7.Merge Two Files

import java.io.BufferedReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;

public class streams1_Exercises_7Merge_Two_Files {
    public static void main(String[] args) {

        String input = "C:\\Users\\kk\\Desktop\\SoftUni\\Java Advanced\\Lections\\" +
                "04. Java-Exercises_Advanced-Streams-Files-and-Directories-Resources (1)\\" +
                "04. Java-Advanced-Files-and-Streams-Exercises-Resources\\";
        String pathOne = input + "inputOne.txt";
        String pathTwo = input + "inputTwo.txt";
        String pathOut = input + "outMergeFiles.txt";

        try (BufferedReader bfOne = Files.newBufferedReader(Paths.get(pathOne));
             BufferedReader bfTwo = Files.newBufferedReader(Paths.get(pathTwo));
             PrintWriter printWriter = new PrintWriter(pathOut)) {

            String inpuOne = bfOne.readLine();
            List<String> textOne = new ArrayList<>();

            while (inpuOne != null) {
                textOne.add(inpuOne);
                inpuOne = bfOne.readLine();
            }

            String inpuTwo = bfTwo.readLine();
            List<String> textTwo = new ArrayList<>();

            while (inpuTwo != null) {
                textTwo.add(inpuTwo);
                inpuTwo = bfTwo.readLine();
            }

            int size = textOne.size() + textTwo.size();
            int num = -1;
            for (int i = 0; i < size; i++) {
                if (i < textOne.size()) {
                    printWriter.write(textOne.get(i));
                    printWriter.write('\n');
                    if (i == textOne.size() - 1) {
                        num = i + 1;
                    }
                } else {
                    printWriter.write(textTwo.get(i - num));
                    printWriter.write('\n');
                }
            }


        } catch (IOException e) {
            e.printStackTrace();
        }
     }
}