Accessing a BinarySearchTree from a button

Question

Hello I am trying to figure out how to check to see if a certain value is in my BinarySearchTree. I get the value from a Jtextfield and then I can't access my BST from the actionlistner method. here is a snib of my code
//In with the rest of my GUI code
class ButtonHandler implements ActionListener
public void actionPerformed( ActionEvent e )
String cmd = e.getActionCommand();
String lastName;
if( cmd.equals( "Find" ) )
lastName = txtLastName.getText();
//Here I would check to see if last name was in my BST, but i can not Access it.
public static void main(String[] args)
BinarySearchTree bst = new BinarySearchTree();
File dataFile = new File("datafile.txt");
if(dataFile.exists())
loadBST(bst);
Project2 app = new Project2();
app.setVisible( true );
public static void loadBST(BinarySearchTree bst)
String fileLine;
String[] data;
Person[] people = new Person[300];
int i = 0;
try
BufferedReader br = new BufferedReader(new FileReader("datafile.txt"));
while( ( fileLine = br.readLine() ) != null)
data = fileLine.split("\t");
Person person = new Person( data[0], data[1], data[2], data[3], data[4].charAt(0), data[5]);
people += person;+
bst.add( data[0], i );
i+;+
+}+
br.close();
+}+
catch( IOException e )
+{+
System.out.println("Could not Read the data file.");
+}+
+}+
+}+
+I have a BST class with a find method that is looking for a String, but i dunno how to access it from my action listener? I have tried declaring my BST with all of my GUI declaration but then i would be tring to reference a Non-static variable in a static method. I am not sure how to do this.
Edited by: Capt. on Mar 20, 2008 4:21 AM
Edited by: Capt. on Mar 20, 2008 4:24 AM

Answer 1

Well, unfortunately I must keep my load static class. If I declare like this..
public class Project2 extends JFrame
private JTextField txtLastName, txtFirstName, txtSSN, txtPhone, txtBirthDate;
private JButton btnFind, btnAdd, btnDelete, btnExit;
private JRadioButton radMale, radFemale, radDummy;
private BinarySearchTree bst = new BinarySearchTree();
public Project2( )
setTitle( "BSTDataBase" );
setSize( 300, 300 );
setLocationRelativeTo( null );
Is there a way to access that variable anywhere since it would be a class variable now, such as in the main or action listener methods? I think I heard something about ap.tree or something like that, dont know how to use it or the proper syntax though.