How can I get the data from the file using the buffer reader method in the java programming language?

Write a program in Java How to enter values from the keyboard and store them in a 4 x 4 matrix, then print them in an organized manner

Select all true statements   import java.io.File; import java.util.Scanner;   public class DirectorySize {   public static void main(String[] args) {     // Prompt the user to enter a directory or a file     System.out.print("Enter a directory or a file: ");        Scanner input = new Scanner(System.in);     String directory = input.nextLine();         // Display the size     System.out.println(getSize(new File(directory)) + " bytes");   }     public static long getSize(File file) {     long size = 0; // Store the total size of all files       if (file.isDirectory()) {       File[] files = file.listFiles();        for (int i = 0; files != null && i < files.length; i++) {         size += getSize(files[i]); // Recursive call       }     }     else { // Base case       size += file.length();     }       return size;   } }   a. The length() method returns the size of a file.   b. The listFiles() method returns an array of File objects and excludes each directory.…

how to write a method that reads in any csv file and extracts the data from the csv file into header and the remaining data using the csv module, and stores them in instance variables. also how to write a code to handle potential errors with file content such as empty file and file not found in python?