6 接口与多态

接口与多态

我的理解：

接口与多态    与    子类与多态非常类似

子类与多态：一个父类有很多个不同的子类，被许多个子类继承（是继承的概念）

接口与多态：一个接口由很多个子类实现（是实现的概念）

interface CompurerAverage{
    public double average(double a,double b);
}
class A implements CompurerAverage{
    public double average(double a,double b){
        double aver =0;
        aver =(a+b)/2;
        return aver;
    }
}
class B implements CompurerAverage{
    public double average(double a,double b){
        double aver =0;
        aver =Math.sqrt(a*b);
        return aver;
    }
}
public class Example6_4 {
    public static void main(String[] args) {
        CompurerAverage computer;
        double a=11.23,b=22.78;
        computer =new A();
        double result = computer.average(a,b);
        System.out.printf("%5.2f和%5.2f的算数平均值：%5.2f\n",a,b,result);
        computer=new B();
        result = computer.average(a,b);
        System.out.printf("%5.2f和%5.2f的算数平均值：%5.2f\n",a,b,result);
    }
}

TRANSLATE with x English

Arabic	Hebrew	Polish
Bulgarian	Hindi	Portuguese
Catalan	Hmong Daw	Romanian
Chinese Simplified	Hungarian	Russian
Chinese Traditional	Indonesian	Slovak
Czech	Italian	Slovenian
Danish	Japanese	Spanish
Dutch	Klingon	Swedish
English	Korean	Thai
Estonian	Latvian	Turkish
Finnish	Lithuanian	Ukrainian
French	Malay	Urdu
German	Maltese	Vietnamese
Greek	Norwegian	Welsh
Haitian Creole	Persian

  TRANSLATE with COPY THE URL BELOW Back EMBED THE SNIPPET BELOW IN YOUR SITE Enable collaborative features and customize widget: Bing Webmaster Portal Back

标签：5.2,double,多态,接口,computer,aver,public
来源： https://www.cnblogs.com/xianbing2022/p/16444946.html