都可以。 Flash Builder 4.6是基于Eclipse Indigo 32位构建的，并且有一个实用程序可将FB插件安装到现有的Eclipse 32位安装中（在Flash Builder的utities目录中，Adobe Flash Builder 4.6 Plug-in Utility.exe） 。因此，可以将Java插件添加到FB，或者运行util来插入Eclipse。我自己运行了实用程序，以插入现有的Eclipse J2EE安装中。

Either works. Flash Builder 4.6 is built on Eclipse Indigo 32-bit, and there's a utility to install the FB plug-in to an existing Eclipse 32-bit installation (in the Flash Builder's utities directory, Adobe Flash Builder 4.6 Plug-in Utility.exe). So, either add the Java plugins to FB, or run the util to plug into Eclipse. Myself, I ran the utility to plug into an existing Eclipse J2EE installation.