could not find the required version of the Java(TM)2 Runtime Environment in '(null)'的解决办法。
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win7系统64位 j2ee 的jdk不能安装， 已经安装了jre
参考技术A 安装JDK配置环境变量：我的电脑》属性》高级系统设置》高级》环境变量
系统变量中新建：
JAVA_HOME : D:\Program Files\Java\jdk1.6.0_31
Path : ;%JAVA_HOME%\bin; （如果前面有值记得添加；）
用户变量添加
CLASSPATH : .; %JAVA_HOME%\lib\tools.jar
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