general updates

Former-commit-id: edac8a6df87e1793f94ebdad615ed424acb27d90

src/main/java/org/codesecure/dependencycheck/App.java

@@ -22,6 +22,7 @@ import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
+import java.net.URLDecoder;
 import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.LogManager;
@@ -69,11 +70,32 @@ public class App {
         app.run(args);
     }
 
+    private static File getLoggingDirectory() throws IOException {
+        String fileName = "logs";
+        String filePath = App.class.getProtectionDomain().getCodeSource().getLocation().getPath();
+        String decodedPath = URLDecoder.decode(filePath, "UTF-8");
+        File exePath = new File(decodedPath);
+        if (!exePath.isDirectory()) {
+            exePath = exePath.getParentFile();
+        }
+        File path = new File(exePath.getCanonicalFile() + File.separator + fileName);
+        path = new File(path.getCanonicalPath());
+        return path;
+    }
+
     private static void prepareLogger() {
         //while java doc for JUL says to use preferences api - it throws an exception...
         //Preferences.systemRoot().put("java.util.logging.config.file", "log.properties");
         //System.getProperties().put("java.util.logging.config.file", "configuration/log.properties");
-        File dir = new File("logs");
+        File dir;
+        try {
+            dir = getLoggingDirectory();
+        } catch (IOException ex) {
+            Logger.getLogger(App.class.getName()).log(Level.SEVERE, "Unable to get default logging location, "
+                    + "using the working directory instead.", ex);
+            dir = new File("logs");
+        }
+
         if (!dir.exists()) {
             dir.mkdir();
         }