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Java 在静态方法中创建Local类

欢马劈雪

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在静态方法中创建Local类

实例源码：

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/*
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");

}

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions

* are met:

*   - Redistributions of source code must retain the above copyright

*     notice, this list of conditions and the following disclaimer.

*   - Redistributions in binary form must reproduce the above copyright

*     notice, this list of conditions and the following disclaimer in the

*     documentation and/or other materials provided with the distribution.

*   - Neither the name of Oracle or the names of its

*     contributors may be used to endorse or promote products derived

*     from this software without specific prior written permission.

* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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编辑于 2020-03-26 09:23:272020-03-26 09:23:27

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