懒汉式单例

最新推荐文章于 2025-05-16 19:25:15 发布

骑着老虎去溜猫

最新推荐文章于 2025-05-16 19:25:15 发布

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Public class Person {
    private static volatile Person person;
    private Person (){}
    public static  Person getInstance(){
        if(person == null){
            synchronized (Person.class){
                if (person == null){
                    person = new Person();
                }
            }
        }
        return person;
    }
}