import java.io.*;
import java.util.ArrayList;

public class writeToFile {

    static String userName, passWord;

    public static void getCredentials() throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        System.out.println("Username :");
        userName = br.readLine();

        System.out.println("Password :");
        passWord = br.readLine();

        if (userName.equals("") || passWord.equals("")) {
            System.out.println("Enter username and password!");
            getCredentials();
        }

    }

    public static void saveCredentials() throws IOException {

        File someFile = new File("D://AppCr//credentials.txt");
        FileWriter writerMou = new FileWriter(someFile);
        writerMou.write(userName);
        writerMou.write(passWord);
        writerMou.close();

    }

    public static void readFile(String path) throws IOException {
        File myFile = new File(path);
        FileReader fr = new FileReader(myFile);
        BufferedReader br = new BufferedReader(fr);
        String s = br.readLine();

        System.out.println(s);
        fr.close();
    }

    public static void getFiles() throws IOException {
        String name = "";
        ArrayList<String> fileNames = new ArrayList<String>();
        File[] files = new File("C://Users//i2sbsBang003//Desktop//New folder").listFiles();
        int len = files.length;

        for (int i = 0; i < len; i++) {
            name = files[i].getName();
            fileNames.add(name);

            // System.out.println(files[i] + " " + i);
        }
        // System.out.println(fileNames);

        System.out.println("File Name :");
        BufferedReader buRe = new BufferedReader(new InputStreamReader(System.in));
        String userInp = buRe.readLine();
        boolean boo = fileNames.contains(userInp);
        if (boo == true) {
            int idx = fileNames.indexOf(userInp);
            // System.out.println(idx);
            String path = files[idx].getPath();
            // System.out.println(path);
            readFile(path);
            float fileSize = files[idx].length();
            System.out.println("File Size :" + fileSize);
        }
    }

    public static void main(String[] args) throws IOException {

        getCredentials();
        saveCredentials();
        getFiles();
    }
}