Java中是否提供C＃样式对象初始化程序

Question

像这个？http://weblogs.asp.net/dwahlin/archive/2007/09/09/c-3-0-features-object-
initializers.aspx

Person p = new Person()
{
    FirstName = "John",
    LastName = "Doe",
    Address = new Address()
    {
        Street = "1234 St.",
        City = "Phoenix"
    }
};

Answer 1

其实有！

Person p = new Person()
{{
    setFirstName("John");
    setLastName("Doe");
    setAddress(new Address()
    {{
        setStreet("1234 St.");
        setCity("Phoenix");
    }});
}};

甚至：

Person p = new Person()
{{
    firstName = "John";
    lastName = "Doe";
    address = new Address()
    {{
        street = "1234 St.";
        city = "Phoenix";
    }});
}};

这称为 双括号初始化 。但是，我会避免使用这种惯用法，因为它有一些意外的副作用，例如，此语法实际上创建了一个匿名内部类Person$1and
Address$。