[NETBEANS-2638] NullPointerException within GradleBaseProjectBuilder

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 11.2
• Component/s: projects - Gradle

Environment

Linux

• Assignee: Laszlo Kishalmi
• Reporter: Lou Hamersly
• Created: 04/Jun/19 04:40
• Updated: 03/Nov/20 15:48
• Resolved: 30/Oct/19 05:15

Description

Encountered this error reported by NetBeans 11 with Groovy/Gradle plugin 1.0.1: 

java.lang.NullPointerException
 at java.base/java.util.AbstractCollection.addAll(AbstractCollection.java:351)
 at org.netbeans.modules.gradle.api.GradleBaseProjectBuilder.processDependencies(GradleBaseProjectBuilder.java:128)
 at org.netbeans.modules.gradle.api.GradleBaseProjectBuilder.build(GradleBaseProjectBuilder.java:75)
 at org.netbeans.modules.gradle.api.GradleBaseProjectBuilder$Extractor.extract(GradleBaseProjectBuilder.java:288)
 at org.netbeans.modules.gradle.GradleProjectCache.createGradleProject(GradleProjectCache.java:432)
 at org.netbeans.modules.gradle.GradleProjectCache.loadGradleProject(GradleProjectCache.java:257)
 at org.netbeans.modules.gradle.GradleProjectCache.access$100(GradleProjectCache.java:85)
[catch] at org.netbeans.modules.gradle.GradleProjectCache$ProjectLoaderTask.call(GradleProjectCache.java:348)
 at org.netbeans.modules.gradle.GradleProjectCache$ProjectLoaderTask.call(GradleProjectCache.java:326)
 at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
 at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
 at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
 at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
 at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)

This was encountered building the jme3-android-examples subproject located in this repository: https://github.com/jMonkeyEngine/jmonkeyengine 

Unfortunately some setup (Android SDK related) would be involved to reproduce (I may be able to help test), however since this appears to be "source set" related, glancing at the code I suspect it may have something to do with relative paths used in the build file. Build file used for the subproject is below. 

(Note  - the version number on the 4th/5th line was changed from 23 to 27 from the repo's version to bypass a compile issue. This NPE was encountered with the below build file.)

 

apply plugin: 'com.android.application'
android {
 compileSdkVersion 27
 buildToolsVersion "27.0.3"
lintOptions {
 // Fix nifty gui referencing "java.awt" package.
 disable 'InvalidPackage'
 abortOnError false
 }
defaultConfig {
 applicationId "org.jmonkeyengine.jme3androidexamples"
 minSdkVersion 15 // Android 4.0.3 ICE CREAM SANDWICH
 targetSdkVersion 22 // Android 5.1 LOLLIPOP
 versionCode 1
 versionName "1.0" // TODO: from settings.gradle
 }
buildTypes {
 release {
 minifyEnabled false
 proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
 }
 }
sourceSets {
 main {
 java {
 srcDir 'src/main/java'
 }
 assets {
 srcDir 'src/assets'
 srcDir '../jme3-testdata/src/main/resources'
 srcDir '../jme3-examples/src/main/resources'
 }
 }
 }
}
dependencies {
 compile fileTree(dir: 'libs', include: ['*.jar'])
 testCompile 'junit:junit:4.12'
 compile 'com.android.support:appcompat-v7:23.3.0'
compile project(':jme3-core')
 compile project(':jme3-android')
 compile project(':jme3-android-native')
 compile project(':jme3-effects')
 compile project(':jme3-bullet')
 compile project(':jme3-bullet-native-android')
 compile project(':jme3-networking')
 compile project(':jme3-niftygui')
 compile project(':jme3-plugins')
 compile project(':jme3-terrain')
 compile fileTree(dir: '../jme3-examples/build/libs', include: ['*.jar'], exclude: ['*sources*.*'])
// compile project(':jme3-examples')
}