Merge pull request #613 from ie3-institute/df/#612-fix-javaVersionCheck

Included a doFirst clause into `checkJavaVersion.gradle`

Author: danielfeismann

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 - updated zero divison error issue in Qualityutil[#295](https://github.com/ie3-institute/PowerSystemUtils/issues/295)
+- Included a doFirst clause into `checkJavaVersion.gradle` [#612](https://github.com/ie3-institute/PowerSystemUtils/issues/612)
 
 ## [3.1.0]
 

gradle/scripts/checkJavaVersion.gradle

@@ -3,10 +3,11 @@
 tasks.register("checkJavaVersion") {
 	group = 'Verification'
 	description = 'Enforces correct Java version'
-
-	def foundVersion = JavaVersion.current()
-	if (foundVersion != javaVersion)
-		throw new IllegalStateException("Wrong Java version: required is "
-		+ javaVersion + ", but found " + foundVersion)
+	doFirst {
+		def foundVersion = JavaVersion.current()
+		if (foundVersion != javaVersion)
+			throw new IllegalStateException("Wrong Java version: required is "
+			+ javaVersion + ", but found " + foundVersion)
+	}
 }
 compileJava.dependsOn(checkJavaVersion)