Showing images in a GUI

Hi there i was wondering if i could ask for some assistance.
I have written a system that will read in a file and modify its pixel content and then write the new image to file. i now want to develop a gui that will allow me to show the initial image on one panel (or internalFrame) and have another to show the new image, however i am at a complete loss as how to do this. can anyone recommend really good tutorials or code sample for me to study?
any information is greatly appreciated.

What is the graphic format of your image file ?
If compatible, you can directly use it in a JLabel like below:
JLabel imgLabel = new JLabel(new ImageIcon("yourFile.gif")); // .gif for examplethen, you just put the label into any Container.

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