1 d array:: reading from files



Reading from a text file using the BufferedReader class

import java.io.*;
public class ArrayFile
{
  public static void main (String[] args) throws IOException
  {   
    BufferedReader fileObj = new BufferedReader (new FileReader ("scores.txt"));
    
    int score[] = new int [9];
    
    for (int i = 0 ; i < 9 ; i++)
    { 
      score [i] = Integer.parseInt (fileObj.readLine ());//read from scores.txt
      System.out.println (score [i]);
    }
    
  } // main method
} // ArrayFile class
 


Reading from a text file using the Scanner class

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

public class ScannerDemo
{
  public static void main (String[] args) throws IOException
  {   
    String line="";
    String word=""; 
    Scanner reader;
    
    // convert txt file into a File object first
    File fileObj = new File("scannerdemo.txt");
    Scanner freader = new Scanner(fileObj); 
    
    //instantiate write object for output
    PrintWriter writerobject = new PrintWriter(new FileWriter("moo.txt")); // foo.txt is output file
    
    while (freader.hasNextLine()) // checks to see if there is a line, if true, loop
    {                
      line = freader.nextLine(); // get entire line
      
      reader = new Scanner(line);
      
      word = reader.next(); 
      
      writerobject.println(word); // write to moo.txt

    }
     
    freader.close();  // MUST close this object
    writerobject.close();  // MUST close this object
  }
}