12.7

//12.5
 
import java.awt.*;
import java.util.*;
import javax.swing.*;
import javax.swing.border.LineBorder;
 
public class Test extends JFrame
{
     
    public static void main(String[] args) {
         
        LineBorder lb = new LineBorder(Color.black,2);
        Test t1 = new Test();
        t1.setLayout(new GridLayout(3,3));
        ImageIcon j = new ImageIcon("pic/j.jpg");
        ImageIcon q = new ImageIcon("pic/q.jpg");
        t1.setSize(300,300);
        for(int i =0;i<9;i++){
    		switch((int)Math.round(Math.random()*2))
    		{
    		case 0:t1.add(new JLabel());  break;
    		case 1:t1.add(new JLabel(j)); break;
    		case 2:t1.add(new JLabel(q)); break;
    		}
    	}        
        
        t1.setDefaultCloseOperation(EXIT_ON_CLOSE);
        t1.setLocationRelativeTo(null);
        t1.setVisible(true);    	
    }
}