To use the icons in your code:
1. Include a dependency on this plugin in your plugin properties file.
2. In your code, add
import eclipseicons.EclipseIconsPlugin;
then get an icon like this:
ImageIcon icon = EclipseIconsPlugin.getIcon(filename);
where "filename" is the name of the file as shown on the icons page,
e.g.
ImageIcon icon = EclipseIconsPlugion.getIcon("methpub_obj.gif");
This plugin provides caching, so there is no need to cache icons elsewhere.