Execution failed for task ':app:compileDebugJavaWithJavac'. > Could not find tools.jar

Question

I get this error while executing

react-native run-android

I have tried copying tools.jar file to JRE installation location, reinstalled JD

Answer 1

For MacOS, here are the steps:

1. Get Current java version ( recommended 1.8 ):

$ java -version  
java version "1.8.0_271"
Java(TM) SE Runtime Environment (build 1.8.0_271-b09)
Java HotSpot(TM) 64-Bit Server VM (build 25.271-b09, mixed mode)

2. CD to your Java home path

$ cd /Library/Java/JavaVirtualMachines
$ ll
total 0
drwxr-xr-x  3 root  wheel    96B 24 Out 09:24 adoptopenjdk-15-openj9.jre
drwxr-xr-x  3 root  wheel    96B 30 Dez 20:18 jdk1.8.0_271.jdk

3. CD to the current java home shown at step 1 (" java 1.8.0_271" ):

$ cd jdk1.8.0_271.jdk/Contents/Home

4. Copy the current path to clipboard:

$ pwd | pbcopy   

5. Finally, open the gradle.properties file (here I'm using VSCode) and set the org.gradle.java.home variable:

org.gradle.java.home=<path_to_current_java_home>

Her is an working example:

Answer 2

Add this to gradle.properties:

org.gradle.java.home=C:\\Program Files\\Java\\jdk1.8.0_91

Don’t forget to use double back slashes. For example:

org.gradle.java.home=C:\\Program Files\\Java\\jdk1.8.0_144\