LocalInterfaceLocalEnum.java

void checkLocalInterface() {
        interface Runner {
            void run();
        }

        Runner runner = () -> System.out.println("Running");
        runner.run();
    }

void checkLocalEnum() {
        enum COLOR {RED, PURPLE, BLUE}
        System.out.println(Arrays.toString(COLOR.values()));
   }

    /*
        Local enum is implicitly static. So, we can't work with non-static variable in local enum.
    */
void checkLocalEnum2() {
        int val = 2;
        enum LEVEL {
            LOW, MID, HIGH;

            void getValue() {
                System.out.println(this);
//              System.out.println(val); // ERROR, non-static variable can't be referenced from static context.
            }
        }
        for (LEVEL level : LEVEL.values()) {
            level.getValue();
        }
    }