Wont show or find image

Example:

File imageCheck = new File("picture.gif");
    if(imageCheck.exists()) 
        System.out.println("Image file found!");
    else 
        System.out.println("Ima开发者_开发问答ge file not found!");

Image is in source directory and it wont show it on a button or on a label. I am working in Eclipse.

It should be in the project directory, not the source directory.