String id, name, code = "x0123456";
	int point;
	char eval;

	Student3() {
		setParam("00x0000", "none", "x0000000", -1, ' ');
	}

	Student3(String cid, String cname, int cpoint) {
		char ev = eva(cpoint);
		setParam(cid, cname, code, cpoint, ev);
	}

	Student3(String cid, String cname, String ccode, int cpoint) {
		char ev = eva(cpoint);
		setParam(cid, cname, ccode, cpoint, ev);
	}

	private static char eva(int p) {
		int rank;
		char c;

		if (p < 0 || p > 100)
			c = 'X';
		else {
			rank = p/10;

			switch (rank) {
				case 6: c = 'C'; break;
				case 7: c = 'B'; break;
				case 8: c = 'A'; break;
				case 9:
				case 10: c = 'S'; break;
				default: c = 'D';
			}
		}

		return c;
	}

	void setParam(String pid, String pname, String pcode, int ppoint, char peval) {
		id = pid;
		name = pname;
		code = pcode;
		point = ppoint;
		eval = peval;
	}

	void dataDisp() {
		System.out.println("学籍番号:"+id+"\t氏名:"+name+"\t授業コード:"+code);
		System.out.println("\t点数:"+point+"\t評価:"+eval);
	}