public void findMatches( IJavaProject javaProject) throws JavaModelException {
	this.searchEngine = new SearchEngine();
	List requiredProjects = new ArrayList();
	List requiredPath = new ArrayList();
	IPackageFragmentRoot[] roots = javaProject.getPackageFragmentRoots();
	for (int i=0; i<roots.length; i++) {
		StringBuffer buffer = new StringBuffer("Package fragment root: ");
		String rootName = roots[i].getElementName();
		if (rootName.length() == 0) rootName = "<default>";
		buffer.append(rootName).append(" (").append(roots[i].getPath()).append(")\n");
		IJavaElement[] children = roots[i].getChildren();
		boolean display = false;
		for (int j=0; j<children.length; j++) {
			if (children[j].getElementType() == IJavaElement.PACKAGE_FRAGMENT) {
				IPackageFragment fragment = (IPackageFragment) children[j];
				String fragmentName = fragment.getElementName();
				if (fragmentName.length() == 0) fragmentName = "<default>";
				buffer.append("    - package fragment: ").append(fragmentName).append("\n");
				ICompilationUnit[] units = fragment.getCompilationUnits();
				for (int k=0; k<units.length; k++) {
					display = true;
					SearchMatchCollector collector = new SearchMatchCollector(javaProject.getProject());
					buffer.append("        + compilation unit: ").append(units[k].getElementName()).append("\n");
					this.searchEngine.searchDeclarationsOfReferencedTypes(units[k], collector, null);

					SearchMatch[] matches = collector.getMatches();
					int length = matches.length;
					if (length == 0) {
						buffer.append("            - > No declaration or no referenced types found!").append("\n");
					} else {
						buffer.append("            -> "+length+" referenced types were found:").append("\n");
						for (int m = 0; m < length; m++) {
	
							buffer.append("                "+(m+1)+") "+((IJavaElement)matches[m].getElement()).getElementName()).append("\n");
							IProject p = matches[m].getResource().getProject();
							if (!p.equals(javaProject)) {
								if (requiredProjects.indexOf(p) == -1) {
									buffer.append("                    => project "+p.getName()+" is required").append("\n");
									requiredProjects.add(p);
								}
							}
	
							IPath path = matches[m].getResource().getFullPath();
							if (requiredPath.indexOf(path) == -1) {
								buffer.append("                    => path "+path+" is required").append("\n");
								requiredPath.add(path);
							}
						}
					}
				}
			}
		}
		if (display) {
			System.out.println(buffer.toString());
		}
	}
}