第十二章

public class showMainMenu {
    /**
     * ScoreCalc类
     * @author chris
     * @version 2.0 2013/06/01
     */
	public class ScoreCalc {
		/**java成绩*/
		int java;
		/**C#成绩*/
		int c;
		/**db成绩*/
		int db;
		/**
		 * 计算总成绩
		 * @return toyal
		 */
		public int calcTotalScore(){
			int total = java + c + db;
			return total;
		}
		/**
		 * 显示总成绩
		 */
		public void showTotalScore(){
			System.out.println("总成绩是: " + calcTotalScore());
		}
		/**
		 * 计算平均成绩
		 * @return avg
		 */
		public double calcAcg(){
			double avg = (java + c + db) / 3.0;
			return avg;
		}
		public void showAvg(){
			System.out.println("平均成绩是: " + calcAcg());
		}
	}
}