Ugh sorry. I just typed in Java update and tried updating it from there and it said I was up to date. Anyway I updated and got this error now.
Could not determine java version from '12'.
FAILURE: Build failed with an exception.
* What went wrong:
Could not resolve all dependencies for configuration ':forgeGradleUserDevPackage'.
> Could not resolve net.minecraftforge:forge:1.12.2-14.23.5.2768.
Required by:
com.yourname.modid:forge-1.12.2-14.23.5.2768-mdk:1.0
> Could not resolve net.minecraftforge:forge:1.12.2-14.23.5.2768.
> Could not get resource 'https://files.minecraftforge.net/maven/net/minecraftforge/forge/1.12.2-14.23.5.2768/forge-1.12.2-14.23.5.2768.pom'.
> Could not GET 'https://files.minecraftforge.net/maven/net/minecraftforge/forge/1.12.2-14.23.5.2768/forge-1.12.2-14.23.5.2768.pom'.
> sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
help please!