有大佬能把子类中每行程序详细的解释一下吗class Employee{ String name; int salary; public Employee(String name, int salary){ this.name=name; this.salary=salary; } public String getDetails(){ return"Name:"+name+","+"Salary:"+salary; }}public class Manager extends Employee{ String department; public Manager(String name,int salary,String department){ super(name,salary); this.department=department; } public String getDetails(){ return super.getDetails()+","+"部门:"+department; ｝ public static void main (String[]args){ Manager m=new Manager("张三", 5000,"财务部"); System.out.println(m.getDetails()); }}