因为您需要在 Java Preferences 窗格中输入并以这种方式仅标记 JVM 7 :

Because you need to enter in Java Preferences pane and flag only the JVM 7 in this way :

要在 Mac OS X 中轻松快速地打开 Java Preferences 窗格，您只需使用 ⌘+SPACE 并输入 System Preferences 它将显示在窗口的最后一行.

To easily and quickly open the Java Preferences pane in Mac OS X you can simply call spotlight with ⌘+SPACE and type System Preferences it will show up in the last row of the window.