From 74091c1274fe51e27ab083e0b83d5712391ca36e Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Tue, 23 Dec 2025 16:30:44 +0800
Subject: [PATCH] =?UTF-8?q?java=E7=9A=84=E7=AE=97=E6=9C=AF=E8=BF=90?=
 =?UTF-8?q?=E7=AE=97=E7=AC=A6?=
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---
 day02/src/com/inmind/Demo05.java | 33 ++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 day02/src/com/inmind/Demo05.java

diff --git a/day02/src/com/inmind/Demo05.java b/day02/src/com/inmind/Demo05.java
new file mode 100644
index 0000000..707fba4
--- /dev/null
+++ b/day02/src/com/inmind/Demo05.java
@@ -0,0 +1,33 @@
+package com.inmind;
+/*
+算数运算符包括：
++	加法运算，字符串连接运算
+-	减法运算
+*	乘法运算
+/	除法运算
+%	取模运算，两个数字相除取余数
+++ 、 --	自增自减运算
+
+总结：
+1.算术运算时运算符前后的数据类型如果是一致，那么结果也就是该数据类型
+2.算术运算时运算符前后的数据类型如果是不一致，那么结果也就是该数据类型中大范围的数据类型
+
+
+有特例：byte，short，char，这3个类型在运算时，最终的结果都是int
+ */
+public class Demo05 {
+    public static void main(String[] args) {
+        System.out.println(1+3);//4
+        System.out.println(1-3);//-2
+        System.out.println(1*3);//3
+        System.out.println(10/3);//3 int
+        System.out.println(10%3);//1
+        System.out.println("-----------------------");
+        System.out.println(3124/1000*1000);//3000   0
+        System.out.println(3124/1000.0*1000);//3124 3124 3124.0
+        System.out.println("------------------------");
+        /*byte b = 10;
+        byte b1 = 20;
+        byte sum  = b+b1;*/
+    }
+}