Fixed RunParser according to new constructor.

src/de/dhbwstuttgart/parser/RunParser.java

@@ -25,7 +25,7 @@ public class RunParser{
       CommonTokenStream tokens = new CommonTokenStream(lexer);
       Java8Parser parser = new Java8Parser(tokens);
       Java8Parser.CompilationUnitContext tree = parser.compilationUnit();
-      SyntaxTreeGenerator generator = new SyntaxTreeGenerator();
+      SyntaxTreeGenerator generator = new SyntaxTreeGenerator(new JavaClassRegistry());
       SourceFile f = generator.convert((Java8Parser.CompilationUnitContext) tree);
       String pkgName = f.getPkgName();
       System.out.println(pkgName);

src/de/dhbwstuttgart/parser/SyntaxTreeGenerator.java

@@ -55,7 +55,7 @@ public class SyntaxTreeGenerator{
     }
   }
   
-  public JavaClassRegistry getReg{
+  public JavaClassRegistry getReg(){
     return this.reg;
   }