From 416c5c5d57cf8e52d4e172aff5366a5917a228f9 Mon Sep 17 00:00:00 2001 From: xuxin <840198532@qq.com> Date: Fri, 9 Oct 2026 14:51:04 +0800 Subject: [PATCH] =?UTF-8?q?day11--=E5=9B=9B=E7=A7=8D=E6=9D=83=E9=99=90?= =?UTF-8?q?=E4=BF=AE=E9=A5=B0=E7=AC=A6?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- day11/src/com/inmind/limit02/Class1.java | 11 +++++++++ day11/src/com/inmind/limit02/LimitDemo05.java | 24 +++++++++++++++++++ day11/src/com/inmind/limit02/sub/Class2.java | 14 +++++++++++ day11/src/com/inmind/limit02/sub/Class3.java | 13 ++++++++++ 4 files changed, 62 insertions(+) create mode 100644 day11/src/com/inmind/limit02/Class1.java create mode 100644 day11/src/com/inmind/limit02/LimitDemo05.java create mode 100644 day11/src/com/inmind/limit02/sub/Class2.java create mode 100644 day11/src/com/inmind/limit02/sub/Class3.java diff --git a/day11/src/com/inmind/limit02/Class1.java b/day11/src/com/inmind/limit02/Class1.java new file mode 100644 index 0000000..100a475 --- /dev/null +++ b/day11/src/com/inmind/limit02/Class1.java @@ -0,0 +1,11 @@ +package com.inmind.limit02; + +public class Class1 { + public static void main(String[] args) { + //在同一个包中只有私有的内容,不能被访问 + //System.out.println(LimitDemo05.num1); + System.out.println(LimitDemo05.num2); + System.out.println(LimitDemo05.num3); + System.out.println(LimitDemo05.num4); + } +} diff --git a/day11/src/com/inmind/limit02/LimitDemo05.java b/day11/src/com/inmind/limit02/LimitDemo05.java new file mode 100644 index 0000000..d13a30c --- /dev/null +++ b/day11/src/com/inmind/limit02/LimitDemo05.java @@ -0,0 +1,24 @@ +package com.inmind.limit02; +/* +6.四种权限修饰符:可以用来修饰类,方法,成员变量 + public > protected > (default) > private +同一个类中 YES YES YES YES +同一个包 YES YES YES NO +在不同包(父子关系) YES YES NO NO +在不同包(非父子关系) YES NO NO NO + + */ +public class LimitDemo05 { + //定义4种权限的静态变量 + private static int num1 = 10; + static int num2 = 20; + protected static int num3 = 30; + public static int num4 = 40; + + public static void main(String[] args) { + System.out.println(num1); + System.out.println(num2); + System.out.println(num3); + System.out.println(num4); + } +} diff --git a/day11/src/com/inmind/limit02/sub/Class2.java b/day11/src/com/inmind/limit02/sub/Class2.java new file mode 100644 index 0000000..d39440c --- /dev/null +++ b/day11/src/com/inmind/limit02/sub/Class2.java @@ -0,0 +1,14 @@ +package com.inmind.limit02.sub; + +import com.inmind.limit02.LimitDemo05; + +//在不同包(父子关系) +public class Class2 extends LimitDemo05 { + public static void main(String[] args) { + //在不同包(父子关系),大于等于protected才可以被访问 + //System.out.println(LimitDemo05.num1); + //System.out.println(LimitDemo05.num2); + System.out.println(LimitDemo05.num3); + System.out.println(LimitDemo05.num4); + } +} diff --git a/day11/src/com/inmind/limit02/sub/Class3.java b/day11/src/com/inmind/limit02/sub/Class3.java new file mode 100644 index 0000000..b0329fe --- /dev/null +++ b/day11/src/com/inmind/limit02/sub/Class3.java @@ -0,0 +1,13 @@ +package com.inmind.limit02.sub; + +import com.inmind.limit02.LimitDemo05; + +public class Class3 { + public static void main(String[] args) { + //在不同包(父子关系),大于等于protected才可以被访问 + //System.out.println(LimitDemo05.num1); + //System.out.println(LimitDemo05.num2); + //System.out.println(LimitDemo05.num3); + System.out.println(LimitDemo05.num4); + } +}