Install Eclipse JDT on top of CDT

All versions of Eclipse have a standard base, then a specific set of plugins, depending on the version. All you have to do is go to the Help > Install New Software menu, select the Eclipse update site (e.g. "Galileo - http://download.eclipse.org/releases/galileo"), and under the Programming Languages section, select Eclipse Java Development Tools.

If you don't see the Java Development Tools in the list, click on the "already installed" link on the install page--you may already have the Java tools installed.