/*
?*?（1）封裝一類接口ComputerWeight，
?*?該接口中有3個功能：double?computrWeight，
?*?void?printName，double?printPrice。
*/
package?li;?
public?interface?ComputerWeight?{
	double?computerWeight();
	void?printName();
	double?printPrice();
}
/*
?*?（2）封裝一類接口ComputerCompany，
?*?該接口有2個功能：String?computerName，void?printFunction。
*/
?
package?li;
public?interface?ComputerCompany?{	
	String?computerName();
	void?printFunction();
}
/*（3）封裝一類對象FlashMemory實現上述兩類接口。*/
?
package?li;?
public?class?FlashMemory?implements?ComputerWeight,ComputerCompany?
{
????public?double?computerWeight()
????{
????	double?weigh?=?2.2;
????	return?weigh;
????}
	
	public?void?printName()
	{
		System.out.println?("lenovo");
	}
	
	public?double?printPrice()
	{
		double?price??=?5899;
		return?price;
	}
?
	public?String?computerName()?
	{
		String?s?=?"lenovo";
		return?s;
	}
?
	public?void?printFunction()
	{
		System.out.println("請注意保護好您的電腦！");
	}
?
}
/*（4）用一個程序執行入口Test測試上述對象。*/?
package?li;
public?class?Test?{
	/**
	?*?@param?args
	?*/
	public?static?void?main(String[]?args)?{
		//?TODO?Auto-generated?method?stub
????????FlashMemory?fm?=?new?FlashMemory();
????????double?weight,price;
????????String?name;
????????weight?=?fm.computerWeight();
????????price?=?fm.printPrice();
????????name?=?fm.computerName();
????????System.out.println("該品牌電腦的名字為:?"+name);
????????System.out.println(name+"的重量為：?"+weight+"kg.");
????????System.out.println(name+"的價格為：?"+price+"RMB.");
????????fm.printFunction();
	}
?
}

以上就是動力節點java培訓機構的小編針對“Java中有關接口的練習題”的內容進行的回答，希望對大家有所幫助，如有疑問，請在線咨詢，有專業老師隨時為你服務。