macos - SQL Developer Can't locate Java on Mac OS

I have downloaded Oracle SQL Developer and when I attempt to run it i get the following message:

These are the java settings on my computer:

1. java -version: java version "12.0.1" 2019-04-16


2. "/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java" -version : java version "1.8.0_211"
   Java(TM) SE Runtime Environment (build 1.8.0_211-b12)
   Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode)


3. which java: /usr/bin/java


4. echo $JAVA_HOME: blank


5. On the Java control panel in System preferences, the JRE path is: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java

How can I get SQL developer to recognise my Java installation?