Classwork Demo (03-03-2022)

import java.io.*;
import java.util.Scanner;
//import java.io.PrintWriter;

public class Week5Extra {


    public static void main (String[] args) {
        
        /*
         * Java PrintWriter Documentation:
         * https://docs.oracle.com/javase/7/docs/api/java/io/PrintWriter.html#println()
         */

        /* Writing output to a text file using PrintWriter */

        try {
            
            PrintWriter file_handler = new PrintWriter("output.txt");
            file_handler.println("Sample text 1");
            file_handler.println("Sample text 2");
            file_handler.close();

        } catch(Exception e){
            // e.printStackTrace();
            System.out.println("[!] Error occured while writing file");
            System.exit(1);
        }
        
        // try {

        //     PrintWriter fh = new PrintWriter( new BufferedWriter( 
        //                 new FileWriter("output.txt", true))); // 2nd parameter set to true 
        //                                                       // allows appending to text file
        //     fh.append("Sample text 3\n");
        //     fh.append("Sample text 4\n");
        //     fh.close();

        // } catch(Exception e){
        //     // e.printStackTrace();
        //     System.out.println("[!] Error occured while writing file");
        //     System.exit(1);
        // }


        /* Reading from file */

        // try {

        //     Scanner scan_file = new Scanner(new File("sample-cars.txt"));

        //     while (scan_file.hasNext()){
        //         System.out.println(scan_file.nextLine());
        //     }

        //     scan_file.close();

        // } catch (Exception e){
        //     // e.printStackTrace();
        //     System.out.println("[!] Error occured while reading file");
        //     System.exit(1);
        // }

    }
}