How to Convert PNG to JPEG in Java

In this example we will show how to convert PNG to JPEG image file in Java.

Source Code

package com.beginner.examples;

import java.awt.Color;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;

public class ConvertPNGToJPG {

	public static void main(String[] args) {
		
		try {
			BufferedImage bufferedImage1 = ImageIO.read(new File("E:tmptest.png"));
			BufferedImage bufferedImage2 = new BufferedImage(bufferedImage1.getWidth(),bufferedImage1.getHeight(), BufferedImage.TYPE_INT_RGB);
			bufferedImage2.createGraphics().drawImage(bufferedImage1, 0, 0, Color.WHITE, null);
			ImageIO.write(bufferedImage2, "jpg", new File("E:tmptest.jpg"));
			System.out.println("Done");
		} catch (IOException e) {
			e.printStackTrace();
		}

	}

}

References

Imported packages in Java documentation:

BufferedImage
Color
File
IOException
Image
ImageIO