构造器

• When applied to a field , it means that the field s value must be assigned
  应用于字段时，意味着该字段的值在每个构造器内必须
• Because of inheritance , this constructor may be called by a class that inherits from
  因为继承的缘故，这个构造器可能被一个从
• Field must be initialized exactly once in every constructor , if the construction of a
  字段在每个构造器中必须只初始化一次，如果
• Constructor runs , the length and offset are then set to their desired values
  构造器运行时，字符串长度和偏移量被设置成所需要的值。
• Any method that allocates and initializes a new object acts as a constructor
  一些方法在扮演构造器的角色来分配及初始化一个新的对象
• S constructor is
  的构造器是
• Contains category names and a data series . the code to create an instance of the
  构造器的输入参数包括category的名称和一个数据series 。
• Add code to the constructor to publish the data to the subscription manager
  将此代码添加到构造器中，将数据发布到subscription manager ：
• Providing only the few additional constructors needed to create a formatted message
  ，然后只需提供极少几个必须的构造器来创建格式化的消息。
• The only way to set such a field is through the exception constructor
  设置这样一个字段的惟一方法就是通过异常构造器（ exception constructor ） 。