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I'm implementing a RNL traversal across this binary search tree

here's my pseudocode and the loop I'm trying to implement it with:

1. If there is a node to the right, push current node onto...

"run:
Exception in thread "main" java.lang.NullPointerException
at project1.ClassDataArray.readStates(Main.java:65)
at project1.Main.main(Main.java:119)
Java Result: 1
BUILD...

i feel like i already have, this time i'll include all of what i have so far, here it is:


import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

/**
*
*...

I'm using this method to read records from a file in my root project directory, storing them into an array of objects.

example of a line of text:
Texas Austin ...