[Java deserialization] @JsonAlias field alias

  @JsonAliasYes An annotation provided by the library to specify multiple acceptable names or aliases for fields or methods when Jacksondeserializing data.JSON

  When you use @JsonAliasannotations, you can specify one or more aliases for fields or methods. This way, when Jacksondeserializing JSONthe data, it will try to match the name of the field or method with the given alias.

  Here is an example:

public class MyData {
    
    
    @JsonAlias({
    
    "first_name", "firstName"})
    private String firstName;

    // getters and setters
}

  In this example, MyDatathe class has one field firstName. Using @JsonAliasannotations, we specify two aliases: "first_name" and "firstName". When JSONdeserializing a , if JSONthe data contains one of these two aliases, Jacksonits value will be assigned to firstNamethe field.

JSONThis annotation is useful when   dealing with multiple versions of data or integrating with external systems, allowing fields or methods to accept different naming conventions.