Need help debugging a parallel arrays program.

[Digit348]

package Arrays;

import java.applet.Applet;
import java.awt.Button;
import java.awt.Graphics;
import java.awt.Label;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;

public class Spanish_English_dictonary extends Applet implements ActionListener {
	
	private Button En2Sp, Sp2En, Add;
	public boolean clickedEn, clickedSp;
	private ArrayList EnDictonary = new ArrayList();
	private ArrayList SpDictonary = new ArrayList();
	public int PlaceEn, PlaceSp;
	TextField EN,SP;
	
   /**
	 * 
	 **/
	private static final long serialVersionUID = 1L;
	
	public void init(){
		this.setSize (500,420);
		
		EN = new TextField(25);
		add(EN);
		EN.addActionListener(this);
		
		SP = new TextField(25);
		add(SP);
		SP.addActionListener(this);
		
		En2Sp = new Button("English To Spanish:");
		add(En2Sp);
		En2Sp.addActionListener(this);
		
		Add = new Button("Add the word to the Dictonary:");
		add(Add);
		Add.addActionListener(this);
		
		Sp2En = new Button("Spanish To English:");
		add(Sp2En);
		Sp2En.addActionListener(this);
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		if(e.getSource() == En2Sp){
			clickedEn = true;
			String str = getWord(EN);
			PlaceEn = SearchItem(EnDictonary, str);
		}
		
		if(e.getSource() == Sp2En){
			clickedSp = true;
			String str = getWord(SP);
			PlaceSp = SpDictonary.indexOf(str);
		}
		repaint();
	}
	
	public void paint(Graphics g){
		if(EnDictonary.size() == 0){
			EnDictonary.add("House");
			EnDictonary.add("Dog");
			EnDictonary.add("Hello");
			
			SpDictonary.add("Casa");
			SpDictonary.add("Perro");
			SpDictonary.add("Hola");
		}
		
		displayArrayList(g,EnDictonary, 150);
		displayArrayList(g,SpDictonary, 160);
	}
	
	public void addWord(){
		String e ="",s = "";
		
		e= getWord(EN);
		s= getWord(SP);
		
		
	}
	
	public String getWord(TextField t){
        String thisWord=" ";
        thisWord = t.getText();
       return thisWord;
  }
	
	public int SearchItem(ArrayList s, String str){
       return s.indexOf(str); 
 }
	
	 public void displayArrayList(Graphics g, ArrayList s, int n){
         g.drawString("The words in the dictonary are: " + s, 50, n);
     }
}

I am trying to make an applet that uses Parallel arrays to act as a English to Spanish dictionary. I have the above coding which compiles and runs with no errors but i cannot Figure out how to get the translated word to display in its Text-Field. Any and all help is greatly appreciated.

[Norm]

Try debugging the code by adding println statements to show execution flow.

In the actionPerformed method, chain the if statements by using if and else if AND add a trailing else to show when none of the above if statements were true.

Where in your listener code do you put anything into a text field?

A suggestion for use while testing - preload a text field:


EN = new TextField("Dog", 25); // Pre load for testing <<<<<<<<<

[Digit348]

Thanks for the reply, I am currently going through with some prints checking the the various items in the coding.

[keang]

Parallel arrays are tricky to keep in sync and if you have a large dictionary will be inefficient to search. You would be much better off using a HashMap (or two if you need efficient translation in both directions).

[Digit348]

Thanks for the helps guys, i got the WordAdding up and working, and im currently finishing up the Actual searching of the arraylists.