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.

On Tuesday Oracle announced the release of a new version of its NetBeans IDE that takes advantage of the latest enhancements in the newest release of the Java Platform, Standard Edition (Java SE 8).

Java developers in need of a cloud-based IDE have dozens of options available, each with characteristics to meet specific demands. That plethora makes choosing the right one a difficult process, so ...