Choose JDK location in Android Studio

Question

I want to use JDK 8 in my project, but in Android Studio 4.2.1 I can't choose JDK 8 when selecting a menu item "JDK Location". A window is displayed with the message: "Please choose a valid JDK11 directory".

displayed window

Answer 1

You can still work in Android Studio 4.2 with Java 8.

For that you don't need to change JDK

just set Java 8 compability in app/build.gradle file

android {
    ...

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

UPDATE

add following dependencies to app/build.gradle

dependencies {
    // JAX-B dependencies for JDK 9+
    implementation "jakarta.xml.bind:jakarta.xml.bind-api:2.3.2"
    implementation "org.glassfish.jaxb:jaxb-runtime:2.3.2"
}

Answer 2

you can uninstall your jdk11 and install JDK 8 for that project to set and finally upgrade the protect to the new version with java 11 codes.