Develop Reference

React Native: 'compileJava' task (current target is 1.8) and 'compileKotlin' task (current target is 11) jvm target compat

Hello everyone I am trying to create and run a react native app. I run
npx react-native init rn4 but when I run npm run android I have this error:
> Task :react-native-gradle-plugin:compileKotlin
'compileJava' task (current target is 1.8) and 'compileKotlin' task (current target is 11) jvm target compatibility should be set to the same Java version.
w: C:\Users\emanu\App\rn4\node_modules\react-native-gradle-plugin\src\main\kotlin\com\facebook\react\ReactExtension.kt: (10, 37): 'BaseVariant' is deprecated. Deprecated in Java
w: C:\Users\emanu\App\rn4\node_modules\react-native-gradle-plugin\src\main\kotlin\com\facebook\react\ReactExtension.kt: (119, 30): 'BaseVariant' is deprecated. Deprecated in Java
w: C:\Users\emanu\App\rn4\node_modules\react-native-gradle-plugin\src\main\kotlin\com\facebook\react\ReactExtension.kt: (135, 26): 'BaseVariant' is deprecated. Deprecated in Java
w: C:\Users\emanu\App\rn4\node_modules\react-native-gradle-plugin\src\main\kotlin\com\facebook\react\ReactExtension.kt: (155, 32): 'BaseVariant' is deprecated. Deprecated in Java
w: C:\Users\emanu\App\rn4\node_modules\react-native-gradle-plugin\src\main\kotlin\com\facebook\react\ReactExtension.kt: (161, 31): 'BaseVariant' is deprecated. Deprecated in Java
w: C:\Users\emanu\App\rn4\node_modules\react-native-gradle-plugin\src\main\kotlin\com\facebook\react\ReactExtension.kt: (169, 36): 'BaseVariant' is deprecated. Deprecated in Java
w: C:\Users\emanu\App\rn4\node_modules\react-native-gradle-plugin\src\main\kotlin\com\facebook\react\ReactPlugin.kt: (99, 48): 'reactRoot: DirectoryProperty' is deprecated. reactRoot was confusing and has been replace with rootto point to your root project and reactNativeDir to point to the folder of the react-native NPM package
w: C:\Users\emanu\App\rn4\node_modules\react-native-gradle-plugin\src\main\kotlin\com\facebook\react\TaskConfiguration.kt: (10, 37): 'ApplicationVariant' is deprecated. Deprecated in Java
w: C:\Users\emanu\App\rn4\node_modules\react-native-gradle-plugin\src\main\kotlin\com\facebook\react\TaskConfiguration.kt: (11, 37): 'BaseVariant' is deprecated. Deprecated in Java
w: C:\Users\emanu\App\rn4\node_modules\react-native-gradle-plugin\src\main\kotlin\com\facebook\react\TaskConfiguration.kt: (12, 37): 'LibraryVariant' is deprecated. Deprecated in Java
w: C:\Users\emanu\App\rn4\node_modules\react-native-gradle-plugin\src\main\kotlin\com\facebook\react\TaskConfiguration.kt: (28, 51): 'BaseVariant' is deprecated. Deprecated in Java
w: C:\Users\emanu\App\rn4\node_modules\react-native-gradle-plugin\src\main\kotlin\com\facebook\react\TaskConfiguration.kt: (131, 12): 'ApplicationVariant' is deprecated. Deprecated in Java
w: C:\Users\emanu\App\rn4\node_modules\react-native-gradle-plugin\src\main\kotlin\com\facebook\react\TaskConfiguration.kt: (132, 12): 'LibraryVariant' is deprecated. Deprecated in Java
w: C:\Users\emanu\App\rn4\node_modules\react-native-gradle-plugin\src\main\kotlin\com\facebook\react\TaskConfiguration.kt: (250, 14): 'BaseVariant' is deprecated. Deprecated in Java
> Task :react-native-gradle-plugin:compileJava
6 actionable tasks: 6 executed
Note: C:\Users\emanu\App\rn4\node_modules\react-native-gradle-plugin\src\main\java\com\facebook\react\codegen\generator\SchemaJsonParser.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
FAILURE: Build failed with an exception.
* Where:
Build file 'C:\Users\emanu\App\rn4\android\app\build.gradle' line: 1
* What went wrong:
A problem occurred evaluating project ':app'.
> Failed to apply plugin 'com.android.internal.application'.
> Android Gradle plugin requires Java 11 to run. You are currently using Java 1.8.
You can try some of the following options:
- changing the IDE settings.
- changing the JAVA_HOME environment variable.
- changing `org.gradle.java.home` in `gradle.properties`.
* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 59s
error Failed to install the app. Make sure you have the Android development environment set up: https://reactnative.dev/docs/environment-setup.
Error: Command failed: gradlew.bat app:installDebug -PreactNativeDevServerPort=8081
Note: C:\Users\emanu\App\rn4\node_modules\react-native-gradle-plugin\src\main\java\com\facebook\react\codegen\generator\SchemaJsonParser.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
FAILURE: Build failed with an exception.
* Where:
Build file 'C:\Users\emanu\App\rn4\android\app\build.gradle' line: 1
* What went wrong:
A problem occurred evaluating project ':app'.
> Failed to apply plugin 'com.android.internal.application'.
> Android Gradle plugin requires Java 11 to run. You are currently using Java 1.8.
You can try some of the following options:
- changing the IDE settings.
- changing the JAVA_HOME environment variable.
- changing `org.gradle.java.home` in `gradle.properties`.
* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 59s
at makeError (C:\Users\emanu\App\rn4\node_modules\execa\index.js:174:9)
at C:\Users\emanu\App\rn4\node_modules\execa\index.js:278:16
at processTicksAndRejections (node:internal/process/task_queues:96:5)
at async runOnAllDevices (C:\Users\emanu\App\rn4\node_modules\#react-native-community\cli-platform-android\build\commands\runAndroid\runOnAllDevices.js:109:5)
at async Command.handleAction (C:\Users\emanu\App\rn4\node_modules\#react-native-community\cli\build\index.js:192:9)
info Run CLI with --verbose flag for more details.
I also run cd android && ./gradlew clean and the output is:
FAILURE: Build failed with an exception.
* Where:
Build file 'C:\Users\emanu\App\rn4\android\app\build.gradle' line: 1
* What went wrong:
A problem occurred evaluating project ':app'.
> Failed to apply plugin 'com.android.internal.application'.
> Android Gradle plugin requires Java 11 to run. You are currently using Java 1.8.
You can try some of the following options:
- changing the IDE settings.
- changing the JAVA_HOME environment variable.
- changing `org.gradle.java.home` in `gradle.properties`.
This is the file in android/gradle/wrapper/gradle-wrapper.properties
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-all.zip
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
and this is the output when I run ./gradlew --version
------------------------------------------------------------
Gradle 7.3.3
------------------------------------------------------------
Build time: 2021-12-22 12:37:54 UTC
Revision: 6f556c80f945dc54b50e0be633da6c62dbe8dc71
Kotlin: 1.5.31
Groovy: 3.0.9
Ant: Apache Ant(TM) version 1.10.11 compiled on July 10 2021
JVM: 1.8.0_302 (Oracle Corporation 25.302-b08)
OS: Windows 10 10.0 amd64
I read similar posts but I haven't been able to fix it. With folders that I created some days ago I have no problem when I run the app.
Someone can help me please?
Very thanks!

If you are using React Native witch Chocolatey, you must update JDK version to 11.
In order to do the update, execute this in PowerShell (with admin privileges):
choco install -y openjdk11
After that, the first time (only the first time) you run npm android, you will get a lot of warnings, but the built of the project will work.
If you continue receiving an error, maybe you need to adjust the gradle version of your project to be compatible with the new JDK version.
You can achieve this by editing the file YOUR_PROJECT\android\gradle\wrapper\gradle-wrapper.properties
Update the version of distributionUrl to 7.4.2
I hope I have been helpful

The message is gone at last.
Before to that do the following [ iam using Mac]
Have JDK11 installed and HOME set
If you have any old version or have installed latest 18 and not as mentioned in the error. Then follow this URL to remove the the installation and ensure the path is set properly by following this [refer to the highest scored one]
Now to set the path follow this URL. Written by Arv
Now look for this file in android folder
android/.idea/compiler.xml and change the target set as "1.8" to "11"
run ./gradlew clean [run it twice..else same message will be visible]

I just installed jdk11 then run cd ./android/ && ./gradlew clean That works for me

openjdk11 v11.0.16.20220913 already installed.
node js version: v18.14.0
java version "19.0.2" 2023-01-17
Java(TM) SE Runtime Environment (build 19.0.2+7-44)
Java HotSpot(TM) 64-Bit Server VM (build 19.0.2+7-44, mixed mode, sharing)
still has same problem.
----------solved----------
update java and change environment variables location of JAVA_HOME
Add this to gradle.properties
org.gradle.java.home=C:\\Program Files\\Java\\jdk-18.0.2.1

Android Gradle plugin requires Java 11 to run. You are currently using Java 1.8.
Ultimately you need a newer version of Java to run this. There are many resources online to assist you with this. As it is recommending Java 11 I would stick with that. One place to get Java 11 for Windows is on the Oracle downloads site (as you currently have the Oracle build) but there are others related to OpenJDK too.

I was having this very same problem here. I tried MouTio's solution and updated the distributionUrl to 7.4.2 at Project-Name\android\gradle\wrapper\gradle-wrapper.properties but that still gave me this error here:
> Task :react-native-gradle-plugin:compileKotlin FAILED
'compileJava' task (current target is 1.8) and 'compileKotlin' task (current target is 11) jvm targeta version.
1 actionable task: 1 executed
FAILURE: Build failed with an exception.
What went wrong:
Execution failed for task ':react-native-gradle-plugin:compileKotlin'.
Failed to query the value of task ':react-native-gradle-plugin:compileKotlin' property 'compilerRun
Kotlin could not find the required JDK tools in the Java installation. Make sure Kotlin compilat
However the error was fixed after running this choco install -y nodejs-lts openjdk11 with a command line using administration privileges.
and don't forget to run npm run android with a refreshed terminal.

Task :react-native-gradle-plugin:compileKotlin
'compileJava' task (current target is 1.8) and 'compileKotlin' task (current target is 11) jvm target compatibility should be set to the same Java version.
Solution
Execute following commands
run cmd(Administrator) the past
choco install -y openjdk11

How to solve `General error during conversion: Unsupported class file major version 61` when install kafka

I'm trying to install kafka following the installation page from kafka's official site, and I encountered this error:
❯ cd kafka-3.0.0-src
❯ bin/zookeeper-server-start.sh config/zookeeper.properties
Classpath is empty. Please build the project first e.g. by running './gradlew jar -PscalaVersion=2.13.6'
❯ ./gradlew jar -PscalaVersion=2.13.6
Downloading https://services.gradle.org/distributions/gradle-7.1.1-all.zip
..............10%...............20%...............30%...............40%..............50%...............60%...............70%...............80%..............90%...............100%
Welcome to Gradle 7.1.1!
Here are the highlights of this release:
- Faster incremental Java compilation
- Easier source set configuration in the Kotlin DSL
For more details see https://docs.gradle.org/7.1.1/release-notes.html
Starting a Gradle Daemon (subsequent builds will be faster)
FAILURE: Build failed with an exception.
* Where:
Settings file '/Users/user/Downloads/kafka-3.0.0-src/settings.gradle'
* What went wrong:
Could not compile settings file '/Users/user/Downloads/kafka-3.0.0-src/settings.gradle'.
> startup failed:
General error during conversion: Unsupported class file major version 61
java.lang.IllegalArgumentException: Unsupported class file major version 61
at groovyjarjarasm.asm.ClassReader.<init>(ClassReader.java:189)
at groovyjarjarasm.asm.ClassReader.<init>(ClassReader.java:170)
at groovyjarjarasm.asm.ClassReader.<init>(ClassReader.java:156)
at groovyjarjarasm.asm.ClassReader.<init>(ClassReader.java:277)
at org.codehaus.groovy.ast.decompiled.AsmDecompiler.parseClass(AsmDecompiler.java:81)
at org.codehaus.groovy.control.ClassNodeResolver.findDecompiled(ClassNodeResolver.java:251)
at org.codehaus.groovy.control.ClassNodeResolver.tryAsLoaderClassOrScript(ClassNodeResolver.java:189)
...
1 error
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 31s
I suspect this is because of my gradle version, but I have no idea how to solve it.
I'm using java 17 runtime:
❯ pwd
/Users/user
❯ java -version
openjdk version "17.0.1" 2021-10-19
OpenJDK Runtime Environment (build 17.0.1+12-39)
OpenJDK 64-Bit Server VM (build 17.0.1+12-39, mixed mode, sharing)
And the os is MacOS 11.6.2

You do not need Gradle to install or run Kafka.
The page you linked to says to download a released tarball, not the sources. You could also brew install kafka (and Zookeeper) on a Mac, and use brew services start to run both.
Or you can use Docker

Cordova build error on google-service/firebase vs gradle or java

I'm using Cordova and when I run cordova build android it's throwing an error. Like several months ago, it was no problem building the APK. I think Java did auto update, causing an issue?
I suppose it has something to do with the com.google.gms:google-service and maybe the gradle? I've no clue.
This is the full terminal output:
% cordova build android
[Gradle Properties] Detected Gradle property "android.useAndroidX" with the value of "true", Cordova's recommended value is "false"
[Gradle Properties] Detected Gradle property "android.enableJetifier" with the value of "true", Cordova's recommended value is "false"
cordova-plugin-firebasex: Preparing Firebase on Android
Checking Java JDK and Android SDK versions
ANDROID_SDK_ROOT=undefined (recommended setting)
ANDROID_HOME=undefined (DEPRECATED)
Using Android SDK: /Users/<user>/Library/Android/sdk
Subproject Path: CordovaLib
Subproject Path: app
> Configure project :app
Adding classpath: com.google.gms:google-services:4.2.0
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
> Task :app:processDebugGoogleServices
Parsing json file: /Users/<user>/Sites/cordova/<projectname>/platforms/android/app/google-services.json
> Task :CordovaLib:compileDebugJavaWithJavac FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':CordovaLib:compileDebugJavaWithJavac'.
> java.lang.NullPointerException (no error message)
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/6.5/userguide/command_line_interface.html#sec:command_line_warnings
BUILD FAILED in 1s
21 actionable tasks: 5 executed, 16 up-to-date
Command failed with exit code 1: /Users/<user>/Sites/cordova/<project>/platforms/android/gradlew cdvBuildDebug -b /Users/<user>/Sites/cordova/<project>/platforms/android/build.gradle
Versions
javac -version
javac 1.8.0_292
------------------------------------------------------------
Gradle 6.9.1
------------------------------------------------------------
Build time: 2021-08-20 11:15:18 UTC
Revision: f0ddb54aaae0e44f0a7209c3c0274d506ea742a0
Kotlin: 1.4.20
Groovy: 2.5.12
Ant: Apache Ant(TM) version 1.10.9 compiled on September 27 2020
JVM: 11.0.12 (Homebrew 11.0.12+0)
OS: Mac OS X 11.3.1 x86_64
Thanks for any advice in advance!

Okay.. So I solved this part, but wanted to keep this post here for others who might run into the same problem.
Gradle
brew uninstall gradle#6 (because I manually installed this version)
brew install gradle (which is installing version 7.1.1 currently)
Cordova
cordova platform remove android (I was on 9)
cordova platform add android#10.1.0

Android Jitpack ERROR: No build artifacts found

So am trying to publish my library in maven but this error is keep popping up I hope someone can help me with this. I have upgraded to java 11 even then this error is coming. Even though I upgraded to java 11 it still says java 1.8 please help with that too. I have even seen similar questions but those answers arent helping me.
If you need my projects link here it is https://github.com/MohammedAbidNafi/iOS-Style-Alert-Dialog
Git:
2.0.5-0-ga1f04f4
Found Android manifest
Android SDK version: 30. Build tools: 30.0.3
Installing Android platform 30
Installing Build-tools 30.0.3
Found gradle
Gradle build script
Found gradle version: 7.0.2.
Using gradle wrapper
Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8 -Dhttps.protocols=TLSv1.2
Downloading https://services.gradle.org/distributions/gradle-7.0.2-bin.zip
Unzipping /home/jitpack/.gradle/wrapper/dists/gradle-7.0.2-bin/857tjihv64xamwrf0h14cai3r/gradle-7.0.2-bin.zip to /home/jitpack/.gradle/wrapper/dists/gradle-7.0.2-bin/857tjihv64xamwrf0h14cai3r
Set executable permissions for: /home/jitpack/.gradle/wrapper/dists/gradle-7.0.2-bin/857tjihv64xamwrf0h14cai3r/gradle-7.0.2/bin/gradle
------------------------------------------------------------
Gradle 7.0.2
------------------------------------------------------------
Build time: 2021-05-14 12:02:31 UTC
Revision: 1ef1b260d39daacbf9357f9d8594a8a743e2152e
Kotlin: 1.4.31
Groovy: 3.0.7
Ant: Apache Ant(TM) version 1.10.9 compiled on September 27 2020
JVM: 1.8.0_252 (Private Build 25.252-b09)
OS: Linux 4.18.0-25-generic amd64
Getting tasks: ./gradlew tasks --all
0m3.308s
Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8 -Dhttps.protocols=TLSv1.2
FAILURE: Build failed with an exception.
* Where:
Build file '/home/jitpack/build/app/build.gradle' line: 2
* What went wrong:
An exception occurred applying plugin request [id: 'com.android.application']
> Failed to apply plugin 'com.android.internal.application'.
> Android Gradle plugin requires Java 11 to run. You are currently using Java 1.8.
You can try some of the following options:
- changing the IDE settings.
- changing the JAVA_HOME environment variable.
- changing `org.gradle.java.home` in `gradle.properties`.
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 22s
Tasks:
WARNING:
Gradle 'install' task not found. Please add the 'maven' or 'android-maven' plugin.
See the documentation and examples: https://jitpack.io/docs/
Adding maven plugin
Found android library build file in iOSDialog
Running: ./gradlew clean -Pgroup=com.github.MohammedAbidNafi -Pversion=2.1 install
Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8 -Dhttps.protocols=TLSv1.2
> Configure project :
Gradle version Gradle 7.0.2
FAILURE: Build failed with an exception.
* Where:
Build file '/home/jitpack/build/app/build.gradle' line: 2
* What went wrong:
An exception occurred applying plugin request [id: 'com.android.application']
> Failed to apply plugin 'com.android.internal.application'.
> Android Gradle plugin requires Java 11 to run. You are currently using Java 1.8.
You can try some of the following options:
- changing the IDE settings.
- changing the JAVA_HOME environment variable.
- changing `org.gradle.java.home` in `gradle.properties`.
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
Deprecated Gradle features were used in this build, making it incompatible with Gradle 8.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/7.0.2/userguide/command_line_interface.html#sec:command_line_warnings
BUILD FAILED in 1s
Build tool exit code: 0
Looking for artifacts...
Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8 -Dhttps.protocols=TLSv1.2
Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8 -Dhttps.protocols=TLSv1.2
Looking for pom.xml in build directory and ~/.m2
2021-08-23T17:06:45.866754989Z
Exit code: 0
ERROR: No build artifacts found

How to fix Gradle not recognizing Java 10 on Linux?

When working with the latest Gradle version with Java 10 on Linux, it fails to identify version number of Java as 10 as valid Java version. How to fix this problem on Linux machines ? Log details of the error here
And here is the complete error report (N.B. Running gradle --version or gradle -v also gives the same output :
FAILURE: Build failed with an exception.
* What went wrong:
Could not determine java version from '10'.
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
EDIT :
Output of gradle --stacktrace
FAILURE: Build failed with an exception.
* What went wrong:
Could not determine java version from '10'.
* Try:
Run with --info or --debug option to get more log output.
* Exception is:
java.lang.IllegalArgumentException: Could not determine java version from '10'.
at org.gradle.api.JavaVersion.toVersion(JavaVersion.java:70)
at org.gradle.api.JavaVersion.current(JavaVersion.java:80)
at org.gradle.internal.jvm.UnsupportedJavaRuntimeException.assertUsingVersion(UnsupportedJavaRuntimeException.java:29)
at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:32)
at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:24)
at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)
at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)
at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:210)
at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:174)
at org.gradle.launcher.Main.doAction(Main.java:33)
at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:60)
at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:37)
at org.gradle.launcher.GradleMain.main(GradleMain.java:23)
Output of java --version
java 10 2018-03-20
Java(TM) SE Runtime Environment 18.3 (build 10+46)
Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10+46, mixed mode)

You need to upgrade Gradle. Version 4.5.1 and later definitely support Java 10.
If you think you have 4.5.1 or later installed, but gradle -version still won't run, it's possible that when you type gradle at the command line, it's still running an older version for some reason.
One common thing to do is alias gradle to ./gradlew, so that in the context of a Gradle project, you'll use the wrapper Gradle rather than the system Gradle. This is usually helpful, but in a situation like this, it backfires. You should be able to determine the installed system Gradle with which:
> which gradle
/usr/local/bin/gradle
> $(which gradle) -version
------------------------------------------------------------
Gradle 4.6
------------------------------------------------------------
Build time: 2018-02-28 13:36:36 UTC
Revision: 8fa6ce7945b640e6168488e4417f9bb96e4ab46c
Groovy: 2.4.12
Ant: Apache Ant(TM) version 1.9.9 compiled on February 2 2017
JVM: 10.0.1 ("Oracle Corporation" 10.0.1+10)
OS: Mac OS X 10.13.4 x86_64
(I've elided some warnings about illegal reflective access, if you get those, don't worry about them.)
If $(which gradle) -version still won't run, you need to upgrade the system gradle. But if it does, to update the Gradle wrapper, you can edit your build.gradle --
task wrapper(type: Wrapper) {
gradleVersion = '4.6'
}
-- and then use the system Gradle to rerun the wrapper task:
> $(which gradle) wrapper
Starting a Gradle Daemon (subsequent builds will be faster)
BUILD SUCCESSFUL in 7s
1 actionable task: 1 executed
> ./gradlew -version
Downloading https://services.gradle.org/distributions/gradle-4.6-bin.zip
......................................................................
[etc.]
------------------------------------------------------------
Gradle 4.6
------------------------------------------------------------
Build time: 2018-02-28 13:36:36 UTC
Revision: 8fa6ce7945b640e6168488e4417f9bb96e4ab46c
Groovy: 2.4.12
Ant: Apache Ant(TM) version 1.9.9 compiled on February 2 2017
JVM: 10.0.1 ("Oracle Corporation" 10.0.1+10)
OS: Mac OS X 10.13.4 x86_64

Take help of ppa and upgrade your gradle version , Ubuntu 17 comes with gradle sudo apt install gradle will install default gradle version.
to upgrade for java 10 need to run below command.
sudo add-apt-repository ppa:cwchien/gradle
sudo apt-get update
sudo apt upgrade gradle

Guys I Found the problem in this case. I installed gradle from the official debian repositories which contained an outdated version of gradle which didn't support Java 10. On downloading and installing Gradle from the official site and soft linking it to the /usr/bin/gradle , it worked just fine. So the problem essentially was installing gradle from the debian repositories which are currently outdated.