Select Windows > Preferences and select Java > Build Path > User Libraries in the preference tree. Click New and type "GXT" into the User library name field. Make sure your new library is selected and click Add JARs. Navigate to the root folder of the Ext GWT download and add the "gxt.jar" file. Click OK.
Click the New Web Application Project button in Google toolbar to create a new GWT project. Alternatively, if you don't see the button in the toolbar, you can click File > New > Other and select Web Application Project under the Google folder and click Next.
In the Project name field, write "HelloGXT". In the Package field, write "com.hello.gxt". Make sure under Google SDKs the "Use Google Web Toolkit" box is checked. Click Finish.
In the Project Explorer, you will see a new folder with your project's name. Right click that folder and click Build Path > Configure Build Path. This takes you to the Properties of your project under the Java Build Path settings. Click Add Library and then select User Library and click Next. Make sure the check box for your Ext GWT library is checked and click Finish. Your Ext GWT library should now appear in your build path.
Copy the resources folder from the Ext GWT download into your war folder.
Open HelloGXT.html in Eclipse and delete the table and h1 data in the body tag. Add the following lines to the head tag.