JAVA help

Create a 2-player Tic Tac Toe. Match the given style and implied functionality as closely as possible. X wins

After each click, check to see if the game has ended. If X or O wins, show the appropriate message. If there's a tie, show the appropriate message. After the game ends, reset the board. The first click on a empty cell should put X on the button. The next click on an empty cell should put O on the button. Follow this pattern for the rest of the game. If the user clicks on a button that already has an X or O, do nothing.

Replace the button label text with pictures instead

this is my current code:

import javax.swing.*; import java.awt.*; import java.awt.event.*; public class TicTacToe extends JFrame implements ActionListener { JButton board[]=new JButton[9]; boolean turn=true; int boxFilled=0; public TicTacToe() { super.setTitle("Tic Tac Toe"); super.setSize(300, 300); super.setDefaultCloseOperation(EXIT_ON_CLOSE); buildPanel(); super.setVisible(true); } public void buildPanel() { GridLayout g = new GridLayout(3, 3); super.setLayout(g); for(int i=0; i

this code works however, it does not provide pictures

Can an expert help me implement .png photos into my code while replacing the button label text with pictures