9.8（Fan類）設計一個名為Fan的類來代表風扇

• 題目
• • 破題
• 代碼
• • Test8
  • Test8_Fan
  • 執行結果
• UML

題目

破題

Test8：測試程序
Test8_Fan：實現題目要求

代碼

Test8

public class Test8 {public static void main(String[] args) {Test8_Fan fan0 = new Test8_Fan();fan0.setSpeed(Test8_Fan.FAST);fan0.setradius(10);fan0.setColor("yellow");fan0.setOn(true);Test8_Fan fan1 = new Test8_Fan();fan1.setSpeed(Test8_Fan.MEDIUM);fan1.setradius(5);fan1.setColor("blue");fan1.setOn(false);System.out.println(fan0.toString());System.out.println(fan1.toString());} }

Test8_Fan

public class Test8_Fan {static final int SLOW = 1, MEDIUM = 2, FAST = 3;private int speed = SLOW;private boolean on = false;private double radius = 5;String color = "blue";// getter and setterpublic int getSpeed() {return speed;}public void setSpeed(int speed) {this.speed = speed;}public boolean isOn() {return on;}public void setOn(boolean on) {this.on = on;}public double getradius() {return radius;}public void setradius(double radius) {this.radius = radius;}public String getColor() {return color;}public void setColor(String color) {this.color = color;}// 無參構造方法public Test8_Fan(){}// 返回字符串public String toString(){if (on) {return speed + " " + color + " " + radius;} else {return "fan is off";}} }

執行結果

3 yellow 10.0
fan is off

UML

總結

以上是生活随笔為你收集整理的Java黑皮书课后题第9章：9.8（Fan类）设计一个名为Fan的类来代表风扇的全部內容，希望文章能夠幫你解決所遇到的問題。

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