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!

爱被打了一巴掌 2022-03-27 13:14 312阅读 0赞

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:  
![在这里插入图片描述][20190113202703421.png]  
**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:**  
![在这里插入图片描述][20190113202627549.png]  
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!

[20190113202703421.png]: /images/20220327/756cd82c7e7d4293810867ecb1416a3f.png
[20190113202627549.png]: /images/20220327/7902d26baff248f7b7573822c79645a7.png