json-java

// PuzzleList.java

import java.util.Iterator;
import java.util.List;
public class PuzzleList implements Iterable<Puzzle> {
    private List<Puzzle> data;

    public PuzzleList() {
        super();
    }
    public PuzzleList(List<Puzzle> data) {
        this.data = data;
    }
    public List<Puzzle> getData() {
        return this.data;
    }
    public void setData(List<Puzzle> data) {
        this.data = data;
    }
    public Iterator<Puzzle> iterator() {
        return data.iterator();
    }
}

// Puzzle.java

public class Puzzle {
    private String created_time;
    private String message;
    private String id;

    public Puzzle() {
        super();
    }
    public Puzzle(String created_time, String message, String id) {
        this.created_time = created_time;
        this.message = message;
        this.id = id;
    }
    public String toString() {
        return String.format("created_time: %s, message: %s, id: %s", this.created_time, this.message, this.id);
    }
    public String getCreated_time() {
        return this.created_time;
    }
    public void setCreated_time(String created_time) {
        this.created_time = created_time;
    }
    public String getMessage() {
        return this.message;
    }
    public void setMessage(String message) {
        this.message = message;
    }
    public String getId() {
        return this.id;
    }
    public void setId(String id) {
        this.id = id;
    }
}

//Main.java

import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.IOException;

ObjectMapper mapper = new ObjectMapper();
try {
    PuzzleList puzzles = mapper.readValue(jsonblob, PuzzleList.class);
    for (Puzzle puzzle: puzzles) {
        System.out.println(puzzle);
    }
} catch (IOException e) {
    System.err.println(e.getMessage());
}