

 

unsupported version of gradle? what version is supported?