import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Iterator;

import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;
import javax.imageio.stream.FileImageOutputStream;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.border.LineBorder;

public class ImageSpeichernClass {

    private final String inStr = "bild_orig.jpg";
    private final String outStr = "bild_save.jpg";
    private final String imgType = "jpeg";
    private final float imgQuality = 0.1f;

    public ImageSpeichernClass() {
        File file = new File(inStr);
        BufferedImage image = loadImg(file);
        if (image == null)
            return;
        initGUI(image);
        saveImg(image, new File(outStr), imgType);
    }

    private void initGUI(BufferedImage image) {
        int imageBreite = image.getWidth();
        int imageHoehe = image.getHeight();

        ImageIcon icon = new ImageIcon(image);
        JLabel label = new JLabel(icon);
        label.setBorder(new LineBorder(Color.WHITE));

        JPanel panel = new JPanel();
        panel.setLayout(new BorderLayout());
        panel.setBackground(Color.DARK_GRAY);
        panel.add(label, BorderLayout.CENTER);

        JFrame frame = new JFrame("Bild speichern");
        frame.add(panel);
        frame.setSize(imageBreite + 100, imageHoehe + 100);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }

    private BufferedImage loadImg(File file) {
        BufferedImage image = null;
        try {
            image = ImageIO.read(file);
        } catch (IOException ex) {
            ex.printStackTrace();
        }
        return image;
    }

    private void saveImg(BufferedImage image, File outFile, String imgType) {
        Iterator<ImageWriter> iter = ImageIO.getImageWritersByFormatName(imgType);
        ImageWriter writer = (ImageWriter) iter.next();
        ImageWriteParam iwp = writer.getDefaultWriteParam();
        iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
        iwp.setCompressionQuality(imgQuality);
        FileImageOutputStream output;
        try {
            output = new FileImageOutputStream(outFile);
            writer.setOutput(output);
            IIOImage img = new IIOImage((RenderedImage) image, null, null);
            writer.write(null, img, iwp);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        writer.dispose();
    }

    public static void main(String args[]) {
        SwingUtilities.invokeLater(() -> new ImageSpeichernClass());
    }
}