Gradle not maintaining directory hierarchy on gradle build

Question

I am starting a project using gradle to build it. The folder structure follows:

java_data_structures

├── build.gradle

├── build

|   ├── classes

|   |   ├── groovy

|   |   |   └── test

|   |   |       └── DoublyLinkedListSpec.class

|   |   └── java

|   |       └── main

|   |           ├── Application.class

|   |           └── DoublyLinkedList.class

|   ├── distributions

|   └── other

|

└── src

    ├── main

    │   └── java

    │       ├── Application.java

    │       ├── graphs

    │       ├── maps

    │       ├── matricies

    │       ├── sets

    │       ├── trees

    │       ├── vectors

    │       |   └── DoublyLinkedList.java

    │       └── Application.java  

    └── test

        └── groovy

            └── vectors

                └── DoublyLinkedListSpec.groovy

The issue is that, the folder structure in the

build/classes/java

and

build/classes/groovy

have been changed. It just lumps all of the class files into one folder -

main

and

tests

respectively. This is an issue for me because in my

Application.java

file, I have the following code:

public class Application {



  public static void main(String[] args) {

    DoublyLinkedList<Integer> list;

    Integer[] array = {1, 2, 3};



    list = new DoublyLinkedList<Integer>(array);



    System.out.println(list);



  }

}

I am able to access the

DoublyLinkedList

without using an

import

statement. I would like for my code to look like this:

import vectors.DoublyLinkedList;



public class Application {



  public static void main(String[] args) {

    DoublyLinkedList<Integer> list;

    Integer[] array = {1, 2, 3};



    list = new DoublyLinkedList<Integer>(array);



    System.out.println(list);



  }

}

But, when I run

gradle build

with the above code, I get the following error:

> Task :compileJava

/Users/jod/java_data_structures/src/main/java/Application.java:1: error: package vectors does not exist

import vectors.DoublyLinkedList;

              ^

1 error





FAILURE: Build failed with an exception.

This is to be expected, as the structure of the

build/classes/java/main

folder has all the class files adjacent to each other without their respective folders. My

gradle.build

file follows:

apply plugin: 'java'

apply plugin: 'groovy'

apply plugin: 'application'



sourceCompatibility = 1.8

targetCompatibility = 1.8



mainClassName = "Application"



jar {

  baseName = 'java_data_structures'

  version = '0.0.1'

}



repositories {

  mavenCentral()

}



dependencies {

  testCompile(

    'junit:junit:4.12',

    'org.codehaus.groovy:groovy-all:2.4.4',

    'org.spockframework:spock-core:1.0-groovy-2.4',

    'org.springframework.boot:spring-boot:1.2.1.RELEASE',

    'cglib:cglib-nodep:2.2.2'

  )

}



javadoc {

  destinationDir = new File("${projectDir}/doc/javadoc")

  source = sourceSets.main.allJava

  classpath = configurations.compile

}

What do I need to do such that my folder hierarchy maintains the same? This is the structure I would like:

java_data_structures

├── build.gradle

├── build

|   ├── classes

|   |   ├── groovy

|   |   |   └── test

|   |   |       └── vectors

|   |   |           └── DoublyLinkedList.class

|   |   └── java

|   |       └── main

|   |           ├── Application.class

|   |           └── vectors

|   |               └── DoublyLinkedList.class

|   ├── distributions

|   └── other

|

└── src

    ├── main

    │   └── java

    │       ├── Application.java

    │       ├── graphs

    │       ├── maps

    │       ├── matricies

    │       ├── sets

    │       ├── trees

    │       ├── vectors

    │       |   └── DoublyLinkedList.java

    │       └── Application.java  

    └── test

        └── groovy

            └── vectors

                └── DoublyLinkedListSpec.groovy

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Answer 1

So as indicated in the comments on the question, the issue was a missing package vectors; in the DoublyLinkedList.java file.

Gradle not maintaining directory hierarchy on gradle build

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