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Thank you very much
array[ ][ ] is work and the frame is appear , now I have to complete my code then data [ ] [ ] will work

thanks for this information.

I read
Problem description: Forgetting to initialize a variable
Problem description: Array Indices/Off by 1 errors

but my problem is how can I initialize the...

no it doesn't compile

Exception in thread "main" java.lang.NullPointerException
at Projct.<init>(Projct.java:20)
at Projct.main(Projct.java:52)
Java Result: 1
BUILD SUCCESSFUL...

I have a problem in this code.I can't display the array of Text Field.


import javax.swing.*;
import java.awt.*;

public class Projct extends JFrame {
int x=3;

public Projct(){