CODEWITHSUNDEEP
java
Gaurav K
Gaurav K

Reputation: 2975

Saving an image to .jpg file : Java

The way I am saving a jFreeChart to a jpeg file is :

JFreeChart chart = ChartFactory.createXYLineChart(
"Hysteresis Plot", // chart title
"Pounds(lb)", // domain axis label
"Movement(inch)", // range axis label
dataset, // data
PlotOrientation.VERTICAL, // orientation
false, // include legend
true, // tooltips
false // urls
);

Then:

 image=chart.createBufferedImage( 300, 200);

The image appeas as: enter image description here

My save function is:

public static void saveToFile(BufferedImage img)
    throws FileNotFoundException, IOException
    {
        FileOutputStream fos = new FileOutputStream("D:/Sample.jpg");
        JPEGImageEncoder encoder2 =
        JPEGCodec.createJPEGEncoder(fos);
        JPEGEncodeParam param2 =
        encoder2.getDefaultJPEGEncodeParam(img);
        param2.setQuality((float) 200, true);
        encoder2.encode(img,param2);
        fos.close();
    }

I am calling it as:

try{
            saveToFile(image);
           }catch(Exception e){
           e.printStackTrace();
         }

The saved image appeas as:

enter image description here

Any suggestion, where I am wrong or how to save it the way it appears or may be I need to save as .png. Can anyone let me know how to save as .png?

Thanks

Upvotes: 1

Views: 23386

Answers (3)

a ridi
a ridi

Reputation: 135

Here is a great example on how this could be done. 

File imageFile = new File("C:\\LineChart.png");
int width = 640;
int height = 480;
try {
    ChartUtilities.saveChartAsPNG(imageFile, chart, width, height);
} catch (IOException ex) {
    System.err.println(ex);
}

Upvotes: 1

Luis Silva
Luis Silva

Reputation: 11

I would rather suggest that instead of using ImageIo.write in order to save your image, you better use the following function:

ChartUtilities.saveChartAsJPEG("name of your file", jfreechart, lenght, width);

Because then you can manage the size of the picture but also save picture without filters.

Upvotes: 1

Gaurav K
Gaurav K

Reputation: 2975

A simple Solution:

public static void saveToFile(BufferedImage img)
    throws FileNotFoundException, IOException
    {

        File outputfile = new File("D:\\Sample.png");
    ImageIO.write(img, "png", outputfile);
    }

Saved the image, the way it appears.

Upvotes: 7

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