Introduction - If you have any usage issues, please Google them yourself
* Overload: name, different detailed function* 1 operator overloading (only one+)* 2. Method overloading: method name, as different parameters* (1) functional layers: soy sauce, taxi, playing cards* println (" zhong " ) * println (" zhong guo " ) * 3. overloaded constructor: constructor same name, different parameters