如何使用Java显示我的图片？

Question

Well basically my image will not display, i'm almost certain it's my file path (‪" C:\\Users\\Alex\\Desktop\\card.png" is what the image properties say is the file path but unless i put double slashes it confuses them for escape sequences. ) If someone has the answer it will be much appreciated. Here's my code:

import java.awt.*;
import javax.swing.*;
public class IDK extends JFrame {



public static void main(String args[]) {

    new IDK();


}

public IDK(){

        notsure();

        }
public void notsure(){


    setBounds(420,100,440,400);
    setTitle("Frame");
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JPanel panel = new JPanel();
    JLabel label1 = new JLabel("Tell me something");
    JLabel image = new JLabel();
    label1.setText("New Text");
    JTextField text = new JTextField("Insert text",30);
    image.setIcon(new ImageIcon("C:\\Users\\Alex\\Desktop\\card.jpg"));
    panel.add(label1,image);
    panel.add(text);
    add(panel);
    validate();
    panel.setBackground(Color.CYAN); 
    setVisible(true);

}

}

Answer 1

There is no problem with using "\\" so long as it's escaped, as you have done, if your prefer you can use / instead and on Windows the JRE will correct for it.

How ever, you should be adding the image separately, for example...

image.setIcon(new ImageIcon("C:\\Users\\Alex\\Desktop\\card.jpg"));
panel.add(label1);
panel.add(image);

The way you are doing it now assumes that image is a layout constraint for label1 , which it isn't.

You should try and avoid using absolute paths and learn to use relative paths and/or embed the resources within the application context, this makes it easier to locate these resources at runtime.

Answer 2

Create a folder in your project and call it ie 'resources' and put your image in that folder. This will ensure that given image is on your classpath and can be easily accessed.

Then you can just do :

new ImageIcon("resources/card.jgp")

Problem with accessing outside resources is that special characters needs to be escaped and also if you export the project and give it to someone else, he/she will not have the image required by software ;)