1: Create primitive app's scaffolding

build.gradle

@@ -13,3 +13,9 @@ repositories {
 
 dependencies {
 }
+
+jar {
+    manifest {
+        attributes 'Main-Class': 'com.bartek.esa.EsaMain'
+    }
+}

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,6 @@
+#Fri Mar 29 16:07:40 CET 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip

src/main/java/com/bartek/esa/EsaMain.java

@@ -0,0 +1,8 @@
+package com.bartek.esa;
+
+public class EsaMain {
+
+    public static void main(String[] args) {
+        System.out.println("Hello, world!");
+    }
+}