To 'override', you can use something like (depends on which shell you're using on your mac): export JAVA_HOME=`/usr/libexec/java_home -v 17` To see all installed javas, you can run: /usr/libexec/java_home -V Also, yes, if you just run java without specifying which one you want, you so happen to get java13 here. the java8 to java9 transition broke a ton of stuff, much of it needless and much of it not reasonably expectable or fixable by libraries and apps, so a bunch of java apps and libraries only run on java8 - just an example). This is often required java is not backwards compatible (it tries to change little, but e.g. It offers a simple interface, which is easy to use, and a lot of customization options.Java doesn't mind if you install multiple versions. In conclusion, Megacubo is a great app that lets you access a lot of tv content and even tun-in radio stations if you are connected to the internet. There's even a Youtube section and you can power off your PC after a set amount of time. The channels that you have, can be modified with other custom packages and can even stream them from a custom URL, in case the channel is not found on the list. The software has a lot of channels that are very well organized in categories for children, news, sports, music, etc., and if you want, you can just tune in and listen to some radio. If you have a large monitor you can switch to full-screen mode or you can run mini-player mode which will place a smaller screen on your desktop, that's very helpful if you want to do other stuff on your computer. The interface is pretty simple and clean, most of the window represents the preview area, and you can even have the whole entire window for viewing while sliding the search bar. With applications like Megacubo, you may now watch everything you love online, even tune in to favorite radio stations and it can all be done from the comfort of your desktop. Megacubo: Great application for viewing your favorite TV channels and listen to Radio stations

For iphone instal Megacubo 17.0.1