Cannot open matlab on Mac OS 10.10, java exception showed up?

I used Matlab on my computer before, but now I cannot open it. I dont know why. The screen shot when I open my matlab is as:

Everytime I open it, it showed this image, can anyone comment on my problem ?

[Geoff Hayes]

Zheng - Did you just upgrade your OS X to 10.10? Which version of MATLAB are you using?

[Zheng]

I update my OS X to 10.10 like a month ago, I am using MATLAB 2014a.

[Geoff Hayes]

Have you used MATLAB since the update? See http://www.mathworks.com/matlabcentral/answers/159016-is-matlab-compatible-with-mac-os-x-10-10-yosemite which may provide some guidance.

[Aaron]

You need to run the latest version of Matlab 2014b