将代码重构到抽象的父类骨架中

src/main/java/com/github/hcsp/polymorphism/清炒菜心.java

@@ -1,13 +1,26 @@
 package com.github.hcsp.polymorphism;
 
-public class 清炒菜心 {
+public class 清炒菜心 extends 菜 {
+ public 清炒菜心() {
+ super("清炒菜心");
+ }
+
  public void 做个清炒菜心() {
- System.out.println("洗炒锅");
- System.out.println("倒一点点油");
- System.out.println("放青菜");
- System.out.println("炒啊炒啊炒");
+
  System.out.println("放酱油");
  System.out.println("放盐");
  System.out.println("香喷喷的清炒菜心出锅啦");
  }
+
+ @Override
+ public void 开始烹饪() {
+ System.out.println("放青菜");
+ System.out.println("炒啊炒啊炒");
+ }
+
+ @Override
+ public void 放佐料() {
+ System.out.println("放酱油");
+ super.放佐料();
+ }
 }

src/main/java/com/github/hcsp/polymorphism/煎牛排.java

@@ -1,13 +1,19 @@
 package com.github.hcsp.polymorphism;
 
-public class 煎牛排 {
- public void 煎个牛排() {
- System.out.println("洗煎锅");
- System.out.println("倒油");
+public class 煎牛排 extends 菜 {
+ public 煎牛排() {
+ super("煎牛排");
+ }
+
+
+ @Override
+ public void 开始烹饪() {
  System.out.println("放牛排");
  System.out.println("煎啊煎啊煎");
+ }
+
+ @Override
+ public void 放佐料() {
  System.out.println("放胡椒粉");
- System.out.println("放盐");
- System.out.println("香喷喷的煎牛排出锅啦");
  }
 }

src/main/java/com/github/hcsp/polymorphism/菜.java

@@ -1,6 +1,12 @@
 package com.github.hcsp.polymorphism;
 
 public class 菜 {
+ private String name;
+
+ public 菜(String name) {
+ this.name = name;
+ }
+
  public void 做一个菜() {
  洗锅();
  倒油();
@@ -9,13 +15,23 @@ public class 菜 {
  出锅();
  }
 
- public void 洗锅() {}
+ public void 洗锅() {
+ System.out.println("洗炒锅");
+ }
 
- public void 倒油() {}
+ public void 倒油() {
+ System.out.println("倒一点点油");
+ }
 
- public void 开始烹饪() {}
+ public void 开始烹饪() {
 
- public void 放佐料() {}
+ }
+
+ public void 放佐料() {
+ System.out.println("放盐");
+ }
 
- public void 出锅() {}
+ public void 出锅() {
+ System.out.println("香喷喷的" + name + "出锅啦");
+ }
 }

src/main/java/com/github/hcsp/polymorphism/西红柿炒鸡蛋.java

@@ -1,13 +1,16 @@
 package com.github.hcsp.polymorphism;
 
-public class 西红柿炒鸡蛋 {
- public void 做个西红柿炒鸡蛋() {
- System.out.println("洗炒锅");
- System.out.println("倒油");
+public class 西红柿炒鸡蛋 extends 菜 {
+ public 西红柿炒鸡蛋() {
+ super("西红柿炒鸡蛋");
+ }
+
+ @Override
+ public void 开始烹饪() {
  System.out.println("放鸡蛋");
  System.out.println("放西红柿");
  System.out.println("炒啊炒啊炒");
- System.out.println("放盐");
- System.out.println("香喷喷的西红柿炒鸡蛋出锅啦");
  }
+
+
 }