Configure GWT in Eclipse

Installed Google App Engine 1.2.5 and Web Toolkit 1.7.1. However I still get a red underline whenever I import gwt and u开发者_JAVA百科ser any of it's classes like graphCanvas. How do I take this underline away? What haven't I configured correctly?

Better way to use GWT on eclipse is to use the plugin provide by google

Red lines are due to GWT libraries missing from project classpath, either add it manually or use the above plugin

Hmmm, I might be missing something, but I can't find any class named graphCanvas or GraphCanvas inside the gwt 1.7.1 API? Are you sure graphCanvas is correct? Perhaps graphCanvas is included in a thirdparty jar outside gwt and you need to add that to your ecipse project's classpath?