xx/javaSE251223
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

day09--抽象类的使用&作用

Browse Source
This commit is contained in:
xuxin
2026-01-06 10:58:37 +08:00
parent ca77c9496b
commit 5a5bc8e343
4 changed files with 52 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
day07/day07.iml Normal file
View File

@@ -0,0 +1,11 @@
<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
</content>
<orderEntry type="jdk" jdkName="17" jdkType="JavaSDK" />
<orderEntry type="sourceFolder" forTests="false" />
</component>
</module>

11
day08/day08.iml Normal file
View File

@@ -0,0 +1,11 @@
<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
</content>
<orderEntry type="jdk" jdkName="17" jdkType="JavaSDK" />
<orderEntry type="sourceFolder" forTests="false" />
</component>
</module>

11
day09/day09.iml Normal file
View File

@@ -0,0 +1,11 @@
<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
</content>
<orderEntry type="jdk" jdkName="17" jdkType="JavaSDK" />
<orderEntry type="sourceFolder" forTests="false" />
</component>
</module>

19
day09/src/com/inmind/abstract06/test/Demo09.java Normal file
View File

@@ -0,0 +1,19 @@
package com.inmind.abstract06.test;
/*
- 定义形状抽象类Shape，矩形Rectangle和圆形Circle继承Shape类。
- 圆形只能通过指定半径的方式，创建Circle对象。
- 矩形只能通过指定长，宽的方法，创建Rectangle对象。
并且计算出各自的面积和周长
分析：
1.Shape类是一个父类，可以将各种图形的属性抽取到该类中（比如长方形 的长宽，圆的半径）
2.矩形Rectangle和圆形Circle继承Shape类，可以通过构造方法将指定的属性值传递给父类进行保存
3.可以将面积和周长的方法实现定义为抽象方法，由指定的子类具体实现
*/
public class Demo09 {
public static void main(String[] args) {
}
}