How to display specific data from a file

Posted by user1067332 on Stack Overflow See other posts from Stack Overflow or by user1067332
Published on 2012-11-21T16:20:29Z Indexed on 2012/11/21 16:59 UTC
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My program is supposed to ask the user for firstname, lastname, and phone number till the users stops. Then when to display it asks for the first name and does a search in the text file to find all info with the same first name and display lastname and phones of the matches.

import java.util.*;
import java.io.*;
import java.util.Scanner;
public class WritePhoneList
{
public static void main(String[] args)throws IOException
{


  BufferedWriter output = new BufferedWriter(new FileWriter(new File(
                                        "PhoneFile.txt"), true));

String name, lname, age;
int pos,choice;

try
{

do
{
Scanner input = new Scanner(System.in);
System.out.print("Enter First name, last name, and phone number ");
name = input.nextLine();


output.write(name);
output.newLine();

System.out.print("Would you like to add another? yes(1)/no(2)");
choice = input.nextInt();
}while(choice == 1);
output.close();
}
catch(Exception e)
{
System.out.println("Message: " + e);
}
}
}

Here is the display code, when i search for a name, it finds a match but displays the last name and phone number of the same name 3 times, I want it to display all of the possible matches with the first name.

import java.util.*;
import java.io.*;
import java.util.Scanner;
public class DisplaySelectedNumbers
{
public static void main(String[] args)throws IOException
{

String name;
String strLine;
try
{
FileInputStream fstream = new FileInputStream("PhoneFile.txt");
        // Get the object of DataInputStream
        DataInputStream in = new DataInputStream(fstream);
        BufferedReader br = new BufferedReader(new InputStreamReader(in));
          Scanner input = new Scanner(System.in);
          System.out.print("Enter a first name");
          name = input.nextLine();

        strLine= br.readLine();
        String[] line = strLine.split(" ");
        String part1 = line[0]; 
        String part2 = line[1];
        String part3 = line[2];

        //Read File Line By Line
        while ((strLine= br.readLine()) != null)    
    {

        if(name.equals(part1)) 
        {

        // Print the content on the console
System.out.print("\n" + part2 + " " + part3);
}   
}
}catch (Exception e)
{//Catch exception if any
            System.out.println("Error: " + e.getMessage());
}

}
}

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