import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Main extends JFrame implements ActionListener {
Image img;
JButton getPictureButton = new JButton("Get Picture");
public static void main(String[] args) {
new Main();
}
public Main() {
this.setSize(300, 300);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel picPanel = new PicturePanel();
this.add(picPanel, BorderLayout.CENTER);
JPanel buttonPanel = new JPanel();
getPictureButton.addActionListener(this);
buttonPanel.add(getPictureButton);
this.add(buttonPanel, BorderLayout.SOUTH);
this.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
String file = "a.png";
if (file != null) {
Toolkit kit = Toolkit.getDefaultToolkit();
img = kit.getImage(file);
img = img.getScaledInstance(300, -1, Image.SCALE_SMOOTH);
this.repaint();
}
}
class PicturePanel extends JPanel {
public void paint(Graphics g) {
g.drawImage(img, 0, 0, this);
}
}
}