Java for ImageProcessing

[Fred Ho]

Dear Sir/Madam,

I try to make a function for image processing using java, I have add a menu item "Add Icon" under the menu bar. The function should read a file Icon.gif and place the icon at the top left hand corner of the image.
The following code is what I tried to do ...

after checking the user whether to select 'add icon',
if (s == "Add Icon") {
mBufferedImage = processor.AddIcon(mBufferedImage);

}

then it will run the class AddIcon as below...

public BufferedImage AddIcon (BufferedImage inputImage) {
BufferedImage icon = null;
Graphics g = inputImage.getGraphics();
g.drawImage(icon, 0,0, null);
return mBufferedImage;
}

I am just a beginner for the java programming and hope that someone can teach me:
1.how to ask the user to input the second image to place at the corner and
2.how to amend the class AddIcon to make it really work.
Thanks a lot for your kindly help!

[BigDaddyLH]

Dear Sir/Madam,

I try to make a function for image processing using java, I have add a menu item "Add Icon" under the menu bar. The function should read a file Icon.gif and place the icon at the top left hand corner of the image.
The following code is what I tried to do ...

after checking the user whether to select 'add icon',
if (s == "Add Icon") {
mBufferedImage = processor.AddIcon(mBufferedImage);

}

then it will run the class AddIcon as below...

public BufferedImage AddIcon (BufferedImage inputImage) {
BufferedImage icon = null;
Graphics g = inputImage.getGraphics();
g.drawImage(icon, 0,0, null);
return mBufferedImage;
}

I am just a beginner for the java programming and hope that someone can teach me:
1.how to ask the user to input the second image to place at the corner and
2.how to amend the class AddIcon to make it really work.
Thanks a lot for your kindly help!

If you are a beginner at programming, I wouldn't suggest jumping into Swing. Learn the basics first. For example, don't use == to compare strings, use equals:

if (s.equals("Add Icon"))

I'm also wondering why your AddIcon method both takes and returns a BufferedImage -- isn;t it going to be a reference to the same object?

mBufferedImage = processor.AddIcon(mBufferedImage);

As for your questions: how to ask the user to input a file: use JFileChooser:
http://java.sun.com/docs/books/tutor...lechooser.html
You second question "how to make it work?" is too vague to answer. Please be more specific.