相关疑难解决方法(0)

我完全相信我的问题很简单，但我无法用流来做（如果有没有流的方法也会有帮助）假设我们有这个用户列表

public class Users {
   String firstName;
   String lastName;
   double accountBalance;
   String type;
   String extraField;
}

并假设我们的 List < Users > 中有以下数据

"Users": [{
            "firstName": "Scott",
            "lastName": "Salisbury",
            "accountBalance": "100",
            "type" : "A"
        }, {
            "firstName": "John",
            "lastName": "Richards",
            "accountBalance": "200",
            "type" :"C"

        }, {
            "firstName": "John",
            "lastName": "Richards",
            "accountBalance": "200",
            "type " : "C",
            "ExtraField": "Apply"
        }]

这里的预期结果是因为 firstName、lastName 和 type 在列表中出现两次，只需合并常见的结果，而不会丢失任何字段
预期输出

"Users": [{
            "firstName": "Scott",
            "lastName": "Salisbury",
            "accountBalance": "100",
            "type" : "A"
        }, {
            "firstName": "John",
            "lastName": …