Could not find tools.jar. Please check that C:\Program Files\Java\jre1.8.0_151 contains a valid JDK installation
Even though I manually configured JDK project structure file/Project structure it still shows this error FAILURE: Build failed with an exception.
`What went wrong: Execution failed for task ':sample:compileReleaseJavaWithJavac'.
Could not find tools.jar. Please check that C:\Program Files\Java\jre1.8.0_151 contains a valid JDK installation.`
I'm confused why it is still looking for C:\Program Files\Java\jre1.8.0_151 instead of JDK
At last, here I found the solution.
I added jdk path org.gradle.java.home=C\:\\Program Files\\Java\\jdk1.8.0_144 to gradle.properties file and did a rebuild. It works now.
ERROR: Could not find tools.jar. Please check that C:\Program Files\Java\jre1.8.0_121 contains a valid JDK installation
Copy tools.jar from C:\Program Files\Java\jdk1.8.0_121\lib to C:\Program Files\Java\jre1.8\lib.
It's resolved the problem now.
Just had this happen to me.
Apparently Java's automatic updater installed and configured a new version of the JRE for me, while leaving the old JDK intact. So even though I did have a JDK, it didn't match the currently "active" JRE, which was causing the error.
Download a matching version of the JDK to the JRE you currently have installed, (In OP's case 151) That should do the trick.
I had the same problem and fixed it like this:
- Install the JDK from the Oracle website with the same version number as the JRE if you didn't already.
- Furthermore add JAVA_HOME to the environment variables of Windows.
- Restart your terminal or development environment to load the new JAVA_HOME value.
