在静态方法中创建Local类

/*
来 自*
 N o w J a v a . c o m
*/

public class LocalClassExample {


    static String regularExpression = "[^0-9]";


    public static void validatePhoneNumber(String phoneNumber1,

            String phoneNumber2) {


        final int numberLength = 10;


        // Valid in JDK 8 and later:


        // int numberLength = 10;

        /* 
         来自 
        *时   代     Java  公  众  号 - nowjava.com*/

        class PhoneNumber {


            String formattedPhoneNumber = null;


            PhoneNumber(String phoneNumber) {

                // numberLength = 7;

                String currentNumber = phoneNumber.replaceAll(

                        regularExpression, "");

                if (currentNumber.length() == numberLength)

                    formattedPhoneNumber = currentNumber;

                else

                    formattedPhoneNumber = null;

            }


            public String getNumber() {

                return formattedPhoneNumber;

            }


            // Valid in JDK 8 and later:


            //            public void printOriginalNumbers() {

            //                System.out.println("Original numbers are " + phoneNumber1 +

            //                    " and " + phoneNumber2);

            //            }

        }


        PhoneNumber myNumber1 = new PhoneNumber(phoneNumber1);

        PhoneNumber myNumber2 = new PhoneNumber(phoneNumber2);


        // Valid in JDK 8 and later:


        //        myNumber1.printOriginalNumbers();


        if (myNumber1.getNumber() == null)

            System.out.println("First number is invalid");

        else

            System.out.println("First number is " + myNumber1.getNumber());

        if (myNumber2.getNumber() == null)

            System.out.println("Second number is invalid");

        else

            System.out.println("Second number is " + myNumber2.getNumber());


    }


    public static void main(String... args) {

        validatePhoneNumber("123-456-7890", "456-7890");

    }

}