downloaded installed Java18 -- but not showing up in java -version in Terminal

[Straitsfan]

Hope this is the right place. Just downloaded and installed Java18, but when i enter java -version in the Terminal app it says I still have Java 1.8 (or Maybe Java 8). Can someone out there tell me what's wrong and what I can do to fix this?

 

[pm-r]

Just downloaded and installed Java18, but when i enter java -version in the Terminal app it says I still have Java 1.8 (or Maybe Java 8). Can someone out there tell me what's wrong and what I can do to fix this?

If I may ask, for what and why would one want or need to download Java on a Mac in this day and age??

I don't mean to be rude and I am just rather curious as I thought it had died along with any support several years ago, yet I see there is a version of it available for Mac use:

https://www.java.com/en/download/

https://www.java.com/en/download/apple.jsp

Or is it still used as some sort of developer thing???

Thanks for any Mac OS enlightenment.


- Patrick
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[Straitsfan]

I download it from the oracle website. I'm learning java.

 

[pm-r]

I download it from the oracle website. I'm learning java.

Thanks, and good luck with your learning and Java programming.

I was a bit surprised to read all these hits considering how Java has been treated on the Mac platform when I used Google to ask the question:

Google Search

- Patrick
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[Straitsfan]

so do you know how to set java18 as the default version?

 

[Raz0rEdge]

Install Homebrew instead and install openjdk as opposed to the licensed Oracle Java. It'll come to the same thing and easier to manage.

The other option is to use an IDE like IntelliJ IDEA and then have it download the Java SDK on its own for use in your projects.

 

[Straitsfan]

But in the past i've been able to download and install the Oracle java and it automatically updates to the latest version.

 

[Raz0rEdge]

I'm not saying that the Oracle version won't work. Back in the day, you could also just as easily do "java -version" on the Terminal prompt and if Java wasn't installed, macOS would show you a pop-up allowing you to download it. That doesn't happen anymore.

If your goal is to learn Java, can use it from a local folder without having it installed globally and since you'll need an IDE to code anyway, why not combine all that together.

 

[Straitsfan]

So are there any commands you know of that will let me set out as the default? It’s on the Java folder, but I’m not sure how to set it as the default

 

[pjhutch]

The current version of Java is 8.0.333. I would ignore the 1.8.0_333 as it refers to exactly the same version of Java. To develop java applications you really need to use the JDK version (Java Development Kit) which comes with the Runtime and the Compiler tools. You can download the non-commercial version of JDK from OpenJDK JDK 18.0.2 GA Release and it should be installed/copied to /Library/Java/JavaVirtualMachines where macOS will auto look there for you. You can set the which version of Java to use by setting JAVA_HOME variable:

How to set JAVA_HOME in Mac permanently?

I am trying to set JAVA_HOME by entering export JAVA_HOME=/Library/Java/Home at terminal. It sets the JAVA_HOME for current session. How can I set it permanently?

stackoverflow.com

 

[Straitsfan]

The problem has been solved. I updated to high Sierra, and when I entered Java – version job at 18.0.2 came up.

So obviously there was something in El Capitán that prevented it from seeing the Most current Java version I had installed and downloaded, so does anyone have any ideas why that was? I’m just curious and would like to know if anybody has any answers or ideas.

 

[pm-r]

I’m just curious and would like to know if anybody has any answers or ideas.

Maybe someone at the Apple Developer forums or similar might know..???


- Patrick
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