Can I access new methods in anonymous inner class with some syntax?

Question

Is there any Java syntax to access new methods defined within anonymous inner classes from outer class? I know there can be various workarounds, but I wonder if a special sy

Answer 1

Funny enough, this is now allowed with var construct (Java 10 or newer). Example:

var calculator = new Object() {
  BigDecimal intermediateSum = BigDecimal.ZERO;
  void calculate(Item item) {
    intermediateSum = Numbers.add(intermediateSum, item.value);
    item.sum= intermediateSum;
  }
};
items.forEach(calculator::calculate);

Here with method reference, but works with dot method call as well, of course. It works with fields as well. Enjoy new Java. :-)

I found more tricks with var and anonymous classes here: https://blog.codefx.org/java/tricks-var-anonymous-classes/