From 8fcec504ba91617b27888bed7dd2a6be5e573bc1 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Thu, 25 Dec 2025 10:21:54 +0800
Subject: [PATCH] =?UTF-8?q?day03-3=E7=A7=8D=E5=BE=AA=E7=8E=AF=E7=9A=84?=
 =?UTF-8?q?=E5=8C=BA=E5=88=AB=E5=92=8C=E5=BE=AA=E7=8E=AF=E7=9A=84=E6=8E=A7?=
 =?UTF-8?q?=E5=88=B6=E5=85=B3=E9=94=AE=E5=AD=97break&continue?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 day03/src/com/inmind/Demo06.java        | 44 +++++++++++++++++++++++++
 day03/src/com/inmind/Demo07_break.java  | 25 ++++++++++++++
 day03/src/com/inmind/Demo_continue.java | 19 +++++++++++
 3 files changed, 88 insertions(+)
 create mode 100644 day03/src/com/inmind/Demo06.java
 create mode 100644 day03/src/com/inmind/Demo07_break.java
 create mode 100644 day03/src/com/inmind/Demo_continue.java

diff --git a/day03/src/com/inmind/Demo06.java b/day03/src/com/inmind/Demo06.java
new file mode 100644
index 0000000..f82264d
--- /dev/null
+++ b/day03/src/com/inmind/Demo06.java
@@ -0,0 +1,44 @@
+package com.inmind;
+/*
+三种循环的区别
+使用场景：for（数组遍历，字符串遍历，集合遍历）、while(io流)、do-while(当循环体必须执行一次的时候)
+
+区别：
+1.当循环条件都不满足时，只有do-while一定会执行一次循环体语句
+2.for循环的循环变量是定义在for语句内部的，所以超出for循环以外的话，就不能使用，就像没定义过一样
+3.while和do-while的循环变量可以一直使用
+*/
+public class Demo06 {
+    public static void main(String[] args)
+    {
+        //for
+        //打印1~10的值
+        for(int i = 1;i <= 10;i++){
+            System.out.println(i);
+        }
+
+        int i = 100;//证明for循环中的i与当前的i不在同一范围内
+        System.out.println(i);
+
+        System.out.println("-----------------------");
+        //while
+        //打印1~10的值
+        int j = 1;
+        while(j<=10){
+            System.out.println(j);
+            j++;
+        }//这里的大括号就表示结束了
+
+        System.out.println(j);
+        System.out.println("-----------------------");
+        //do-while
+        //打印1~10的值
+        int k = 1;
+        do{
+            System.out.println(k);
+            k++;
+        }while(k<=10);//错误: 需要';'，{}表示结束，而()不行，必须要加;表示结束
+
+        System.out.println(k);
+    }
+}
diff --git a/day03/src/com/inmind/Demo07_break.java b/day03/src/com/inmind/Demo07_break.java
new file mode 100644
index 0000000..1bc5730
--- /dev/null
+++ b/day03/src/com/inmind/Demo07_break.java
@@ -0,0 +1,25 @@
+package com.inmind;
+/*
+循环的控制_break
+break有2个作用：
+	1.结束switch语句
+	2.结束循环
+*/
+public class Demo07_break {
+    public static void main(String[] args) {
+        /*int i = 10;
+        if (i == 10) {
+            break; 错误：switch或循环之外无法使用break
+        }*/
+        //需求：跑10圈，但是在跑到第5圈的时候，身体不适，就停止跑步
+        for (int i = 1; i < 11; i++) {
+            if (i == 5) {
+                //跑到第5圈的时候,提前结束整个循环
+                break;
+            }
+            System.out.println(i);
+        }
+
+        System.out.println("程序结束");
+    }
+}
diff --git a/day03/src/com/inmind/Demo_continue.java b/day03/src/com/inmind/Demo_continue.java
new file mode 100644
index 0000000..30c846c
--- /dev/null
+++ b/day03/src/com/inmind/Demo_continue.java
@@ -0,0 +1,19 @@
+package com.inmind;
+/*
+循环的控制_continue
+
+continue的作用：跳过 本次循环操作，继续下一次循环
+*/
+public class Demo_continue {
+    public static void main(String[] args) {
+        //打印1~10(在打印时，遇到4就不要打印，其他都要打印)1~10都要打印除了4
+        for (int i = 1; i <= 10; i++) {
+            if (i == 4) {
+                continue;
+            }
+            System.out.println(i);
+        }
+
+        System.out.println("程序结束");
+    }
+}