adding -Xlint flag to javac compiler

build.gradle

@@ -93,6 +93,11 @@ dependencies {
 	testCompile 'org.testng:testng:6+'
 }
 
+// Adding support for compiler warnings generation
+tasks.withType(Compile) {
+    options.compilerArgs << '-Xlint'
+}
+
 asciidoctor {
 	backend = 'html5'
 	sourceDir = file('doc')