What Exactly Is "tools.jar" In The Android Sdk?

So, I've been trying to build a project in LibGDX for about 10 hours now. In case you'r unfamiliar, LibGDX is one of those platforms where you specify a project directory at the st

Solution 1:

Try copying tools.jar from %JAVA_HOME\lib to Android Studio\lib

Solution 2:

For me, copying tools.jar to Android lib folder alone didn't solve my problem.

But I also had to create a System Variable 'JAVA_HOME' in Windows Environment Variables with path to the latest JDK folder.

Restarted Android Studio, and this solved by problem.

Solution 3:

In my case, I have five jdk and some have tools.jar and other not, my solution is copy paste this tools.jar in all lib of jdk.

Solution 4:

My Android Studio Version: 4.2.1

The "tools.jar" is provided by Oracle JDK which is required by android studio for compilation - I have faced this issue after updating android studio to latest version in my PC.

To Resolve the issue follow below steps:

1. In Android studio File -> Project Structure -> SDKs (Under Platform Settings)

   A) Add JDK path by pressing '+' symbol in middle pane if suppose JDK/JDK home path is not present in the middle pane already (Middle pane also contains the Downloaded Android SDK's)

   B) Java sdk will be usually present/installed in the path 64 bit => "C:\Program Files\Java\jdk1.X.Y_ABC" (In my PC it is 1.8.0_202) or 32 bit => "C:\Program Files (x86)\Java\jdk1.X.Y_ABC"

2. If suppose you don't have JDK installed in your PC, please download and install from Oracle Java website https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html

3. Set JDK and JRE Path(Download both from webpage mentioned in step 2) in system environment variable

   A) Press windows key type "Edit the system environment variables" and open the application

   B) Go to Advanced -> Environment Variables Under system variables add JAVA_HOME and JRE_HOME as below

   Set Windows system environment variable

4. Add jdk lib path on the Path environment variable under user variables (this step is required only if the error not resolves with the previous steps) C:\Program Files\Java\jdk1.X.Y_ABC\lib