All the modern Java IDEs support Apache Ant almost out of the box.
AntRunner For JBuilder (unbundled)
AntWork Plugin for the Jext Java Text Editor (unbundled)
JDEE (Java Development Environment for Emacs)
has built-in text ANT integration: selection of target through text
field, execution, hyperlink to compilation errors. Installation: built-in
JDEE 2.2.8 or later. Configuration: through customize menu
"Jde Build Function"
has built-in GUI ANT integration: GUI selection of targets, execution,
hyperlink to compilation errors
NetBeans IDE uses Ant as the basis for its project system starting with the 4.0 release.
jEdit is an open source java IDE with some great plugins for Java dev, a
good XML editor and the Antfarm plugin to execute targets in a build
Eclipse is IBM's counterpoint to NetBeans; an open source IDE with
Java and Ant support.
Virtual Ant GUI allows you to work on a Virtual File System without dealing with the XML. Plugs into Eclipse, Netbeans & Intellij.
WebSphere Studio Application Developer
JBuilder 9 Personal
JBuilder supports Ant with the following features. Add Ant nodes to
projects and execute Ant targets from within JBuilder. Add custom Ant-based
build tasks with custom Ant libraries to run Ant from within JBuilder.
Rapid navigation from Ant build error messages to source files.
Customize build menu and toolbar with custom build targets.