3. ALL CAPITALS!

package StreamsFilesDirectories_Exercise;

import java.io.*;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.List;
import java.util.Locale;

public class AllCapitals_03 {
    public static void main(String[] args) throws IOException {
        String path = "C:\\Users\\I353529\\Desktop\\04. Java-Advanced-Files-and-Streams-Exercises-Resources\\input.txt";
        BufferedWriter writer = new BufferedWriter(new FileWriter("output.txt"));
        //1. прочитаме файла
        //2. обхождаме всеки ред -> правим всички букви главни -> записваме реда в нов файл

        //начин 1
        /*List<String> allLines = Files.readAllLines(Path.of(path));
        for (String line : allLines) {
            bw.write(line.toUpperCase());
            bw.newLine();
        }
        bw.close();*/

        BufferedReader reader = new BufferedReader(new FileReader(path));
        String line = reader.readLine();
        while (line != null) {
            writer.write(line.toUpperCase());
            writer.newLine();

            line = reader.readLine();
        }
        writer.close();
    }
}