• 1. Type-Wrapper class: 类型包装器类

• 1.If you need another data type such as integer, floating point, or Boolean value, you will have to parse the string using the appropriate wrapper class.
  如果需要其他的数据类型，比如说整数、浮点数或者布尔值，必须使用相应的包装器类来解析字符串。
  dict.yoduao.com
• 2.To pass this to a recursive method, the anonymous class should extend a wrapper type known to the method.
  为了在递归方法中传递，匿名类应该扩展方法已知的包装器类型。
  dict.yoduao.com
• 3.Primitive float type and wrapper class float have different comparison behavior.
  基本浮点类型和包装类浮点有不同的比较行为。
  dict.yoduao.com

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