From 245e6900d83f6580c8f7ae46fad8d39dd00cc194 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Fri, 18 Sep 2026 11:08:14 +0800
Subject: [PATCH] =?UTF-8?q?day05--=E6=95=B0=E7=BB=84=E7=9A=84=E5=BC=82?=
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---
 day05/src/com/inmind/array01/Demo02.java | 21 +++++++++++++++++++++
 day05/src/com/inmind/array01/Demo03.java | 24 ++++++++++++++++++++++++
 2 files changed, 45 insertions(+)
 create mode 100644 day05/src/com/inmind/array01/Demo02.java
 create mode 100644 day05/src/com/inmind/array01/Demo03.java

diff --git a/day05/src/com/inmind/array01/Demo02.java b/day05/src/com/inmind/array01/Demo02.java
new file mode 100644
index 0000000..e849afa
--- /dev/null
+++ b/day05/src/com/inmind/array01/Demo02.java
@@ -0,0 +1,21 @@
+package com.inmind.array01;
+
+public class Demo02 {
+    public static void main(String[] args) {
+        //定义一个整数变量
+        int i = 10;
+        System.out.println(i);
+        //简写形式定义一个整数数组
+        int[] arr = {1, 2, 3};
+        int[] arr1 = {4, 5, 6};
+        System.out.println(arr[1]);
+        System.out.println(arr1[2]);
+
+        System.out.println(arr);
+        System.out.println(arr1);
+
+        arr = arr1;
+        System.out.println(arr);
+        System.out.println(arr1);
+    }
+}
diff --git a/day05/src/com/inmind/array01/Demo03.java b/day05/src/com/inmind/array01/Demo03.java
new file mode 100644
index 0000000..073e52d
--- /dev/null
+++ b/day05/src/com/inmind/array01/Demo03.java
@@ -0,0 +1,24 @@
+package com.inmind.array01;
+
+/**
+ * ArrayIndexOutOfBoundsException
+ * 数组索引越界异常
+ * 注意：数组的长度固定不变的，数组的最大的索引值为arr.length-1
+ * 0~(arr.length-1)
+ */
+public class Demo03 {
+    public static void main(String[] args) {
+        int[] arr = {1, 2, 3};
+        System.out.println(arr[0]);
+        System.out.println(arr[1]);
+        System.out.println(arr[2]);
+        //如果使用错误的索引访问数组的数据，那就会报越界异常java.lang.ArrayIndexOutOfBoundsException
+        //System.out.println(arr[3]);
+        int index = 2;
+        if (index > 0 && index < arr.length) {
+            System.out.println(arr[index]);
+        }
+
+        System.out.println("程序正常结束");
+    }
+}