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++) {
		System.out.println("Package fragment root: "+roots[i].getElementName());
		IJavaElement[] children = roots[i].getChildren();
		for (int j=0; j<children.length; j++) {
			if (children[j].getElementType() == IJavaElement.PACKAGE_FRAGMENT) {
				IPackageFragment fragment = (IPackageFragment) children[j];
				System.out.println("	- package fragment: "+fragment.getElementName());
				ICompilationUnit[] units = fragment.getCompilationUnits();
				for (int k=0; k<units.length; k++) {
					SearchMatchCollector collector = new SearchMatchCollector(javaProject.getProject());
					System.out.println("		+ compilation unit: "+ units[k].getElementName());
					this.searchEngine.searchDeclarationsOfReferencedTypes(units[k], collector, null);

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