Java – Ionic Build can’t find JDK set in JAVA_HOME even though it is the only Java install


When I installed Java JDK 1.8.x it initially was working, when I rebooted the next day after shutting down over night I get this when I build:

$ ionic build android
Updated the hooks directory to have execute permissions
Running command: d:\installs\nodejs\node.exe d:\htdocs\publicworks\mobile\hooks\after_prepare\010_add_platform_class.js d:/htdocs/publicworks/mobile
add to body class: platform-android
Running command: d:\htdocs\publicworks\mobile\platforms\android\cordova\build.bat
JAVA_HOME=C:\Program Files\Java\jdk1.8.0_45\bin
Running: d:\htdocs\publicworks\mobile\platforms\android\gradlew cdvBuildDebug -b d:\htdocs\publicworks\mobile\platforms\android\build.gradle -Dorg.gradle.daemon=true

ERROR: JAVA_HOME is set to an invalid directory: C:\Program Files\Java\jdk1.8.0_45\bin

Please set the JAVA_HOME variable in your environment to match the
location of your Java installation.

                    throw e;
Error code 1 for command: cmd with args: /s /c "d:\htdocs\publicworks\mobile\platforms\android\gradlew cdvBuildDebug -b d:\htdocs\publicworks\mobile\platforms\android\build.gradle -Dorg.gradle.daemon=true"

But Java is most definitely installed in this directory and nowhere else??? In my terminal:

java -version

Produces the proper output for my JDK:

java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b15)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)

The environment variables are set to:


C:\Program Files\Java\jdk1.8.0_45\bin

and the path contains:


Any suggestions?

Best Solution

JAVA_HOME should be set to the home directory of java and not to bin. So replace this:

C:\Program Files\Java\jdk1.8.0_45\bin


C:\Program Files\Java\jdk1.8.0_45

java/bin dir is added to PATH system variable to run java from anywhere.

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