Will update this with commands to paste to do the fix above
Umm, what is happening? Did you apply the execute flag via chmod command and replace the internal jre folder with a new one? MacOS version? Right click on the app, "Show Package Contents", open Contents folder, open MacOS folder, in your Dock on the left is Finder, on the right of it is Launchpad, once you click on that, search for "Terminal" until you see the Terminal application and click on it. In Finder, drag the file inside the (opened) MacOS folder in the Terminal window, and with Terminal active (in the foreground aka click on the Terminal window or click on the app in the Dock) then hit the enter / return key. Any errors?