Develop Reference

Gradle detects Java 1.8 instead of Java 11

When creating a new project with
npx react-native init newProject
and start the app by
npx react-native run-android
I will receive this error:
FAILURE: Build failed with an exception.
* Where:
Build file 'C:\Users\path\newProject\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.
Your current JDK is located in C:\Program Files\OpenJDK\openjdk-8u292-b10\jre
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 11s
error Failed to install the app. Make sure you have the Android development environment set u
Error: Command failed: gradlew.bat app:installDebug -PreactNativeDevServerPort=8081
./gradlew --version
------------------------------------------------------------
Gradle 7.5.1
------------------------------------------------------------
Build time: 2022-08-05 21:17:56 UTC
Revision: d1daa0cbf1a0103000b71484e1dbfe096e095918
Kotlin: 1.6.21
Groovy: 3.0.10
Ant: Apache Ant(TM) version 1.10.11 compiled on July 10 2021
JVM: 1.8.0_292 (Oracle Corporation 25.292-b10)
OS: Windows 10 10.0 amd64
I have tried it with other gradle versions and other react native versions, but the error still persists. Existing projects are working...

You need to install Java 11 on your system and update the JAVA_HOME and PATH variables on your system.
If you are using Windows, you can add or update it under environment variables. For Linux-based systems, you can just add these commands to to your profile file:
export JAVA_HOME="java11path"
export PATH=$JAVA_HOME/bin:$PATH

Gradle: use -source 15 or higher to enable text blocks

Not a java dev touching java for the first time, can't get gradle to work.
I'm trying to install this extension for Ghidra. The readme says I should run:
GHIDRA_INSTALL_DIR=${GHIDRA_HOME} gradle
I've installed java 18 and gradle on a mac. When running the above, I get the following error:
Starting a Gradle Daemon (subsequent builds will be faster)
> Task :copyDependencies NO-SOURCE
> Task :compileJava FAILED
/home/gradle/project/src/main/java/ghidra/app/plugin/core/analysis/eBPFSolanaAnalyzer.java:156: error: text blocks are not supported in -source 11
func.setComment("""
^
(use -source 15 or higher to enable text blocks)
1 error
FAILURE: Build failed with an exception.
Tried running out of docker too (thinking it was a problem with my installation):
docker run --rm -u gradle -e GHIDRA_INSTALL_DIR=/home/gradle/project/installed -v "$PWD":/home/gradle/project -w /home/gradle/project gradle gradle
But alas get the exact same error.
Why does gradle think I have Java 11 when in fact I have java 18? gradle -v gives me:
------------------------------------------------------------
Gradle 7.4.2
------------------------------------------------------------
Build time: 2022-03-31 15:25:29 UTC
Revision: 540473b8118064efcc264694cbcaa4b677f61041
Kotlin: 1.5.31
Groovy: 3.0.9
Ant: Apache Ant(TM) version 1.10.11 compiled on July 10 2021
JVM: 18.0.1.1 (Homebrew 18.0.1.1+0)
OS: Mac OS X 12.4 x86_64
This is probably total newb question but like I said I've never touched java:) Any help super appreciated.

The error means that the project has been configured to be compatible with Java 11, which is why you can't use features from newer versions (even if you run with a newer version).
While I don't know the Ghidra project, you can see from the build file in the extension that it applies a script from the base project:
apply from: new File(ghidraInstallDir).getCanonicalPath() + "/support/buildExtension.gradle"
Then, if you head over to the Ghidra project and find the extension file, you can see that it indeed configures the source and target version:
compileJava {
sourceCompatibility = ghidraProps.getProperty('application.java.compiler')
targetCompatibility = ghidraProps.getProperty('application.java.compiler')
dependsOn copyDependencies
}
These appear to come from the properties file located in Ghidra/application.properties:
application.name=Ghidra
application.version=10.2
application.release.name=DEV
application.layout.version=1
application.gradle.min=6.8
application.java.min=11
application.java.max=
application.java.compiler=11
So I would imaging that if you find this file in your local installation, you can change the application.java.compiler property to 18. Just be aware that Ghidra might not not actually support it - or it might work just fine; try it out :)

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