Project mangers at Eclipse went live with the Web Tools Platform Project last week. It's an open-source project that defines a platform API for third-party, commercial adoption and extension, and ...

Bolstering development of Web and enterprise Java 2 Enterprise Edition (J2EE) applications in the open-source arena, the Eclipse Foundation on Monday is set to release Version 1.0 of its Eclipse Web ...

Eclipse is generally recommended. (Personally I think it blows but many here like it) I think there is also netBeans. Those are the two free java IDEs I know. A quick google search will bring them up.