From b33226a035c439e2d533069c4381c0f5a1738b2c Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Wed, 22 Jul 2026 10:48:07 +0800
Subject: [PATCH] =?UTF-8?q?day08-=E5=B8=B8=E7=94=A8=E7=B1=BB-String-?=
 =?UTF-8?q?=E7=9A=84=E6=AF=94=E8=BE=83=E7=9A=84=E6=96=B9=E6=B3=95=5Fequals?=
 =?UTF-8?q?=5FequalsIgnoreCase?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 day08/src/com/inmind/string01/Demo03.java | 24 +++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 day08/src/com/inmind/string01/Demo03.java

diff --git a/day08/src/com/inmind/string01/Demo03.java b/day08/src/com/inmind/string01/Demo03.java
new file mode 100644
index 0000000..90aca6c
--- /dev/null
+++ b/day08/src/com/inmind/string01/Demo03.java
@@ -0,0 +1,24 @@
+package com.inmind.string01;
+/*
+常用类-String-的比较的方法_equals_equalsIgnoreCase
+
+public boolean equals (Object anObject) ：将此字符串与指定对象的内容进行比较。
+
+public boolean equalsIgnoreCase (String anotherString) ：将此字符串与指定对象进行比较，忽略大小写。
+ */
+public class Demo03 {
+    public static void main(String[] args) {
+        String s1 = "abc";
+        String s2 = new String("abc");
+        //false,但是==比较基本类型的是否值相同的，但是比较地址其实大部分情况是没有意义的，对于人的来说，比较地址是毫无意义的
+        System.out.println(s1 == s2);//false
+        //如何比较引用数据类型的内容？？？？
+        System.out.println(s1.equals(s2));//true
+        System.out.println("abc".equals(s2));//true
+        System.out.println("-------------------------");
+        String s3 = "ABC";
+        String s4 = "ABc";
+        System.out.println(s3.equals(s4));//false
+        System.out.println(s3.equalsIgnoreCase(s4));//true,其实就是都转成大写或小写，再比较
+    }
+}