It worked!Here is a simpler way, an AppleScript that removes the installation limits from Java for macOS 2017-001.
The script asks you to select the dmg file, opens the file, unpacks JavaForOSX.pkg, modifies the Distribution file and saves a new pkg file on Desktop, Java.pkg, that can be installed on Catalina.Code:set theDMG to choose file with prompt "Please select javaforosx.dmg:" of type {"dmg"} do shell script "hdiutil mount " & quoted form of POSIX path of theDMG do shell script "pkgutil --expand /Volumes/Java\\ for\\ macOS\\ 2017-001/JavaForOSX.pkg ~/tmp" do shell script "hdiutil unmount /Volumes/Java\\ for\\ macOS\\ 2017-001/" do shell script "sed -i '' 's/return false/return true/g' ~/tmp/Distribution" do shell script "pkgutil --flatten ~/tmp ~/Desktop/Java.pkg" do shell script "rm -rf ~/tmp" display dialog "Modified Java.pkg saved on desktop" buttons {"Ok"}
Thank you very match (from Spain)