JDK 7 in Netbeans for OS X Lion

Question

I am in the process of learning Java and the book I am using has code that requires Java 7. I downloaded the JDK7 developer preview from Google Code so I could add it as a Platform in Netbeans, when I select the 1.7.jdk, file the Next button turns grey for some reason as you can see in the image below:

What am I doing wrong? Thanks!

Answer 1

请遵循这些说明，以了解如何为JDK7设置Netbean 7。

Answer 2

确保按SOURCES，然后单击添加平台，默认选择是CLASSES。