Java Gradle Build: NoClassDefFoundError
To run your app without any NoClassDefFoundError, you should have your dependencies in the runtime class path. Creating a fat jar is the simplest solution. Change your jar section like below;
jar { manifest { attributes( 'Class-Path': configurations.compile.files.collect {"$it.name"}.join(' '), 'Main-Class': 'products.ProductAPI')} from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }}run gradle build command and jar with dependencies will be created.Other way is to add jars to runtime class path are; with java -cp flag. (Also If your application has already a classpath folder configured, copying dependencies in this folder will add them to the classpath)