How to set the right path to image in java?

Question

I am trying to load and draw it with paint method in java whatever the way I write the path it always shows an exception

java.lang.IllegalArgumentException: input == null!
    at javax.imageio.ImageIO.read(Unknown Source)

I have the image at the same folder with the class

This is the line that I am loading image in

    Image img = ImageIO.read(getClass().getResourceAsStream("pepsi.png"));

Answer 1

Have a look at MKYong's tutorial. It shows you where to put your image. If you want the image to be loaded as "resource", you have to put it in the resources folder. You project structure would be like this:

MyProject
    +--src
        +--main
            +--java
            |    +-com
            |       +--me
            |           +--Main.java
            +--resources
                 +--pepsi.jpg

and in your Main class you execute that snippet:

try {
    Image img= ImageIO.read(Main.class.getClassLoader().getResourceAsStream("pepsi.jpg"));
    System.out.println(img.getWidth(null));  //this is just a test, when it prints out the width of your image, you have the right file loaded 
} catch (IOException ex) {
    Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}