Compile Error. ---------- 1. ERROR in /home/stefan/.javax/1513721733130/main.java (at line 156) return ai_evalFunctionOnS("swic(s, \"bla\")", "bla"); ^^^^^^^^^^^^^^^^^^ The method ai_evalFunctionOnS(String, String) is undefined for the type main ---------- 2. ERROR in /home/stefan/.javax/1513721733130/main.java (at line 158) static ai_evalFunctionOnS(String function, String s) { ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Return type for the method is missing ---------- 3. ERROR in /home/stefan/.javax/1513721733130/main.java (at line 158) static ai_evalFunctionOnS(String function, String s) { ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Return type for the method is missing ---------- 4. ERROR in /home/stefan/.javax/1513721733130/main.java (at line 158) static ai_evalFunctionOnS(String function, String s) { ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Return type for the method is missing ---------- 4 problems (4 errors) java.lang.RuntimeException: java.lang.reflect.InvocationTargetException