displaying jpg to a jPanel - eclipse

Question

So i am trying to add an image to my program after a button is pressed with a certain value entered into a text field. I want the image to be blank until the button is pressed with the correct value. The only issue i seem to be having is making the photo appear, i know the output should be working. here is the code i have for adding the label.
photo = new JLabel();
photo.setBounds(425, 170, 400, 360);
contentPane.add(photo);
ImageIcon icon = new ImageIcon("AwsomeSauce.jpg");
here is the code for when the value is entered correctly
if (error) {
photo.setIcon(image);
}
now im still pretty new at this so go easy on me.

Answer 1

Here is simple example for you:
public class Frame extends JFrame {
private JLabel label;
public Frame() {
getContentPane().add(label = new JLabel(),BorderLayout.SOUTH);
JButton b = new JButton("show Icon");
b.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent arg0) {
URL resource = getClass().getResource("/res/3_disc.png");
ImageIcon ico = new ImageIcon(resource);
label.setIcon(ico);
}
});
getContentPane().add(b,BorderLayout.NORTH);
}
public static void main(String[] args) {
Frame frame = new Frame();
frame.setTitle("This is a test");
frame.setSize(300, 300);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
"/res/3_disc.png" - is my icon which is placed in my project in res folder.