为功能接口创建内部类的实例

import java.util.function.Consumer;


public class Main {

  public static void main(String[] args) {/**来自 时代Java**/

    VariableAccessInner vai = new VariableAccessInner();

    VariableAccessInner.InnerClass inner = vai.new InnerClass();

    inner.lambdaInMethod("Hello");

  }

}


class VariableAccessInner {

  String CLASSA = "Class-level A";

  class InnerClass {

    String CLASSA = "Class-level B";

    void lambdaInMethod(String passedIn) {

      String METHODA = "Method-level A";

      // passedIn = "test";

      Consumer<String> l1 = x -> {

        System.out.println(x);

        System.out.println("CLASSA Value: " + CLASSA);