Java实现老师按学生成绩处理学生成绩分级优良中差,并给出评语!

首先简单介绍下,建立一个enum chengji枚举用来存储优良中差,并建立学生类stu,老师类tea ,测试类分别进行编写:
测试结果如下:

enum类:

public enum chengji {
	
    /**90-100*/
	优,
	/**80-90*/
	良,
	/**60-80*/
	中,
	/**0-60*/
	差

}

学生类stu:

package 成绩;

/**
 * @author 葛帅帅
 *
 */
public class stu {
	private int id;
	private String name;
	private double fen;
	private chengji cheng;
	public stu(int id, String name, double fen) {
		super();
		this.id = id;
		this.name = name;
		this.fen = fen;
		if(fen>=90&&fen<=100) {
			this.cheng=chengji.优;
		}
		if(fen>=80&&fen<=90) {
			this.cheng=chengji.良;
		}
		if(fen>=60&&fen<80) {
			this.cheng=chengji.中;
		}
		if(fen>=0&&fen<60) {
			this.cheng=chengji.差;
		}
	}
	public int getId() {
		return id;
	}
	public String getName() {
		return name;
	}
	public double getFen() {
		return fen;
	}
	public chengji getCheng() {
		return cheng;
	}
	

}

老师类tea:

package 成绩;

public class tea {
	private String name;

	public tea(String name) {
		super();
		this.name = name;
	}

	public void dothing(stu s) {
		System.out.print("我是"+s.getName()+"班主任,"+"我叫"+this.name+",对于此次他的成绩"+s.getFen()+",我认为:");
		switch(s.getCheng()) {
		case 中:
			System.out.print("再接再厉!\n");
			break;
		case 优:
			System.out.print("发奖状!\n");

			break;
		case 差:
			System.out.print("假期补补课,别玩了!\n");

			break;
		case 良:
			System.out.print("还有上升空间,加油!\n");

			break;
		default:
			System.out.print("成绩有误,不能评级");

			break;
		
		}
		
	}
	

}

测试类text:

package 成绩;

public class text {

	public static void main(String[] args) {
		stu s1=new stu(1001, "葛帅帅", 96);
		stu s2=new stu(1002, "李心语", 83);	
		stu s3=new stu(1003, "陈玉龙", 26);	
		tea t=new tea("陈宇");
		t.dothing(s1);
		t.dothing(s2);
		t.dothing(s3);
	}

}

程序运行结果:

此程序适合Java初学者,主要用到switch,枚举类型,类的封装等小知识点,希望对你有所帮助,加油!