Error with Writing Files, don't know why??

[teekei]

/**
 * @(#)CreateData.java
 *
 * CreateData application
 *
 * @author
 * @version 1.00 2011/7/17
 */
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.util.IllegalFormatException;
 import java.util.FormatterClosedException;
 import java.io.*;

public class CreateData
{

    public static void main(String[] args) throws FileNotFoundException, IllegalFormatException, FormatterClosedException
    {
      try
      {
	      AccountRecord[] accounts = new AccountRecord[4];
	      // create account records
	      accounts[ 0 ] = new AccountRecord( 100, "Alan", "Jones", 348.17 );
	      accounts[ 1 ] = new AccountRecord( 300, "Mary", "Smith", 27.19 );
	      accounts[ 2 ] = new AccountRecord( 500, "Sam", "Sharp", 0.00 );
	      accounts[ 3 ] = new AccountRecord( 700, "Suzy", "Green", -14.22 );

      	  accounts.write("Accounts.txt");
      }
      catch(FileNotFoundException fileNotFound)
      {
      	System.err.println("File not found.");
      }
      catch(SecurityException securityException)
      {
      	System.err.println("Security error detected.");
      }
      catch(IllegalFormatException illegalFormat)
      {
      	System.err.println("Illegal format.");
      }
      catch(FormatterClosedException formatterClosed)
      {
      	System.err.println("Error writing to file.");
      }
    }
}

[Junky]

Neither do we unless you tell us what errors you get. Copy and paste the full and exact message.

[teekei]

I'm sorry.

symbol  : method write(java.lang.String)
location: class AccountRecord[]
      	  accounts.write("Accounts.txt");
      	          ^
1 error

Process completed.

[Junky]

Did you read the error message?
Did you try to understand the error message?
What class is accounts?
Does that class have a write method?
Which class does have a write method?

[teekei]

No the class does not have the write method, I want to know if I can use the write method just in main rather than in my class because I've been looking up how to write to a file and I see that the write method works perfectly fine for them so I'm just curious as to why it's not working for me, do I have to import a package in order for it to compile, I'm stuck right now.

[Junky]

It works perfectly fine in code examples because they would have created an output stream. Where in your code have you done that?

[amanrv]

my friend, you first have to declare the file, then use bufferedwriter, then use the write statement, somewhat like this

File file=new File("Accounts.txt");
BufferedWriter in=new BufferedWriter(new FileWriter(file, true));
in.write(accounts)   //if its a string

[JosAH]

my friend, you first have to declare the file, then use bufferedwriter, then use the write statement, somewhat like this

File file=new File("Accounts.txt");
BufferedWriter in=new BufferedWriter(new FileWriter(file, true));
in.write(accounts)   //if its a string

I find it confusing at best to name a writer 'in'.

kind regards,

Jos

[teekei]

If you don't mind me asking, do I have to import a specific package in order to use the "BufferedWriter"?

[JosAH]

If you don't mind me asking, do I have to import a specific package in order to use the "BufferedWriter"?

What does the API documentation for that class say about it?

kind regards,

Jos

[teekei]

So I imported all the necessary packages and modified to code to accommodate the changes but I still am getting a "cannot find symbol method write(AccountRecord[])"

Here's my code

 import java.io.File;
 import java.io.FileNotFoundException;
 import java.util.IllegalFormatException;
 import java.util.FormatterClosedException;
 import java.io.BufferedWriter;
 import java.io.FileWriter;
public class CreateData
{

    public static void main(String[] args) throws FileNotFoundException, IllegalFormatException, FormatterClosedException
    {
      try
      {
	      AccountRecord[] accounts = new AccountRecord[4];
	      // create account records
	      accounts[ 0 ] = new AccountRecord( 100, "Alan", "Jones", 348.17 );
	      accounts[ 1 ] = new AccountRecord( 300, "Mary", "Smith", 27.19 );
	      accounts[ 2 ] = new AccountRecord( 500, "Sam", "Sharp", 0.00 );
	      accounts[ 3 ] = new AccountRecord( 700, "Suzy", "Green", -14.22 );

      	  File file=new File("Accounts.txt");
		  BufferedWriter in=new BufferedWriter(new FileWriter(file, true));
		  in.write(accounts);
      }
      catch(FileNotFoundException fileNotFound)
      {
      	System.err.println("File not found.");
      }
      catch(SecurityException securityException)
      {
      	System.err.println("Security error detected.");
      }
      catch(IllegalFormatException illegalFormat)
      {
      	System.err.println("Illegal format.");
      }
      catch(FormatterClosedException formatterClosed)
      {
      	System.err.println("Error writing to file.");
      }
    }
}

Here's my error message

F:\Lab11\CreateData.java:30: cannot find symbol
symbol  : method write(AccountRecord[])
location: class java.io.BufferedWriter
		  in.write(accounts);
		    ^
1 error

[Junky]

Ah yes, the old "copy code and dump into my project without understanding it" trick.

Go to the Java API for the BufferedWriter class and find a method that takes an Object array as the parameter.