Help: I set environment variables echo% java_home% but can not print out the path

Such as the title

screenshot below you can print out the version of the


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try to re-open a window , it should be .
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picture looks clear enough

can click http://d3.freep.cn/3tb_13082111463428e5203960.jpg view


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newly opened window does it ... thank you


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newly opened window does it ... thank you   
  
 

dry arrived late ~ ~
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I open a new window to how or not ah !
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wrong, I installed the JDK is not configured environment variables configured just after it.