From a43af9bd28b2c0b5c4cb6d441b52b5b64b10d004 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Wed, 4 Feb 2026 10:16:25 +0800
Subject: [PATCH] =?UTF-8?q?=E8=BF=9B=E9=98=B6day04-throw=E5=85=B3=E9=94=AE?=
 =?UTF-8?q?=E5=AD=97=E7=9A=84=E4=BD=9C=E7=94=A8?=
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---
 .../src/com/inmind/throw02/ThrowDemo03.java   | 34 +++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 javaSE-day05/src/com/inmind/throw02/ThrowDemo03.java

diff --git a/javaSE-day05/src/com/inmind/throw02/ThrowDemo03.java b/javaSE-day05/src/com/inmind/throw02/ThrowDemo03.java
new file mode 100644
index 0000000..9833b77
--- /dev/null
+++ b/javaSE-day05/src/com/inmind/throw02/ThrowDemo03.java
@@ -0,0 +1,34 @@
+package com.inmind.throw02;
+/*
+Java异常处理的五个关键字：try、catch、finally、throw、throws
+	throw关键字的作用：
+	之前的代码中如果出现异常都是JVM创建并抛出，那么能不能自己抛出呢？？？
+
+	可以，throw能够由java开发人员自己抛出一个异常
+    语法:throw new 异常名();
+
+    为什么要自己抛出异常而不使用JVM的异常操作 呢??
+    我们要针对指定的异常,做出对应处理方案
+ */
+public class ThrowDemo03 {
+    public static void main(String[] args) {
+        //定义整数数组
+        int[] arr = {1, 2, 3, 4, 5};
+        //定义出一个根据索引获取指定数组空间的值
+        int result = getByIndex(arr,7);
+        System.out.println(result);
+        System.out.println("程序结束");
+    }
+
+    private static int getByIndex(int[] arr, int index) {
+        //当传入的索引值不合法时，我们自己主动抛出一个异常，交给调用者处理
+        if (index < 0 || index > arr.length - 1) {
+            String msg = "您输入的索引不合法，当前数组的索引范围只能是0~"+(arr.length-1)+"，但是您输入的索引为"+index;
+            throw new ArrayIndexOutOfBoundsException(msg);
+        }
+
+        int result = arr[index];
+        System.out.println("getByIndex方法正常执行");
+        return result;
+    }
+}