The Oracle Java 11 installer is an easier installation, and works fine with JMRI, so we recommend you do that instead.
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JMRI versions before 4. We hope to have JMRI 4. To install JMRI 4. Depending on your system security settings, dragging it to Downloads, Documents or Desktop might not work. For example, you might to sometimes connect PanelPro to the Command Station on your layout, or other times have a configuration that doesn't use a layout connection so you can work with the program on a laptop away from the layout. PanelPro and DecoderPro save their Preferences separately, so they can be configured independently.
On a Mac, the different Preferences files take their name from the name of the application icon that's invoked.
This lets you create multiple copies of e. DecoderPro that each use their own, separate Preferences files. Let's say you want one called "CoolNewOne". Duplicate the DecoderPro application icon ctrl-click to get a popup menu and say duplicate, or select the icon and choose duplicate from the File menu in Finder. Change the duplicate's name. It's probably better to use a simple one-word name like "CoolNewOne" Double click your new icon, and off you go. If you want an icon in some other place, like on your desktop: Go to the JMRI folder and select the application icon.
From the file menu, select "Make Alias" Drag that new alias icon to it's new location, and optionally rename it. Note that renaming the alias alone does not cause the application icon to be renamed, so the alias will be using the same Preferences as the original. Thanks and congratulations to all who contributed! Additional information on copyright, trademarks and licenses is linked here. Site hosted by: Simply Hosting site status page. Download and install JMRI. Get the JMRI software Depending on how your Mac is set up, you might need to install Java : Let's try the easy way first.
If this starts up OK, you have Java installed. Move to the next step. If it opens a dialog box that offers to install Java, or takes you to the Java install web site, just follow those instructions. If that doesn't work, and you have a current macOS version, you can get the latest Java JRE installer as a free download at: java. After that download is complete, follow the included instructions to run the Java installer. More on Java versions and hardware requirements prompts for Java in your browser. Older Java installations typically are removed by a MmcOS update.
However, older Java applications are known to try and reinstall old stuff that might cause conflicts while running JMRI. See the instructions on how to check if this applies to your installation. Installation is complete.
Should I install the JRE or the JDK?
Debugging JMRI supports many different Mac computers, with several different kinds of processors, multiple macOS versions, and various layout hardware. Some combinations can cause trouble. Go to the disabling Java SE v6 instructions below. If you have a Java preference pane and the Java Control Panel opens separately go to the "Security" tab in the control panel.
If there is no Security tab you have an old version of Java SE v7 installed - update Java SE v7 first, then come back to these instructions. Set the 'Security Level' slider to "Very High". If you don't use Java untick "Enable Java content in the Browser".
Now go to the 'Update' tab and tick "Check for Updates Automatically". Now go to the 'General' tab, click "Settings…" under 'Temporary Internet Files' and untick "Keep temporary files on my computer" and click "Delete Files…". Click "OK". You are now also recommended to switch off Java in your web browsers. Would you like to install one now? Make sure no Java versions are ticked under "On". Then go to the 'Network' tab and untick "Keep temporary files for fast access" and click "Delete Files…".
Apple Safari 12 or later for macOS Only follow these instructions if you will never use Java on the internet. If you are unsure simply switch off Java in all your web browsers. NOTE : If there are multiple users on your computer you should remove the plug-in from each user account's Library. Here is an Apple technical bulletin link on how to re-enable the plugin.
If you need the full Java runtime you may download it directly from Oracle by going this webpage. It was removed because Apple believes you can use the new JAVA preference pane in your System Preferences to do this job now, but this is not the case. I Googled around and found a link.
After the install you find your Java Preferences.
Java Preferences missing after latest OS X Java update - CNET
Home Questions Tags Users Unanswered. Mountain Lion Not only have the preferences disappeared, so has java altogether! Chris Denesha Chris Denesha 91 3. This could definitely be fleshed out a bit more with detail.
Nothing from Oracle will reinstall Apple's outdated Java Preferences; there's no such prompt. Per Apple technical bulletin: Here is an Apple technical bulletin link on how to re-enable the plugin If you need the full Java runtime you may download it directly from Oracle by going this webpage. Mort Mort 3 9 The closing line of this answer has the potential to mislead but I refrain from voting, because Oracle is misleading.
Mac OS X Lion
See the hint in an answer to Why does the version of Java verified by Oracle differ from the version shown at the command line? I suppose in a broad sense you are correct. However, I am just providing the page itself via a link which has links to multiple iterations of Java in it's various forms i. I leave it to the user to choose which one they require.
Thanks, it restored the Java Preferences panel. When first time opening 1. Next I restarted my computer.