where

This will look for OpenOffice in it's default locations and print where it has been found.

	import ag.ion.bion.officelayer.application.IApplicationAssistant;
	import ag.ion.bion.officelayer.application.ILazyApplicationInfo;

//...

	IApplicationAssistant applicationAssistant = new ApplicationAssistant();
	ILazyApplicationInfo appInfo = applicationAssistant.getLatestLocalApplication();
	if (appInfo!=null) { // A Openoffice.org was found
		System.out.println(appInfo.getHome());
	}

Please note in noa-libre getLatestLocalApplication has to be replaced by getLatestLocalLibreOfficeApplication respectively getLatestLocalOpenOfficeOrgApplication.

This is some source code which should obtain the libreoffice/openoffice installation with the highest version number:

public static ILazyApplicationInfo getOfficeInfo() {
		IApplicationAssistant applicationAssistant;
		ILazyApplicationInfo appInfo=null, LappInfo=null, OappInfo=null; 
		try {
			applicationAssistant = new ApplicationAssistant();
			LappInfo = applicationAssistant.getLatestLocalLibreOfficeApplication();
			OappInfo = applicationAssistant.getLatestLocalOpenOfficeOrgApplication();
			appInfo=LappInfo;// take the latest libreoffice installation unless openoffice is also installed in a higher version
			if (appInfo==null) {
				appInfo=OappInfo;
			}
			if ((LappInfo!=null)&&(OappInfo!=null)) {
				if (LappInfo.getMajorVersion()>OappInfo.getMajorVersion()) {
					appInfo=LappInfo;	
				}
				if (LappInfo.getMajorVersion()==OappInfo.getMajorVersion()) {
					if (LappInfo.getMinorVersion()>OappInfo.getMinorVersion()) {
						appInfo=LappInfo;	
					}
				}
			}
		} catch (OfficeApplicationException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return appInfo;
	}