编译LumaQQ2004 Shutter的时候出现这个问题

懒猫

我是Java初学者，在用Eclipse 3.1M7（Win2k3）尝试运行Shutter Demo的时候出现这个问题：

Exception in thread "main" java.lang.Error: Unresolved compilation problems:
        icons cannot be resolved
        Icons cannot be resolved
        Display cannot be resolved to a type
        Display cannot be resolved to a type
        Shell cannot be resolved to a type

        at Shutter.src.edu.tsinghua.swt.demo.ShutterDemo.main(ShutterDemo.java:54)

请问这是什么问题呢？各位能解答一下小弟的问题吗，谢谢了～