This code dose't running with me ... i input the value but no any output ... why?!

Question

import javax.swing.JOptionPane;

public class Program{

public static void main(String[] args){

JOptionPane jo = new JOptionPane();
int row = Integer.parseInt(jo.showInputDialog("inter u value"));
int coloumn = 0 , line = 0 , cnt = 1 ;

while(line <= row){
coloumn ++;
line ++;
cnt = 1 ;

while(cnt <= coloumn ){
System.out.print("*");
cnt++;
}
System.out.println();
}}}

Answer 1

You mean it doesn't run here at the code playground? Swing isn't supported here, just like any other gui framework. Try to take the input via Scanner and System.in.

Answer 2

Example for an integer input:
Scanner input = new Scanner(System.in);
int i = input.nextInt();
To use Scanner you need to import java.util.Scanner.
And then you can delete the import of JOptionPane.

Answer 3

u mean delete the import javax ....... or edit it to
import javax.System.JOptionPan