package event;

import com.fasterxml.jackson.databind.ObjectMapper;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class EventParser {

    private static final String fileName = "log.json";


    public static void main(String[] args) {
        try {
            List<Event> eventsFromFile = readEventsFromFile();
            System.out.println(eventsFromFile);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static List<Event> readEventsFromFile() throws IOException {
        List<Event> eventsFromFile = new ArrayList<>();
        ObjectMapper objectMapper = new ObjectMapper();
        BufferedReader bufferedReader = new BufferedReader(new FileReader(EventParser.fileName));
        while (bufferedReader.readLine() != null) {
            Event event = objectMapper.readValue(fileName, Event.class);
            eventsFromFile.add(event);
        }
        return eventsFromFile;
    }
}

[
  {
    "id": "scsmbstgra",
    "state": "STARTED",
    "type": "APPLICATION_LOG",
    "host": "12345",
    "timestamp": 1491377495212
  },
  {
    "id": "scsmbstgrb",
    "state": "STARTED",
    "timestamp": 1491377495213
  },
  {
    "id": "scsmbstgrc",
    "state": "FINISHED",
    "timestamp": 1491377495218
  },
  {
    "id": "scsmbstgra",
    "state": "FINISHED",
    "type": "APPLICATION_LOG",
    "host": "12345",
    "timestamp": 1491377495217
  },
  {
    "id": "scsmbstgrc",
    "state": "STARTED",
    "timestamp": 1491377495210
  },
  {
    "id": "scsmbstgrb",
    "state": "FINISHED",
    "timestamp": 1491377495216
  }
]

package event;

import java.sql.Timestamp;

public class Event {
    private String id;
    private String state;
    private String type;
    private String host;
    private Timestamp timestamp;

    public Event() {
    }

    public Event(String id, String state, Timestamp timestamp, String type, String host) {
        this.id = id;
        this.state = state;
        this.timestamp = timestamp;
        this.type = type;
        this.host = host;
    }

    public String getId() {
        return id;
    }

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

    public String getState() {
        return state;
    }

    public void setState(String state) {
        this.state = state;
    }

    public Timestamp getTimestamp() {
        return timestamp;
    }

    public void setTimestamp(Timestamp timestamp) {
        this.timestamp = timestamp;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public String getHost() {
        return host;
    }

    public void setHost(String host) {
        this.host = host;
    }
}

Task :EventParser.main()
com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'log': was expecting ('true', 'false' or 'null')
 at [Source: (String)"log.json"; line: 1, column: 4]
    at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:1804)
    at com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:703)
    at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._reportInvalidToken(ReaderBasedJsonParser.java:2853)
    at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._handleOddValue(ReaderBasedJsonParser.java:1899)
    at com.fasterxml.jackson.core.json.ReaderBasedJsonParser.nextToken(ReaderBasedJsonParser.java:757)
    at com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:4141)
    at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4000)
    at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3004)
    at event.EventParser.readEventsFromFile(EventParser.java:30)
    at event.EventParser.main(EventParser.java:18)