根据自定义对象将对象列表排序为字段[duplicate]之一

Question

public class Employee {

private String name;
private String id;
private Address address;

public String getName() {
        return name;
    }

    public Employee setName(String name) {
        this.name = name;
        return this;
    }


    public String getId() {
        return id;
    }

    public Employee setId(String id) {
        this.id = id;
        return this;
    }


    public Address getAddress() {
        return address;
    }

    public Employee setName(Address address) {
        this.address = address;
        return this;
    }


}

public class Address{
    
    public String streetName;
    public String streetNumber;

public String getName() {
        return streetName;
    }

    public Address setStreetName(String streetName) {
        this.streetName = streetName;
        return this;
    }


    public String getId() {
        return id;
    }

    public Address setStreetNumber(String streetNumber) {
        this.streetNumber = streetNumber;
        return this;
    }

}

Employee是上面定义的类之一，Address是Employee字段之一的数据类型之一。列表需要根据员工的地址字段中的街道名称进行排序。

这可以通过编写自定义比较器来完成。我正在寻找一种使用JavaLambda进行排序并获得排序列表的方法？

Answer 1

您可以创建一个比较器，如下所示或@Hadi J在注释中的方式：

Comparator<Employee> byStreetName = (emp1, emp2) -> emp1.getAddress().getName().compareTo(
                                                    emp2.getAddress().getName());

然后像这样使用它：

myList.sort(byStreetName);

或者如果您正在使用流

myList.stream().sorted(byStreetName)...