What can I do to declare an array of TextField?

I have an applet have a panel with GridLayout with 5 rows and 5 cols. I want to place 4 first rows with TextField using for loop but it can't initialize. What can I do?
The code is like that:

public class Puzzle extends Applet {
Panel pan;
TextField[] tf1;
TextField[] tf2;
TextField[] tf3;
TextField[] tf4;
public void init()
{
pan=new Panel();
pan1.setLayout(new GridLayout(5,5,10,10));
for(int i=0;i<5;i++)
{
tf1[i]=new TextField();
pan1.add(tf1[i]);
}
for(int i=0;i<5;i++)
{
tf2[i]=new TextField();
pan1.add(tf2[i]);
}
for(int i=0;i<5;i++)
{
tf3[i]=new TextField();
pan1.add(tf3[i]);
}
for(int i=0;i<5;i++)
{
tf4[i]=new TextField();
pan1.add(tf4[i]);
}
add(pan1);
}
}

Unless I'm drunk and am missing the obvious (which is a possibility ), the code doesn't look wrong...

Are you receiving any error messages when compiling?