From 494b79dbf511c4723a8fe05ac58df627e023aad0 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Wed, 14 Oct 2026 15:11:22 +0800
Subject: [PATCH] =?UTF-8?q?s-day03--=E5=8F=AF=E5=8F=98=E5=8F=82=E6=95=B0?=
 =?UTF-8?q?=E7=9A=84=E4=BD=BF=E7=94=A8?=
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---
 .../src/com/inmind/var_param03/Demo10.java    | 39 +++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 s-day03/src/com/inmind/var_param03/Demo10.java

diff --git a/s-day03/src/com/inmind/var_param03/Demo10.java b/s-day03/src/com/inmind/var_param03/Demo10.java
new file mode 100644
index 0000000..10373f1
--- /dev/null
+++ b/s-day03/src/com/inmind/var_param03/Demo10.java
@@ -0,0 +1,39 @@
+package com.inmind.var_param03;
+/*
+    在jdk5中，提供可变参数，当我们要定义多个同一种类型的参数，并且，个数还不确定时，此时可以用可变参数来替代
+
+    可变参数的语法：
+    (数据类型... 参数名)
+
+    可变参数也是一个语法糖，本质不变，就是数组
+
+    注意事项：
+        1.可变参数在一个参数列表中只能出现一次
+        2.如果有多个参数，可变参数必须在最后一个
+ */
+public class Demo10 {
+    public static void main(String[] args) {
+        //计算2个整数
+        System.out.println(getSum(1,2));
+        //计算3个整数
+        System.out.println(getSum(1,2,3));
+        //计算4个整数
+        System.out.println(getSum(1,2,3,4));
+    }
+
+    public static int getSum(int... arr){
+        int sum = 0;
+        for (int i : arr) {
+            sum += i;
+        }
+        return sum;
+    }
+
+    /*public static int getSum(int a,int b,int c){
+        return a+b+c;
+    }
+
+    public static int getSum(int a,int b,int c,int d){
+        return a+b+c+d;
+    }*/
+}