public static Class boxType(Class primitiveType){
  Class c=(Class)wrapperMap.get(primitiveType);
  if (c != null)   return c;
  throw new InterpreterError("Not a primitive type: " + primitiveType);
}

public static Class boxType ( Class primitiveType ) { Class c = ( Class ) wrapperMap . get ( primitiveType ) ; if ( c != null ) return c ; throw new InterpreterError ( "Not a primitive type: " + primitiveType ) ; }
get the corresponding java . lang wrapper class for the primitive type class . e . g . integer . type - > integer . class
