ADDITIONAL SYSTEM INFORMATION :
Microsoft Windows [Version 6.1.7601]

>java -version
java version "11" 2018-09-25
Java(TM) SE Runtime Environment 18.9 (build 11+28)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11+28, mixed mode)

A DESCRIPTION OF THE PROBLEM :
BufferedImages of TYPE_INT_ARGB can't be saved as jpg with ImageIO.

REGRESSION : Last worked in version 10.0.2

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
run the code

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
com.sun.imageio.plugins.jpeg.JPEGImageWriter@464bee09
result: true
ACTUAL -
com.sun.imageio.plugins.jpeg.JPEGImageWriter@464bee09
result: false

---------- BEGIN SOURCE ----------
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import javax.imageio.ImageIO;


public class jdk11test
{
    public static void main(String[] args) throws IOException
    {
        System.out.println(ImageIO.getImageWritersByFormatName("jpg").next());
        BufferedImage bim = new BufferedImage(10, 10, BufferedImage.TYPE_INT_ARGB);
        boolean res = ImageIO.write(bim, "jpg", new ByteArrayOutputStream());
        System.out.println("result: " + res);
    }
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
use jdk10 or earlier; or use TYPE_INT_RGB; or save as png instead of jpg.

FREQUENCY : always