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大家來幫我看下什么問題

interface?Inter?{
	public?static?final?int?NUM?=?3;
	public?abstract?void?show();
}
interface?Inter1{
	public?abstract?void?show();
}
?class?Test?implements?Inter,Inter1{
	?public?void?show()?{
		?System.out.println("多繼承方法被覆蓋！");
	}
?}

public?class?InterfaDemo?{

	public?static?void?main(String[]?args)?{
		Test?t=new?Test();
		System.out.println(t.NUM);
		System.out.println(Test.NUM);
		System.out.println(Inter.NUM);
		System.out.println(t.show());
	}

}

為什么System.out.println(t.show());這一段報錯啊

慕粉2333013499

2016-12-18

源自：Java入門第二季升級版 10-5

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2 回答

Zenith4Zen 回答被采納 +3 積分
2016-12-21

public?class?InterfaDemo?{
?
????public?static?void?main(String[]?args)?{
????????Test?t=new?Test();
????????System.out.println(t.NUM);
????????System.out.println(Test.NUM);
????????System.out.println(Inter.NUM);
????????/*System.out.println(*/t.show()/*)*/;
????????//直接使用t.show();就可以打印了，void方法沒有返回值無法打印
????????
????}
?
}