Reading from a TextArea

Below is code that reads one line from a textarea. The key things are:

• the keys that i did was add a keylistener to textarea
• look at testinteraction - it calls a method (readLine - copy that),

    import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
public class FullScreen extends JApplet implements ActionListener, KeyListener
{
    JTextArea textArea;
    JButton closeButton = new JButton("X");
    String lastNewLine="";
 
    public void init()
    {
       
        Container screen = getContentPane();
        screen.setBackground(Color.green);
        screen.setLayout (new FlowLayout());
        screen.add(closeButton);
        textArea = new JTextArea(5, 30);
        

        textArea.addKeyListener(this);
       
        screen.add(textArea);
   
 
    }
    public void paint(Graphics g)
    {
        super.paint(g);
    }
 
    public void testInteraction()
    {
        textArea.append("whats your name?\n");        
         setCursorEnd();
    }
 
    public void processLine()
    {
        textArea.append("nice to meet you\n" +lastNewLine);   
         setCursorEnd();
        lastNewLine="";
    }
    
    public void setCursorEnd()
    {
        textArea.setCaretPosition(textArea.getDocument().getLength());
    }
 
    public String readLine()
    {
       
        Document document = textArea.getDocument();
        Element rootElem = document.getDefaultRootElement();
        int numLines = rootElem.getElementCount();
        Element lineElem = rootElem.getElement(numLines - 1);
        int lineStart = lineElem.getStartOffset();
        int lineEnd = lineElem.getEndOffset();
        try{           
            String lineText = document.getText(lineStart, lineEnd - lineStart);
            lineText=lineText.replace("\n","");
            return lineText;
        }
        catch (Exception e){}
        return "";
        // return textArea.getText();
    }
 
    public void actionPerformed(ActionEvent thisEvent)
    {
        Object source = thisEvent.getSource();
 
        if (source == closeButton)
        {          
            System.exit(0);
        }
 
    }
 
    int gameStatus=0;
    public void keyPressed(KeyEvent e)
    {
        char theChar=e.getKeyChar();
        int theCode=e.getKeyCode();
        if (theCode == e.VK_ENTER) {
            lastNewLine=readLine();
            processLine();
        }
    }
    //This is the method that will be called if a key is released
    //It is unneccessary to use this method, but you must include it
    public void keyReleased(KeyEvent e)
    { 
    }
 
    //This is the  method that will be called if a key is typed, however you cant use getKeyCode, so
    // you are better to use keyPressed
    public void keyTyped(KeyEvent e)
    {   
    }
   
}