Introduction to variable parameters ：

summary ： It is JDK1.5 Characteristics of , Indicates that the number of parameters is variable , That is, at least incoming 0 Data of this type , At most, countless data of this type will be passed in .

Format ： data type … Variable name

details ：（ matters needing attention ）

1. The bottom layer of variable parameters is actually an array .
2. The formal parameter list of a method has and can only have one variable parameter , And variable parameters should be placed at the end of the parameter list