Java Variable length parameters

Variable length form parameters in Java

Format

public static void add(int ... A)

{

}

Use this example to introduce

Characteristics:

(1) Can receive an argument of any number of the corresponding type , and an argument can be an array

(2) When there are other parameters in the code, the variable-length parameter is placed at the end of the formal parameter list

public static void Add (double num,int ... b

(3) The process of realizing the deformable parameter is also implemented by an array:

A is equivalent to an array name, such as writing a summation method

/* variable-length parameters */import Java.util.Scanner;   public class canchange{public static void Main (String[]args) {//int of arbitrary length []num={34,45,65,7,83,34,34,45,65,}; add (num); }//b is a variable-length parameter public static void Add (int ...  b) {int sum=0; for (int i=0;i<b.length;i++) {sum+=b[i];} System.out.println ("sum=" +sum); } }

This article is from the "11890208" blog, please be sure to keep this source http://11900208.blog.51cto.com/11890208/1865373

Java Variable length parameters