Error: Source option 6 is no longer supported. Use 7 or later?

Re
1

I want to work with the Minecraft Modcoderpack and have downloaded the associated file (version 1.8.8) and executed the decompile.bat. After a while the error: Source option 6 is no longer supported appears. Use 7 or later

After a bit of googling, I found out that it seems that it is because the JDK is a version that is too new from me, and you have to downgrade it. However, I can't download older JDK's without an Oracle account, can I?

So 2 questions:

Do I have to downgrade my JDK with such an error?
Where can I get older JDK versions from?

co

I would simply download a newer version of the pack:

http://www.modcoderpack.com/

Hopefully this should work with Java 7.

Minecraft OptiFine 1.16.4 error code? su sudanHelmet
  • 2 answers
Minecraft always crashes when starting what to do? Em Emileetemper
  • 6 answers
Script Error Message? Sh Shockbakery71
  • 1 answer
Friend can't access Minecraft Forge server? Ar AronButterfly
  • 1 answer
Minecraft server crash? - 1 wi wildermya
  • 2 answers
How can I fix these errors in the BAT file? Ru Russian29
  • 5 answers
Auto-craft Minecraft?

Auto-craft Minecraft?
PC programs stutter despite a good PC?

PC programs stutter despite a good PC?
Girlfriend not coming into my world, Minecraft?

Girlfriend not coming into my world, Minecraft?