JAVA–關於介面的簡單實用

interface ComputerCompany {//該介面有2個功能：String computerName，void printFunction。public String computerName ();public void printFunction();}interface ComputerWeight {//該介面中有3個功能：double computrWeight，void printName，double printPrice。double computrWeight();void printName();double printPrice();}public class FlashMemory implements ComputerCompany {double computrWeight(){double i = 1.33;if (i>2){return 1.0;}else {return 2.0;}}public String computerName (){String s ="sd";return s;};public void printFunction(){System.out.println("這是訓練介面使用的代碼");};}

接下來是測試用的代碼

 

public class Test {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubFlashMemory f = new FlashMemory();System.out.println(f.computerName());System.out.println(f.computrWeight());f.printFunction();}}