Confused: easy applet has a bug I cant fix

Question

//This program requires the user to guess a number between 1 and
//1000(that had been generated by random function).
//Integer.parseInt method seems to generate an exception but i
//don't get why cause everything seems fine.
//please help!
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class GuessTheNumber extends JApplet implements ActionListener {
JLabel guess;
JTextField userNoT;
JButton guessB;
int number, userNo = 0;
int tries;
boolean guessed = false;
boolean continuePlay = false;
public void init()
Container c=getContentPane();
c.setLayout(new FlowLayout());
guess = new JLabel("Guess a number between 1 and 1000");
c.add(guess);
userNoT= new JTextField(8);
c.add(userNoT);
guessB = new JButton("Guess!");
guessB.addActionListener(this);
c.add(guessB);
}//end method init
public void actionPerformed(ActionEvent e)
if (continuePlay == false)
number = 1+ (int)(Math.random()*1000);
tries=1;
else
tries++;
play();
}//end method actionPerformed
public void play()
String userNoS = userNoT.toString();
userNo = Integer.parseInt( userNoS );
if (userNo == number)
guessed = true;
else if (userNo < number)
showStatus(userNoS + " is too high. Try again!");
userNoT.setText("");
else
showStatus(userNoS + " is too low. Try again!");
userNoT.setText("");
if(guessed==true)
if (tries < 10)
showStatus(Integer.toString(userNo) + "is correct!Either you know " +
"the secret or you got lucky!");
else if (tries==10)
showStatus(Integer.toString(userNo) + "is correct!Ahah! You know " +
"the secret!");
else
showStatus(Integer.toString(userNo) + "is correct!You should be able to"+
" do better!");
userNoT.setText("");
continuePlay=false;
guessed = false;
}//if(guessed==true)
else if (continuePlay==false)
continuePlay=true;
}//end method play
}//end class

Answer 1

What exception is it throwing?Exception occurred during event dispatching:
java.lang.NumberFormatException: javax.swing.JTextField[,65,30,88x21,layout=javax.swing.plaf.basic.BasicTextUI$UpdateHandler,alignmentX=null,alignmentY=null,border=javax.swing.plaf.basic.BasicBorders$FieldBorder@46c1d4,flags=1184,maximumSize=,minimumSize=,preferredSize=,caretColor=javax.swing.plaf.ColorUIResource[r=0,g=0,b=0],disabledTextColor=javax.swing.plaf.ColorUIResource[r=0,g=132,b=255],editable=true,margin=javax.swing.plaf.InsetsUIResource[top=0,left=0,bottom=0,right=0],selectedTextColor=javax.swing.plaf.ColorUIResource[r=255,g=255,b=255],selectionColor=javax.swing.plaf.ColorUIResource[r=255,g=156,b=112],columns=8,columnWidth=11,command=,horizontalAlignment=LEADING]
     at java.lang.Integer.parseInt(Integer.java:405)....