Getting text file data to show in code.

[Shaylen Patel]

Here is my code so far,i have created a "birthdays.text" file with various peoples birthdays. How do I implement that into my code?
Thank your for any help.

import java.io.File;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Scanner;

public class BirthdayBinarySearchTree {
  private BSTnode root;

  public static void main(String[] args) throws Exception {
    BirthdayBinarySearchTree tree = new BirthdayBinarySearchTree();

    if (args.length > 0) {
      Scanner scanner = new Scanner(new File(args[0]));
      String line;
      while (scanner.hasNextLine()) {
        line = scanner.nextLine();

        String[] parts = line.split(" ", 3);
        if (3 == parts.length) {
          tree.add(parts[2], Integer.valueOf(parts[0]), Integer.valueOf(parts[1]));
        }
      }
    } else {
      tree.add("Test 3,3", 3, 3);
      tree.add("Test 1,1 (1)", 1, 1);
      tree.add("Test 1,1 (2)", 1, 1);
      tree.add("Test 2,2", 2, 2);
      tree.add("Test 4,4", 4, 4);

      if (null != tree.get(5, 5)) {
        System.out.println("Error");
      }

      System.out.println("Jan, 1 birthdays");

      ArrayList<String> names = tree.get(1, 1);
      if (null == names) {
        System.out.println("Error");
      } else {
        for (String name : names) {
          System.out.println(" - " + name);
        }
      }
      System.out.println();
    }

    System.out.println("List all");
    tree.listAll();
    System.out.println();

    System.out.println("List range");
    tree.listRange(2, 2, 4, 4);
  }

  public void add(String name, int birthMonth, int birthDay) {
    root = addHelper(root, name, new Birthday(birthMonth, birthDay));
  }

  private BSTnode addHelper(BSTnode node, String name, Birthday birthday) {
    if (null == node) {
      return new BSTnode(name, birthday);
    }

    int compareTo = birthday.compareTo(node.getBirthday());

    if (compareTo > 0) {
      node.right = addHelper(node.getRight(), name, birthday);
    } else if (compareTo < 0) {
      node.left = addHelper(node.getLeft(), name, birthday);
    } else {
      node.getNames().add(name);
    }

    return node;
  }

  public void listAll() {
    listHelper(iteratorInOrder());
  }

  private void listHelper(Iterator<BSTnode> iterator) {
    while (iterator.hasNext()) {
      BSTnode node = iterator.next();
      StringBuilder sb = new StringBuilder();
      sb.append(node.getBirthday()).append("\n");

      for (String name : node.getNames()) {
        sb.append(" - ").append(name).append("\n");
      }

      System.out.print(sb);
    }
  }

  public ArrayList<String> get(int birthdayMonth, int birthDay) {
    Birthday birthday = new Birthday(birthdayMonth, birthDay);
    BSTnode node = root;

    while (null != node) {
      int compareTo = birthday.compareTo(node.getBirthday());

      if (compareTo > 0) {
        node = node.getRight();
      } else if (compareTo < 0) {
        node = node.getLeft();
      } else {
        return node.getNames();
      }
    }

    return null;
  }

  public void listRange(int startMonth, int startDay, int endMonth, int endDay) {
    List<BSTnode> list = new LinkedList<BSTnode>();
    rangeIterateHelper(root, list, new Birthday(startMonth, startDay), new Birthday(endMonth, endDay));
    listHelper(list.iterator());
  }

  private void rangeIterateHelper(BSTnode node, List<BSTnode> list, Birthday min, Birthday max) {
    if (node == null) {
      return;
    }

    int minCompareTo = min.compareTo(node.getBirthday());
    int maxCompareTo = max.compareTo(node.getBirthday());

    if (minCompareTo < 0) {
      rangeIterateHelper(node.getLeft(), list, min, max);
    }

    if ((minCompareTo <= 0) && (maxCompareTo >= 0)) {
      list.add(node);
    }

    if (maxCompareTo > 0) {
      rangeIterateHelper(node.getRight(), list, min, max);
    }
  }

  public Iterator<BSTnode> iteratorInOrder() {
    List<BSTnode> list = new LinkedList<BSTnode>();
    iterateHelper(list, root);
    return list.iterator();
  }

  private void iterateHelper(List<BSTnode> list, BSTnode node) {
    if (null != node) {
      iterateHelper(list, node.getLeft());
      list.add(node);
      iterateHelper(list, node.getRight());
    }
  }

  private static class BSTnode {
    private Birthday birthday;
    private ArrayList<String> names = new ArrayList<String>();

    private BSTnode left;
    private BSTnode right;

    private BSTnode(String name, Birthday birthday) {
      this.birthday = birthday;
      this.names.add(name);
    }

    private Birthday getBirthday() {
      return birthday;
    }

    private ArrayList<String> getNames() {
      return names;
    }

    private BSTnode getLeft() {
      return left;
    }

    private BSTnode getRight() {
      return right;
    }
  }

  private static class Birthday implements Comparable<Birthday> {
    private int month;
    private int day;

    private Birthday(int month, int day) {
      this.month = month;
      this.day = day;
    }

    @Override
    public int compareTo(Birthday that) {
      if (this.month < that.month) {
        return -1;
      }

      if (this.month > that.month) {
        return 1;
      }

      if (this.day < that.day) {
        return -1;
      }

      if (this.day > that.day) {
        return 1;
      }

      return 0;
    }

    @Override
    public String toString() {
      return "month=" + month + ", day=" + day;
    }

    private int getMonth() {
      return month;
    }

    private void setMonth(int month) {
      this.month = month;
    }

    private int getDay() {
      return day;
    }

    private void setDay(int day) {
      this.day = day;
    }
  }
}

[Joanne Neal]

Shaylen Patel wrote:How do I implement that into my code?

Maybe somebody else will, but I have no idea what you mean by that.
I thought you might have meant you want to read the contents of the file, but you already appear to be doing that, so presumably you meant something else.
Can you try rephrasing your question ?

[Shaylen Patel]

How do i get the names/birthday in the text file, to print on the console

[Joanne Neal]

Shaylen Patel wrote:How do i get the names/birthday in the text file, to print on the console

Do you want to do this before you add them to the tree or do you want to traverse the tree after you've populated it ?

[Shaylen Patel]

Traverse the tree. So when 2 birthdays with the same day it will list all of them In order from Jan 1 to Dec 31

[Joanne Neal]

So what problems are you having ?
Assuming you've implemented your tree and iterator correctly, you just need to get an Iterator from the iteratorInOrder method, retrieve each element in turn and print out all the elements of each node.