From ee49b3318ea66f5df4431ad495b10f68c12589da Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Thu, 23 Apr 2026 11:44:35 +0800
Subject: [PATCH] =?UTF-8?q?day02-=E8=BF=90=E7=AE=97=E7=AC=A6-=E9=80=BB?=
 =?UTF-8?q?=E8=BE=91=E8=BF=90=E7=AE=97=E7=AC=A6?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 day02/src/com/inmind/yunsuanfu02/Demo11.java | 41 ++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 day02/src/com/inmind/yunsuanfu02/Demo11.java

diff --git a/day02/src/com/inmind/yunsuanfu02/Demo11.java b/day02/src/com/inmind/yunsuanfu02/Demo11.java
new file mode 100644
index 0000000..2d6d916
--- /dev/null
+++ b/day02/src/com/inmind/yunsuanfu02/Demo11.java
@@ -0,0 +1,41 @@
+package com.inmind.yunsuanfu02;
+/*
+运算符_逻辑运算符
+&& : 双与  短路与   并且
+|| ：双或  短路与	或者
+!  : 非             取反
+
+注意：逻辑运算符经常与比较运算符结合使用！！！
+
+短路效果：双与与双或的短路效果(只要已经有确定的结果，就不要做多余的操作)
+ */
+public class Demo11 {
+    public static void main(String[] args) {
+        //双与：一假即假
+        System.out.println(true&&true);//true
+        System.out.println(true&&false);//false
+        System.out.println(false&&false);//false
+
+        //双或:一真即真
+        System.out.println(true||true);//true
+        System.out.println(true||false);//true
+        System.out.println(false||true);//true
+        System.out.println(false||false);//false
+        //非:取反
+        System.out.println(!false);//true
+        System.out.println(!!false);//false
+        System.out.println("--------------------------");
+        //判断一个小学生是否得了100
+        int math = 100;
+        int chinese = 99;
+        System.out.println((math == 100)||(chinese==100));//false
+
+        System.out.println("-----------以下是短路效果-----------");
+        int i = 10;
+        int j = 20;
+        //短路效果：双与与双或的短路效果(只要已经有确定的结果，就不要做多余的操作)
+        System.out.println(i<j && i++ > ++j);//false
+        System.out.println(i);//11
+        System.out.println(j);//21
+    }
+}