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java coding

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  #1  
Old 24-10-2010
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Join Date: Oct 2010
Posts: 3
java coding
  

I am working on a java project,i want to sequentially read an ASCII file into an arraylist and then add a method to print out the array. i want to also be able to search through the ASCII file

can anyone help me with the coding. will realy b much appreciated

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  #2  
Old 27-10-2010
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Join Date: Nov 2008
Posts: 1,192
Re: java coding

The first thing is I do not use an array but a class called ArrayList which lets you add elements without first identifying the length (we do not know a prior how many lines you have the file).
Code:
import java.util.ArrayList;
{Leef class 
public static void main (String [] arg) { 
File file = null; 
FileReader fr = null; 
ArrayList lines = new ArrayList (); 
try { 
file = new File ("C: / file.txt"); 
String line; 
fr = new FileReader (file); 
BufferedReader br = new BufferedReader (fr) 
while ((line = br.readLine ())!= null) { 
lineas.add (line); 
} 
System.out.print ("The Vector is: \ n ");// UNDER THE DATA SHOW 
for (int j = 0, j <lineas.size () j + +) { 
line = (String) lineas.get (j); 
System.out.print (line + "\ n"); 
} 
} / / END TRY 
catch (IOException e) { 
System.out.println (e); 
} 
finally { 
try {/ / finally block is always executed, so if the file is closed 
if (fr! = null) {/ / at the end of the first try, and has an error before, would 
fr.close (), / / the 1st catch and then would leave, leaving it open. It is convenient 
} / / Close here, proving that not-for a previous error, as 
} Catch (IOException e) {/ / not be read or does not exist - null value. 
} 
} 
System.exit (0);} 
}
And if you are trying to read an ASCII file into an arraylist, then following code will help you :
Code:
FileReader myFile = new FileReader ("path");
  BufferedReader buffer = new BufferedReader (myFile);
  String string = file buffer.readLine (); 
  dateString.getBytes ("ASCII");
or
Code:
FileInputStream my file = new FileInputStream ("path");
 BufferedReader buffer = new BufferedReader (new InputStreamReader (myFile, "ASCII"));
 <Integer> ArrayList list = new ArrayList <Integer> ();
 list.add (buffer.read ());
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