JavaOOP定义一个老师类和学生类并测试

た入场券 2023-02-25 07:22 33阅读 0赞

package homework;
    
    import java.util.Scanner;
    
    public class TeachersAndStudents {
    
    	public static void main(String[] args) {
    
    		Scanner sc = new Scanner(System.in);
    
    		while (true) {
    			System.out.println("----------1. 学员自我介绍；2. 学员分数录入 + 学分等级划定----------");
    			System.out.print("请输入操作数：");
    			int operands = sc.nextInt();
    			if (operands == 1) {
    				Student stu = new Student();
    				stu.StudentShowHimself();
    				break;
    			} else if (operands == 2) {
    				Teacher tea = new Teacher();
    				tea.StudentScore();
    				break;
    			} else {
    				System.out.println("\n提示：操作数有误！");
    				break;
    			}
    		}
    
    		sc.close();
    
    	}
    
    }
    
    class Teacher {
    
    	private int t_Id; // 教师编号
    	private String t_name; // 教师姓名
    
    	// 获取姓名
    	public String getT_name() {
    		return t_name;
    	}
    
    	// 设置姓名
    	public void setT_name(String t_name) {
    		this.t_name = t_name;
    	}
    
    	/**
    	 * 学生成绩录入
    	 * 
    	 * @return
    	 * 
    	 * @return
    	 */
    	public double[] StudentScore() {
    		Scanner sc = new Scanner(System.in);
    
    		System.out.println("\n学生成绩录入：");
    		double scoreArr[] = new double[5];
    		for (int i = 0; i < scoreArr.length; i++) {
    			System.out.print("请输入第 " + (i + 1) + " 个学生的成绩：");
    			scoreArr[i] = sc.nextDouble();
    		}
    		for (int i = 0; i < scoreArr.length; i++) {
    			System.out.print("第 " + (i + 1) + " 个学生的成绩：");
    			System.out.println(scoreArr[i]);
    		}
    
    		LevelDefined(scoreArr);
    		sc.close(); // 关闭扫描仪
    
    		return scoreArr;
    	}
    
    	/**
    	 * 分数等级划定
    	 * 
    	 * @param stuArr
    	 */
    	public void LevelDefined(double[] scoreArr) {
    		System.out.println("\n学分等级划定：");
    		double sumScore = 0.0;
    		for (int i = 0; i < scoreArr.length; i++) {
    			System.out.print("第 " + (i + 1) + " 个学生的成绩为 " + scoreArr[i] + " 分，等级 - ");
    			if (scoreArr[i] >= 90) {
    				System.out.println("A+");
    			} else if (scoreArr[i] >= 80 && scoreArr[i] <= 89) {
    				System.out.println("A");
    			} else if (scoreArr[i] >= 70 && scoreArr[i] <= 79) {
    				System.out.println("B");
    			} else if (scoreArr[i] >= 60 && scoreArr[i] <= 69) {
    				System.out.println("C");
    			} else {
    				System.out.println("D");
    			}
    			sumScore += scoreArr[i];
    		}
    		System.out.println("提示：学生组平均成绩为：" + (sumScore / scoreArr.length) + "分！");
    	}
    
    }
    
    class Student {
    
    	private int stuNumber; // 学生学号
    	private String name; // 学生姓名
    	private String classId; // 学生班级
    	private double score; // 学生成绩
    
    	/**
    	 * 学生信息自我展示
    	 */
    	public void StudentShowHimself() {
    		Scanner sc = new Scanner(System.in);
    
    		Teacher tea = new Teacher(); // 实例化老师类
    		Student stu = new Student(); // 实例化学生类
    		System.out.print("\n请输入学生姓名：");
    		stu.name = sc.next();
    		System.out.print("请输入学生班级：");
    		stu.classId = sc.next();
    		System.out.print("请输入学生学号：");
    		stu.stuNumber = sc.nextInt();
    		System.out.print("请输入任课老师：");
    		tea.setT_name(sc.next());
    		System.out.println("\n自我介绍：");
    		System.out.println(
    				"我是" + stu.name + "，我来自" + stu.classId + "，我的学号是" + stu.stuNumber + "，我的老师是" + tea.getT_name() + "！");
    
    		sc.close(); // 关闭扫描仪
    	}
    
    }