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I want to use the JRE 1.7 that I downloaded from Oracle website.

So I correctly install the .pkg file, and when I try /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java -version in the terminal I get this :

java version "1.7.0_11" Java(TM) SE Runtime Environment (build 1.7.0_11-b21) Java HotSpot(TM) 64-Bit Server VM (build 23.6-b04, mixed mode)

But in Eclipse I can't use anything else than JRE 1.6. When I go in Properties > Java Build Path > Add Library > JRE System Library, I can't find the 1.7 (there is only option for it : JavaSE-1.7 (unbound) with this issue :

No JREs in workspace compatible with specified execution environment: JavaSE-1.7

What should I do ? Thanks

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  • Did you read this? Commented Jan 15, 2013 at 16:23
  • 1
    This was exactly the same question I had. Ian Roberts's answer solved my problem. Thanks! Commented Nov 29, 2013 at 3:36
  • 4
    This seems to be a pretty common problem. Why on Earth would you close it? Commented Jul 21, 2015 at 1:01

3 Answers 3

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The download from java.com which installs in /Library/Internet Plug-Ins is only the JRE, for development you probably want to download the JDK from http://www.oracle.com/technetwork/java/javase/downloads/index.html and install that instead. This will install the JDK at /Library/Java/JavaVirtualMachines/jdk1.7.0_<something>.jdk/Contents/Home which you can then add to Eclipse via Preferences -> Java -> Installed JREs.

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Thanks, in Eclipse Kepler Project>Properties>Java Build Path>Add Library>JRE System Library>Installed JREs>Add and worked with e.g.: /Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home
Also! When adding an installed JRE to Eclipse, Eclipse can also "search" for installed JREs. That's how I got Eclipse to connect to my existing installation of 1.7 JDK.
OH WOW! I spent about 4 hours on this... I installed like 3 different Eclipse's, Java 1.7 and 1.8... all it took was a damn "search" button !!
For some reason, Java 1.6 was installed under /System/Library on my machine, but the Oracle installer put 1.7 under simply /Library. Kind of threw me at first, and the Search... button didn't find the 1.7 install. FYI.
@Marvo yes, only software from Apple is allowed to install itself under /System. Third-party software (which includes Oracle Java) has to go elsewhere.
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Try editing your eclipse.ini file and add the following at the top

-vm /Library/Java/JavaVirtualMachines/jdk1.7.0_09.jdk/Contents/Home

Of course the path may be slightly different, looks like I have an older version...

I'm not sure if it will add itself automatically. If not go into

Preferences --> Java --> Installed JREs

Click Add and follow the instructions there to add it

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Thank you for this. I am really surprised how tough it is to find information on installing and using java. Coming from other open source projects back to using java for now, I am very used to an active, engaged community providing tons of useful information.
It worked with '/Library/java/JavaVirtualMachines/jdk1.8.0_77.jdk/contents/Home/bin' , not this one : '/Library/java/JavaVirtualMachines/jdk1.8.0_77.jdk/contents/Home'
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You need to tell Eclipse which JDK/JRE's you have installed and where they are located.

This is somewhat burried in the Eclipse preferences: In the Window-Menu select "Preferences". In the Preferences Tree, open the Node "Java" and select "Installed JRE's". Then click on the "Add"-Button in the Panel and select "Standard VM", "Next" and for "JRE Home" click on the "Directory"-Button and select the top level folder of the JDK you want to add.

Its easier than the description may make it look.

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