问题
I have a mac system. Whenever i try to open java JMC, it doesn't open. I can just see maximise, minimise and close buttons for the dialog box. The jdk version im using is jdk1.8.0_191.jdk.
回答1:
This is unfortunately a bug that we recently discovered, caused by incompatibilities between old Eclipse/SWT versions and new fixes done in JDK 8u152 (backported from JDK 9).
Workaround is to run older version of JDK 8, or the latest version of JDK 7 (which includes the same version of JMC). JDK 9 also works, with the new JMC 6 included.
(Oracle Internal) bug reference: JMC-5139
or
There's a workaround for this, as mentioned by @jwatkins in a comment.
Download the swt cocoa jar from here.
Go to JDKs jmc path (You can find this path by right-clicking on jmc icon in the dock -> Options -> Show in Finder, Then right click on App -> Show Package Contents).
For example: cd
/Library/Java/JavaVirtualMachines/jdk<version>.jdk/Contents/Home/lib/missioncontrol
Back up exisiting jar using sudo mv
plugins/org.eclipse.swt.cocoa.macosx.x86_64_3.103.1.v20140903-1947.jar
../
Copy downloaded zip's swt.jar using sudo cp ~/Downloads/swt.jar
plugins/org.eclipse.swt.cocoa.macosx.x86_64_3.103.1.v20140903-1947.jar
Restart jmc
it works for 1.8.0_171
来源：https://stackoverflow.com/questions/53390640/not-able-to-open-jmc-for-java-version-jdk1-8-0-191-jdk