There are a bundle of IDEs. take netbeans for example. it not just shows the properties and methods availbale, it also shows the associated javadoc. it also provides a bundle of feature. you can download newtbeans from www.netbeans.org.

You can also use sun studio creator and sun studio enterprise. but for that you need to register to sun SDN (hey that is free)

with so many beautiful IDEs available for free, i hardly find out why somebody would be interested in JCreator which costs you a lot of money and is not that good.