int po;

		Grade2 gr2a = new Grade2();
		Grade2 gr2b = new Grade2(85);

		gr2a.dispGrade();
		gr2b.dispGrade();

		gr2a.setGrade(90);
		gr2b.setGrade(78);

		System.out.println("--------------");

		gr2a.dispGrade();
		gr2b.dispGrade();

		po = 65;
		gr2a.point = po;
		gr2a.setGrade(po);

		po = 54;
		gr2b.point = po;
		gr2b.setGrade(po);

		System.out.println("--------------");

		gr2a.dispGrade();
		gr2b.dispGrade();