Java 异常处理：读取员工信息并存储到 Map 集合

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

public class EmpTest {
    public static void main(String[] args) {
        Map<String, Emp> map = new HashMap<String, Emp>();
        try (BufferedReader br = new BufferedReader(new FileReader("emp.txt"))) {
            String line;
            while ((line = br.readLine()) != null) {
                String[] arr = line.split(",");
                Emp emp = new Emp(arr[0], Integer.parseInt(arr[1]), arr[2], Double.parseDouble(arr[3]));
                map.put(emp.getName(), emp);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入员工名字：");
        String name = scanner.nextLine();
        Emp emp = map.get(name.toLowerCase());
        if (emp == null) {
            System.out.println("查无此人");
        } else {
            System.out.println(emp.toString());
        }
    }
}

class Emp {
    private String name;
    private int age;
    private String gender;
    private double salary;

    public Emp(String name, int age, String gender, double salary) {
        this.name = name;
        this.age = age;
        this.gender = gender;
        this.salary = salary;
    }

    public String getName() {
        return name;
    }

    public String toString() {
        return '姓名：' + name + '，年龄：' + age + '，性别：' + gender + '，薪资：' + salary;
    }
}