Read image file from same package

Question

I want to read a bunch of image files from my current package because I want to get access to the files when my package which includes my image files is exported to others' computer.

I just want to make sure my program can read the images no matter if the package is in my computer.

I tried

  File file = new File("images.jpg"); // It is wrong because the path is wrong.
  // I want to assign the image as BuffuredImage      
  BufferedImage dealerCardImage1 = ImageIO.read(file);

I was wondering how the path of the files should be. What should I do?

Make sure your build process is actually putting the image resource in the same package as your class in the classpath. — Sotirios Delimanolis, Dec 15 '13 at 04:14
Please show us the content of your Jar file as an edit to your question as this will help us to better understand exactly what you're working with and what you might be doing wrong. You can do this as per [this tutorial](http://docs.oracle.com/javase/tutorial/deployment/jar/view.html). — Hovercraft Full Of Eels, Dec 15 '13 at 04:26
It's clear that you're now dealing with files when you should have stuck with resources. — Hovercraft Full Of Eels, Dec 15 '13 at 08:24

score 1 · Answer 1 · answered Dec 15 '13 at 06:01

put your image file inside the package of current class file and try this:

BufferedImage dealerCardImage1 = ImageIO.read(getClass().getResourceAsStream("images.jpg"));

Note that, getClass().getResourceAsStream(path) returns an InputStream that points to a path that starts from current package.

For example if you have a class file named HelloWorld inside package com.example, then HelloWorld.class.getResourceAsStream("images.jpg") returns an InputStream to image with this path: com/example/images.jpg

+1 for being 'the voice of reason amongst the screaming insanity'.. — Andrew Thompson, Dec 15 '13 at 20:00

Nambi · Answer 2 · 2013-12-15T04:24:59.690

if you read from file use

    Image image = new Image();

            image = ImageIO.read(file);

            // Read from an input stream
            InputStream is = getClass()
.getResourceAsStream("/com/statement/SamplePDFStatementFile.txt");
            image = ImageIO.read(is);

//if you read from url

// Read from a URL
    URL url = new URL("http://hostname.com/image.gif");
    image = ImageIO.read(url);

score -1 · Answer 3 · answered Dec 15 '13 at 04:18

-1

ImageIO.read(file); will return null if no registered ImageReader is not found.

Please check whether you have registered any ImageReader or not.

I think this code snippet could help you

File file = new File("images.jpg"); // Assuming images.jpg in my working directory  
FileInputStream fis = new FileInputStream(file);  
BufferedImage image = ImageIO.read(fis); //reading the image file

You just need to wrap the file into an FileInputStream and then pass it to read()

answered Dec 15 '13 at 04:18

Sasi Kathimanda

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It's a jpg -- why would there not be an image reader for it? And why suggest he read the image as a File when it is in fact a resource? – Hovercraft Full Of Eels Dec 15 '13 at 04:28
OP mentioned about NPE - so i am trying to say the causes that might lead to it. OP also want to read a FILE to BI , so i just thought of having other simpler alternatives rather using streams. – Sasi Kathimanda Dec 15 '13 at 04:56

Read image file from same package

3 Answers3