How to run an app that require Java SDK on macOS Catalina 10.15

To switch to another JVM, try to modify the JAVA_HOME and PATH shell environment variable in ~/.profile.

# in ~/.profile
# switch to another JVM (here, 1.7)
unset JAVA_HOME PATH
export JAVA_HOME="$(/usr/libexec/java_home -F --version 1.7 2>/dev/null)"
export PATH="${JAVA_HOME}/bin:${PATH}"

# general info on Java preferences
open -a 'Java Preferences'

The dialog is shown because Oracle's Java has only partial 'JVMCapabilities' set and advertises itself as command-line-only capable.

As a superuser (use 'sudo' if editing in Terminal), you should edit /Library/Java/JavaVirtualMachines/jdk.1.7.[version-and-release].jdk/Contents/Info.plist and find the following key:

<key>JVMCapabilities</key>
  <array>
    <string>CommandLine</string>
  </array>

and add it to include the missing values:

<key>JVMCapabilities</key>
  <array>
    <string>CommandLine</string>
    <string>JNI</string>
    <string>BundledApp</string>
  </array>

After that, you have to either reboot, logout or killall Finder, what ever seems to work. (People have reported that restarting Finder was enough, but I had to log out.)

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Source.