Convert PNG to JPG in Java

Convert PNG to JPEG in Java

This example shows how to convert a PNG to JPG or JPEG in Java.

Program for converting a PNG Image to JPEG file format.

import java.awt.Color;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;

public class ConvertImageFile {

    public static void main(String[] args) {

        BufferedImage bufferedImage;

        try {

            //read image file
            bufferedImage = ImageIO.read(new File("c:\\javanullpointer.png"));

            // create a blank, RGB, same width and height, and a white background
            BufferedImage newBufferedImage = new BufferedImage(bufferedImage.getWidth(),
                bufferedImage.getHeight(), BufferedImage.TYPE_INT_RGB);
            newBufferedImage.createGraphics().drawImage(bufferedImage, 0, 0, Color.WHITE, null);

            // write to jpeg file
            ImageIO.write(newBufferedImage, "jpg", new File("c:\\javanullpointer.jpg"));

            System.out.println("Done");

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

}

import java.awt.Color;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import javax.imageio.ImageIO;

public class ConvertImageFile {

public static void main(String[] args) {

BufferedImage bufferedImage;

try {

//read image file

bufferedImage = ImageIO.read(new File("c:\\javanullpointer.png"));

// create a blank, RGB, same width and height, and a white background

BufferedImage newBufferedImage = new BufferedImage(bufferedImage.getWidth(),

bufferedImage.getHeight(), BufferedImage.TYPE_INT_RGB);

newBufferedImage.createGraphics().drawImage(bufferedImage, 0, 0, Color.WHITE, null);

// write to jpeg file

ImageIO.write(newBufferedImage, "jpg", new File("c:\\javanullpointer.jpg"));

System.out.println("Done");

} catch (IOException e) {

e.printStackTrace();

}

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