Create a Text file with java.

[javaforums1]

hi friends

i am new in java . I'm tring to know java thats why i'm reading a book "Java: How to Learn program by Detiel and detiel " .there is code for Create Text file for sequential data access in this book's chapter 17.

here i can create text file but i could not input any data in that file . When input data and type <ctrl>z it shows me" invalid data". I think the try block of AddRecord method doesnot work .Where is my wrong ? can any body help me? here my code:

public class AccountRecord {
    private int account;
    private String firstName;
    private String lastName;
    private double balance;
    
    public AccountRecord(){this(0," "," ",0.0);}
    
    public AccountRecord(int acct,String first,String last,double bal )
    {setAccount(acct);setFirstName(first);setLastName(last);setBalance(bal);}
    public void setAccount(int acct){account=acct;}
    public int getAccount(){return account;}
    public void setFirstName(String first){firstName=first;}
    public String getFirstName(){return firstName;}
    public void setLastName(String last){lastName=last;}
    public String getLastName(){return lastName;}
    public void setBalance(double bal){balance=bal;}
    public double getBalance(){return balance;}
}

package createtextfiletest;

import com.sun.xml.internal.ws.api.pipe.NextAction;
import java.io.FileNotFoundException;
import java.util.Formatter;
import java.util.Scanner;
import java.util.logging.Level;
import java.util.logging.Logger;

public class CreateTextFile {
    
    public Formatter output;
    
    public void OpenFile()
    {
        
        try {
                output = new Formatter("Clients.txt");
            } 
        catch (FileNotFoundException ex) {
                System.err.printf("\n File Not Found");
                System.exit(1);
            }

    }
    
   
    
    public void AddRecord()
    {
    Scanner input = new Scanner(System.in);
    AccountRecord rcd= new AccountRecord();
        System.out.printf("\nFor windows type <ctrl> z press enter for end of data indicator\n");
        System.out.printf("Enter account no>0,firstname,lastName, and balace\n");
        while(input.hasNext())
        {
        try
        {
            rcd.setAccount(input.nextInt());
            rcd.setFirstName(input.next());
            rcd.setLastName(input.next());
            rcd.setBalance(input.nextDouble());
            
            if(rcd.getAccount()>0){
            
                output.format("%d %s %s %.2f\n",rcd.getAccount(),rcd.getFirstName(),rcd.getLastName()
                        ,rcd.getBalance());
            }
            else{
            
                System.out.printf("\n Invalid input. Try again");
                input.nextLine();
                
            }
        }
        
        catch(Exception X){
        System.out.printf("\n Invalid data\n");
        input.nextLine();
       System.out.printf("Enter account no>0,firstname,lastName, and balace\n");
        
        }
        
        }
        
        
        
    }
    
     public void CloseFile()
    {if (output !=null)
        output.close();
    
    }
    
}

package createtextfiletest;

public class CreateTextFileTest {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        CreateTextFile app =new CreateTextFile();
        app.OpenFile();
        app.AddRecord();
        app.CloseFile();
        
    }
}

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