CODEWITHSUNDEEP
javaimageembedded-resource
jocopa3
jocopa3

Reputation: 796

How to access an image in a different folder?

How would I access a picture in a different folder in Java? I have a series of pictures and they change based on user input, which is what x is for.

picture.setIcon(new ImageIcon("\\resources\\icons\\pictures\\"+x+".png"));

The images are located (from the .class files) in resources/icons/pictures, but the above code doesn't work. The value of x isn't the problem since it works as it should. Am I calling the pictures the right way?

Upvotes: 1

Views: 2985

Answers (3)

user unknown
user unknown

Reputation: 36269

The images are located (from the .class files) in resources/icons/pictures

That's a problem. The system isn't interested in where the class file is, but from where you invoke a program.

Specifying a resource folder via command line, 

java -jar myJar.jar C:\\home\\of\\the\\images

or via a property

java -jar myJar.jar -DImageHome=/foo/bar/images

or from a properties file is most flexible.

If you like to put the images into the jar, use Andrews suggestion, getClass ().getRessource ("...");

Btw: I know for sure, that forward slashes are portable. Backslashes, afaik, aren't.

Upvotes: 0

Andrew Thompson
Andrew Thompson

Reputation: 168845

Am I calling the pictures the right way?

Probably not. If they are (embedded) application resources they will typically be in a Jar and unavailable via the String based constructor of the ImageIcon (which expects the String equates to a File path).

For an embedded resources, access them by URL.

URL urlToImg = this.getClass().
    getResource("/resources/icons/pictures/"+x+".png");
picture.setIcon(new ImageIcon(urlToImg));

Upvotes: 2

mikera
mikera

Reputation: 106401

You should be using forward slashes instead of backslashes I believe.

new ImageIcon("/resources/icons/pictures/"+x+".png")

This is the standard Java cross-platform way of denoting resource file paths. It still works on Windows - the Java runtime library handles the transaltion for you.

Upvotes: 0

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