Win7 : 'java' is not recognized as internal or external command,

Java application is not working in Win 7 64-bit

http://answers.microsoft.com/en-us/windows/forum/windows_7-windows_programs/java-application-is-not-working-in-win-7-64-bit/ce5c7f03-1033-4c57-a013-b3a767f3ddac

Method 1:

Check to see if you have the latest Java updates from the following link.

Download Free Java Software

http://java.com/en/download/index.jsp

Method 2:

You may also try to re-register the jscript.dll file. This can be done by executing the following steps:

a)         Click Start.

b)         Click Run.

c)          In the Run box, type in (without quotes) "regsvr32 jscript.dll" and click onOK.

You should receive a popup says that it registration succeeded.

For your reference: http://answers.microsoft.com/en-us/ie/forum/ie8-windows_7/internet-explorer-8-64-bit-on-windows-7-x64-with/a51686b0-6280-4a21-ad2e-fa131d9019dd



需要重啟！！！

java -version

javac xxx.jar