add tasks to build.gradle

Author: yito88

build.gradle

@@ -23,6 +23,16 @@ dependencies {
     testImplementation group: 'org.mockito', name: 'mockito-core', version: '3.2.4'
 }
 
+task sourcesJar(type: Jar) {
+    classifier = 'sources'
+    from sourceSets.main.allSource
+}
+
+task javadocJar(type: Jar) {
+    classifier = 'javadoc'
+    from javadoc
+}
+
 sourceCompatibility = 1.8
 targetCompatibility = 1.8