I downloaded the Oracle SQLDeveloper, but when I opened it, it said that it requires a minimum of Java 8 and gave me the website for the download. I went on and downloaded Java
SQL Developer runs this which checks for java 9 then 8. We don't yet support (lack of a ton of testing) java 10. You went to new for us. Back up to 8 or 9 and should be fine.
We use /usr/libexec/java_home
which allows us to specify which version of java we'd like to run. So even if you have N javas installed, it should return the highest one that was passed in with flags.
#!/bin/bash
##### THIS IS CHECKING FOR JAVA 9 #####
TMP_PATH=`/usr/libexec/java_home -F -v 9`
if [ -z "$TMP_PATH" ] ; then
##### THIS IS CHECKING FOR JAVA 8 #####
TMP_PATH=`/usr/libexec/java_home -F -v 1.8`
if [ -z "$TMP_PATH" ] ; then
osascript -e 'tell app "System Events" to display dialog "SQL Developer requires a minimum of Java 8. \nJava 8 can be downloaded from:\n http://www.oracle.com/technetwork /java/javase/downloads/"'
exit 1
fi
fi