A good analogy for a constructor method is a building contractor, who takes the blueprints for your house and builds it.

构造函数方法好比建筑承包人，它利用房子的设计图建房子。

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Another way of building an array in a single operation is by using a constructor by query, which creates an array with the values returned by a single-column sub-select, as shown in the listing below.

在单一操作中构建阵列的另一种方式是使用通过查询的构造函数，其创建具有由单列子选择返回的值的阵列，如以下清单所示。

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Maybe you're building a framework and need to make sure that all of the classes in a package have a zero-arg constructor or that all fields prefixed with an underscore have a getter but not a setter.

也许您正在构建一个框架，并且需要保证包中的所有类都有零参数的构造函数、或者所有带下划线前缀的字段都有getter而没有setter。

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Maybe you're building a framework and need to make sure that all of the classes in a package have a zero-arg constructor or that all fields prefixed with an underscore have a getter but not a setter.

也许您正在构建一个框架，并且需要保证包中的所有类都有零参数的构造函数、或者所有带下划线前缀的字段都有getter而没有setter。

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