My matlab does not work

I bough a matlab2015a this evening and installed it. I open it and do not input anything, but it displays a lot of warning information in the command window. Worse still, I cannot close it by clicking "x" on the upper right hand side.

When I input "clear all" in the command window, it displays "尝试将 SCRIPT clear 作为函数执行:D:\\toolbox\matlab\general\clear.m". (I want to use English version, but I don't know why it is a Chinese version).

When I press "setpath" button, it displays “出错 pathtool (line 11) error(javachk('swing', mfilename));”

[per isakson]

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Answer 1

[Image Analyst]

FAQ: http://matlab.wikia.com/wiki/FAQ#After_installation.2C_MATLAB_crashes_or_gives_an_error_message_when_I_try_to_run_MATLAB.