目录双冒号运算符(::)的语法静态方法引用实例方法引用构造函数引用总结在Java 8引入的Lambda表达式和函数式接口之后，双冒号运算符(::)成为了一项重要的功能。它可以将方法或构造函数作为参数传递，简化了编码和提升
I am reading the tutorials on w3cschools ( http://www.w3schools.com/schema/schema_complex.asp ) but they don\'t seem to mention how you could add restrictions on complex types.
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