import java.io.BufferedReader;

import java.io.FileReader;

import java.io.IOException;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

public class LogExtractor {

public static void main(String[] args) {

String logFilePath = "your_log_file.log"; // Replace with your log file path

String delimiter = ","; // Replace with your delimiter if needed

try {

List<Map<String, String>> data = extractData(logFilePath, delimiter);

// Process the extracted data

for (Map<String, String> row : data) {

System.out.println(row); // Or perform other data migration tasks

}

} catch (IOException e) {

System.err.println("Error reading log file: " + e.getMessage());

}

}

public static List<Map<String, String>> extractData(String logFilePath, String delimiter) throws IOException {

List<Map<String, String>> data = new ArrayList<>();

try (BufferedReader br = new BufferedReader(new FileReader(logFilePath))) {

String line;

String[] headers = null;

// Read the header line

if ((line = br.readLine()) != null) {

headers = line.split(delimiter);

}

//If no headers, return empty list

if (headers == null) {

return data;

}

// Read each data line

while ((line = br.readLine()) != null) {

String[] values = line.split(delimiter);

if (values.length == headers.length) { // Ensure consistent number of values

Map<String, String> row = new HashMap<>();

for (int i = 0; i < headers.length; i++) {

row.put(headers[i], values[i]);

}

data.add(row);

}

}

}

return data;

}

}