Java輸入三個班每班三個人，輸入成績，分別計算每個班級的總分和平均分

代碼如下：

public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		int score;
		int sum = 0,avg;
		for(int i = 1;i <= 3 ;i++) {
			sum = 0;
			for(int j = 1;j <= 3;j++) {
				System.out.println("請輸入成績：");
				score = scanner.nextInt();
				sum += score;
			}
			avg = sum/3;
			System.out.println("第" + i + "班級的總分是" + sum);
			System.out.println("第" + i + "班級的平均分是：" + avg);
		}		
	}

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運行結果：