import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;

import java.io.IOException;


public class ObjectMapperGeneric {


    public static void main(String[] args) {
        String jsonOne = "{\"code\":\"my code\", \"value\":\"some value\"}";
        String jsonTwo = "{\"number\":1, \"value\":\"some value\"}";
        try {

            DtoOne one = new ObjectMapperGeneric().jsonGeneric(jsonOne);
            DtoOne two = new ObjectMapperGeneric().jsonGeneric(jsonTwo);

            System.out.println();
        } catch (Exception e){
            e.printStackTrace();
        }
    }


    private <T> T jsonGeneric(String json) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        return mapper.readValue(json, new TypeReference<T>(){});

    }
}

class DtoOne{
    @JsonProperty("code")
    private String code;

    @JsonProperty("value")
    private String value;

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }
}

class DtoTwo{
    @JsonProperty("number")
    private Integer number;

    @JsonProperty("value")
    private String value;

    public Integer getNumber() {
        return number;
    }

    public void setNumber(Integer number) {
        this.number = number;
    }

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }
}