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

public class bhairetu extends JFrame{
Container con = null;
JButton[] jp = new JButton[8];

public bhairetu(String title) {
super(title);
con = this.getContentPane();
con.setLayout(new GridLayout(3,3));
for(int i=0;i<=8;i++){
jp[i] = new JButton();
con.add(jp[i]);
}
}
public static void main(String[] arg){
bhairetu hai = new bhairetu("配列テスト");
hai.setSize(350,350);
hai.setVisible(true);
hai.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}