BST problem

[unc123w]

The objective for my program is to read a text file, build an index tree object from the words in the file, then display the index by performing an inorder traversal of the tree. So far, I've created a bufferedreader that reads a text file then prints it to a string. How do I get it to read an actual text file, say from my C drive?

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;

import java.util.*;



class IndexTree<T extends Comparable <? super T>> extends BinarySearchTree<T> {
	
	public BinaryNode<T> left;
	public BinaryNode<T>right;
	Object value;
	
	public IndexTree() {
	
	     IndexTree tree = new IndexTree();
	
	
}
	
    private BinaryNode<T> insert( T x, BinaryNode<T> t )
    {
        if( t == null )
            return new BinaryNode<T>( x, null, null );
		
		int compareResult = x.compareTo( t.element );
			
        if( compareResult < 0 )
            t.left = insert( x, t.left );
        else if( compareResult > 0 )
            t.right = insert( x, t.right );
        else
            ;  // Duplicate; do nothing
        return t;
    }
	
	   private void printTree( BinaryNode<T> t )
	    {
	        if( t != null )
	        {
	            printTree( t.left );
	            System.out.println( t.element );
	            printTree( t.right );
	        }
	    }
	
}


class Prog4 {
	
		
		static public String getContents(File aFile) {
			StringBuilder contents = new StringBuilder();
		
	
		try{
			BufferedReader keyboard = new BufferedReader (new FileReader (aFile));
		
			try {
			
			String line = null;

		while ((line = keyboard.readLine()) != null){
			contents.append(line);
			contents.append(System.getProperty("line.separator"));

		      }
		
			}
			finally {
				keyboard.close();
			}
			
		}catch(IOException e){}
			return contents.toString();

	
		}
		
		public static void main (String[] args) {
			File testFile = new File("In this program you will develop an IndexTree class that extends the BinarySearchTree class. ");
			System.out.println("Contents of the file: " + getContents(testFile));
		}
	}

[unc123w]

I changed this line:
File testFile = new File("In this program you will develop an IndexTree class that extends the BinarySearchTree class. ");
to
File testFile = new File("testFile1.txt");

which is located in the source package of my project

[Norm]

If its solved, please mark as solved.

Look at the FileChooser class if you want the user to pick the file. Do a Search here for coding examples.

[Eranga]

I changed this line:
File testFile = new File("In this program you will develop an IndexTree class that extends the BinarySearchTree class. ");
to
File testFile = new File("testFile1.txt");

which is located in the source package of my project

Is that solve your question? If so mark it as solved.

Cases like this, it's better to use separate folder for locate files. Use absolute path to refer them. That's much clear, much better in implementation practice.