From 5528fe80bfabc437d0f27e560f7b5fd7c0293ef2 Mon Sep 17 00:00:00 2001
From: Anuraag Agrawal <aanuraag@amazon.co.jp>
Date: Thu, 19 Nov 2020 05:53:07 +0900
Subject: [PATCH] Add an error message to better explain Java 11+ build
 requirement (#2081)

* Add an error message to better explain Java 11+ build requirement

* Better wording

* Merge
---
 build.gradle | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/build.gradle b/build.gradle
index 787e0e7a86..549ac099b1 100644
--- a/build.gradle
+++ b/build.gradle
@@ -10,6 +10,13 @@ plugins {
     id "io.morethan.jmhreport" apply false
 }
 
+if (!JavaVersion.current().isJava11Compatible()) {
+    throw new GradleException("JDK 11 or higher is required to build. " +
+            "One option is to download it from https://adoptopenjdk.net/. If you believe you already " +
+            "have it, please check that the JAVA_HOME environment variable is pointing at the " +
+            "JDK 11 installation.")
+}
+
 ext {
     opentelemetryProjects = subprojects - project(":opentelemetry-bom")
 }