some improvements

main.tex

@@ -14,6 +14,7 @@
     basicstyle=\ttfamily\scriptsize,
     keywordstyle=\color{blue},
     commentstyle=\color{green!60!black},
+    escapeinside={(*@}{@*)},
     numbers=left,
     numberstyle=\tiny\color{gray},
     frame=single,
@@ -54,15 +55,27 @@
     \end{enumerate}
 \end{frame}
 
-\begin{frame}
+\begin{frame}[fragile]
     \frametitle{Motivation I}
 
     \begin{itemize}
         \item Welche Features fehlen noch in Java-TX?
         \item Welche Bugs gibt es?
-        \item Wie performant is Java-TX für größere Projekte?
         \item Vorteile/Nachteile zu Java in der Praxis
+        \item Wie performant is Java-TX für größere Projekte?
     \end{itemize}
+    \begin{visibleenv}<2>
+        \begin{table}
+            \begin{tabular}{ l | c | c }
+                Language & files & code \\
+                \hline \hline
+                Java & 247 & 17958 \\
+                ANTLR Grammar & 2 & 771 \\
+                \hline
+                SUM & 249 & 18729 \\
+            \end{tabular*}
+        \end{table}
+    \end{visibleenv}
 
 \end{frame}
 
@@ -70,10 +83,10 @@
     \frametitle{Motivation II}
     \begin{center}
         \begin{tikzpicture}[scale=3]
-            \draw (1,0) -- (0,0) -- (0,1) -- (3,1) -- (3,0) -- (2,0) -- (2, -1.1) -- (1, -1.1) -- cycle;
-            \node at (0.5, 0.5) {JTX};
-            \node at (1.5, -0.55) {JTX};
-            \node at (2.5, 0.5) {BC};
+            \draw<2> (1,0) -- (0,0) -- (0,1) -- (3,1) -- (3,0) -- (2,0) -- (2, -1.1) -- (1, -1.1) -- cycle;
+            \node<2> at (0.5, 0.5) {JTX};
+            \node<2> at (1.5, -0.55) {JTX};
+            \node<2> at (2.5, 0.5) {BC};
             \draw (3.1,-1.1) -- (2.1,-1.1) -- (2.1,-0.1) -- (5.1,-0.1) -- (5.1,-1.1) -- (4.1,-1.1) -- (4.1, -2.2) -- (3.1, -2.2) -- cycle;
             \node at (2.6, -0.6) {JTX};
             \node at (3.6, -1.6) {JAVA};
@@ -119,7 +132,7 @@ public class FunNClass extends ClassOrInterface {
         \end{onlyenv}
         \begin{onlyenv}<2->
         \begin{column}{0.5\textwidth}
-            \begin{lstlisting}[language=java, escapechar=!]
+            \begin{lstlisting}[language=java]
 public class FunNClass extends ClassOrInterface {
   private static GenericDeclarationList createGenerics(Iterable<? extends GenericRefType> var0) {
     List var1 = null;