'android-24' requires JDK 1.8 or later to compile

Question

I use Android Studio and recently got the error:

Error:Execution failed for task \':app:compileDebugJavaWithJavac\'. compileSdkVersion \'android-24\' re

Answer 1

I was also running into the same issue from the command line on my Windows, it shows the same hint.

Error:Execution failed for task ':app:compileDebugJavaWithJavac'. `compileSdkVersion 'android-24' requires JDK 1.8 or later to compile.`

check JDK location in Project Structure.

In Android Studio open: File > Project Structure > see if JDK location points to your JDK 1.8 directory.

It should look like

JDK Location
C:\Program Files\Java\jdk1.8.0_91

I already set the correct location to JDK.

check the java version

D:\AndroidSelfTrainingProject\CustomBuildIdDemo>java -version
java version "1.8.0_91"
Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)

check the gradle version

.D:\AndroidSelfTrainingProject\CustomBuildIdDemo>gradle -v

------------------------------------------------------------
Gradle 2.10
------------------------------------------------------------

Build time:   2015-12-21 21:15:04 UTC
Build number: none
Revision:     276bdcded730f53aa8c11b479986aafa58e124a6

Groovy:       2.4.4
Ant:          Apache Ant(TM) version 1.9.3 compiled on December 23 2013
JVM:          1.7.0_79 (Oracle Corporation 24.79-b02)
OS:           Windows 7 6.1 amd64

JVM version should be 1.8. To fix it, we can add in the gradle.property In gradle.properties in the .gradle directory in your HOME_DIRECTORY set org.gradle.java.home=/path_to_jdk_directory. As for me, it is like:

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

To verify if it is set right, we can make a gradle build task.

D:\AndroidSelfTrainingProject\CustomBuildIdDemo>gradle build
To honour the JVM settings for this build a new JVM will be forked. Please consider using the daemon
: https://docs.gradle.org/2.10/userguide/gradle_daemon.html.

To run dex in process, the Gradle daemon needs a larger heap.
It currently has approximately 910 MB.
For faster builds, increase the maximum heap size for the Gradle daemon to more than 2048 MB.
To do this set org.gradle.jvmargs=-Xmx2048M in the project gradle.properties.
For more information see https://docs.gradle.org/current/userguide/build_environment.html