From d8c95e9628d03e5a89d2753b4b8c203e8227d235 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Fri, 18 Sep 2026 10:16:19 +0800
Subject: [PATCH] =?UTF-8?q?day05--=E6=95=B0=E7=BB=84=E7=9A=84=E6=93=8D?=
 =?UTF-8?q?=E4=BD=9C=E4=BB=8B=E7=BB=8D(=E5=8F=96=E5=80=BC=E5=92=8C?=
 =?UTF-8?q?=E8=B5=8B=E5=80=BC)?=
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---
 day05/src/com/inmind/array01/Demo01.java | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/day05/src/com/inmind/array01/Demo01.java b/day05/src/com/inmind/array01/Demo01.java
index cb226a5..b0a7a72 100644
--- a/day05/src/com/inmind/array01/Demo01.java
+++ b/day05/src/com/inmind/array01/Demo01.java
@@ -37,5 +37,18 @@ public class Demo01 {
 
         String[] arr4 = {"1","2","3"};
 
+        //获取arr1的长度
+        System.out.println(arr1.length);//3
+        //获取arr1第一个空间的值(取值)
+        /*int value = arr1[0];
+        System.out.println(value);*/
+        System.out.println(arr1[0]);
+        //将100设置到arr1的第一个空间（赋值）
+        arr1[0] = 100;
+        //获取arr1第一个空间的值（取值）
+        System.out.println(arr1[0]);
+
+
+
     }
 }