preparing.DataReader.java Source code

Introduction

Here is the source code for preparing.DataReader.java

Source

package preparing;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

import com.google.common.base.Strings;

public class DataReader {
    /*
     * This method reads all data from specified directory. Use this method to get all input data at once
     * You had better to use the readLicense method through cycle if you want to handle the data simultaneously.
     * 
     * @returns                  data represented at the array of strings
     * @param files              array of absolute file paths
     */
    public static String[] readAllData(String[] filePaths) {
        String[] res = new String[filePaths.length];
        for (int i = 0; i < filePaths.length; i++) {
            res[i] = readLicense(filePaths[i]);
        }

        return res;
    }

    public static String readLicense(String filePath) {
        StringBuilder res = new StringBuilder();

        try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) {
            while (reader.ready()) {
                res.append(reader.readLine() + " ");
            }
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }

        if (Strings.isNullOrEmpty(res.toString()) || !res.toString().matches("^.*[A-Za-z]+.*$")) {
            return null;
        }
        return res.toString();
    }
}