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package midterm2;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class midterm2task1 {

    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.setSize(300, 200); //
        GridLayout grid = new GridLayout(3, 4);
        frame.setLayout(grid);
        JButton b1 = new JButton("0");
        int a = Integer.parseInt(b1.getLabel());
        JButton[] array1 = new JButton[12];
        for(int i = 0; i<12; i++) {
            array1[i] = new JButton();
            a++;
            array1[i].setLabel(""+a);
            frame.add(array1[i]);
        }
        int b = Integer.parseInt(b1.getLabel());
        for(int i=0;i<12;i++) { 
            array1[i].addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    for (int j = 0; j < 12; j++) { 
                            array1[j].setLabel("1");
                            frame.add(array1[j]);
                    }
                }

            });
            
           
        }
        
       
        
        frame.setVisible(true);
    }

}