我有两个数组列表。每个都有 Employee 类型的对象列表。
Employee 类如下所示
public class Employee {
Employee(String firstname, String lastname, String employeeId) {
this.firstname = firstname;
this.lastname = lastname;
this.employeeId = employeeId;
}
private int id; // this is the primary key from employee table
private String firstname;
private String lastname;
private String employeeId; // manually assigned unique id to each employee
// getters and setters
}
我需要根据员工对象的属性（员工 ID）找到两个列表之间的差异。
员工 ID 是手动生成的分配给每个员工的唯一 ID。
import java.util.ArrayList;
import java.util.List;
public class FindDifferences {
public static void main(String args[]){
List<Employee> list1 = new ArrayList<Employee>();
List<Employee> list2 = new ArrayList<Employee>();
list1.add(new Employee("F1", "L1", "EMP01"));
list1.add(new Employee("F2", "L2", "EMP02"));
list1.add(new Employee("F3", "L3", "EMP03"));
list1.add(new Employee("F4", "L4", "EMP04"));
list1.add(new Employee("F5", "L5", "EMP05"));
list2.add(new Employee("F1", "L1", "EMP01"));
list2.add(new Employee("F2", "L2", "EMP02"));
list2.add(new Employee("F6", "L6", "EMP06"));
list2.add(new Employee("F7", "L7", "EMP07"));
list2.add(new Employee("F8", "L8", "EMP08"));
List<Employee> notPresentInList1 = new ArrayList<Employee>();
// this list should contain EMP06, EMP07 and EMP08
List<Employee> notPresentInList2= new ArrayList<Employee>();
// this list should contain EMP03, EMP04 and EMP05
}
}
