Eclipse on Mac 10.8 - Installed 1.7.0 JRE / JDK, but Eclipse won't launch

Question

• Installed Java SE 1.7.0u10 from Oracle w/ their installer package

• Downloaded and unpacked Eclipse Juno (4.2.1)

• Double click Eclipse

Answer 1

Hoping you are using 64-bit of Java SE 1.7.0 and so advising the following.

1. go to Eclipse->Preferences...->Java->Installed JREs
2. click Add...
3. Select Standard VM
4. paste /Library/Java/JavaVirtualMachines/1.7.0.jdk/Contents/Home into JRE home
5. Change the JRE name to something useful like Java SE 7
6. Click Finish
7. Check the check-box next to your newly created JRE.

You would need a restart.

Answer 2

open /Library/Java/JavaVirtualMachines/jdkXXXXX.jdk/Contents/Info.plist

settting(<string>BundledApp</string> is usefull!):

<key>JVMCapabilities</key>
<array>
　　<string>JNI</string>
　　<string>BundledApp</string>
　　<string>WebStart</string>
　　<string>Applets</string>
　　<string>CommandLine</string>
</array>

Answer 3

If you'd like to install Java 6 JDK only (no Java 7 JDK/JRE, no Java 6 JRE only), install the Apple OSX Java DMG (at time of writing, this was http://adcdownload.apple.com/Developer_Tools/java_for_os_x_2013003_developer_package/java_for_os_x_2013003_dp__11m4406.dmg).

You still won't be able to start Eclipse. Make a directory JavaVirtualMachines under /System/Library/Java. And then make an Alias of the java version folder at /Library/Java/JavaVirtualMachines and rename the alias 1.6.0.jdk and copy that alias to /System/Library/Java/JavaVirtualMachines/

After finished, you will have an Alias at /System/Library/Java/JavaVirtualMachines/1.6.0.jdk that points to the Java install directory at */Library/Java/JavaVirtualMachines/1.6.0_XX-XXX-XXX.jdk*

Answer 4

I had this problem and found that I did not have JDK installed on my Mac. Once I did that, Eclipse starts normally.

Answer 5

I had the exact same message when setting up a new mac and trying to run eclipse 4.2.2 with only Java SE 7 installed (as part of JDK 7u17).

In order to be able to successfully launch Eclipse I had to let OSX download and install Apple's Java SE 6 runtime first before installing the latest JDK.

After installing the JDK, the command java -version correctly shows:

java version "1.7.0_17"
Java(TM) SE Runtime Environment (build 1.7.0_17-b02)
Java HotSpot(TM) 64-Bit Server VM (build 23.7-b01, mixed mode)

Trying to solve the problem the other way around didn't work -- i.e. installing JDK 7u17 first before installing Java SE 6 as suggested in the message.

Answer 6

I had the exactly same problem some days ago and I solved it today. Just installed this http://support.apple.com/kb/dl1572

And after that, when I opened the eclipse the OSX installed some java update and opening eclipse by Eclipse.app started working.

Hope it works with you too.