Untitled

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class MyFrame extends JFrame implements ActionListener {
    JButton share;

    MyFrame() {
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // closes upon x
        this.setLayout(new BorderLayout());
        this.setSize(500, 500);

        ImageIcon background = new ImageIcon("end.png");
        JLabel label = new JLabel(); // create a label
        label.setText("Welcome your new pet"); // change to the pet
        label.setHorizontalTextPosition(JLabel.CENTER); // set text to the center of logo
        label.setFont(new Font("Comic Sans", Font.BOLD, 26));
        label.setIcon(background);
        label.setPreferredSize(new Dimension(100, 400));

        share = new JButton("See your pet!"); // share button
        share.setPreferredSize(new Dimension(100, 70));
        share.addActionListener(this); // listens for clicks

        this.add(label, BorderLayout.NORTH);
        this.add(share, BorderLayout.SOUTH);
        this.setVisible(true);
    }

    public void actionPerformed(ActionEvent e) {

    }
}