Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.AlphaComposite;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;

import javax.imageio.ImageIO;

public class Main {
    public static void main(String[] args) throws Exception {
        BufferedImage originalImage = ImageIO.read(new File("test.png"));
        int type = originalImage.getType() == 0 ? BufferedImage.TYPE_INT_ARGB : originalImage.getType();

        BufferedImage resizeImageBmp = resizeImage(originalImage, type);
        ImageIO.write(resizeImageBmp, "png", new File("a.png"));

        resizeImageBmp = resizeImageWithHint(originalImage, type);
        ImageIO.write(resizeImageBmp, "png", new File("b.png"));

    }

    private static BufferedImage resizeImage(BufferedImage originalImage, int type) {
        int IMG_WIDTH = 512;
        int IMG_CLAHEIGHT = 512;
        BufferedImage resizedImage = new BufferedImage(IMG_WIDTH, IMG_CLAHEIGHT, type);
        Graphics2D g = resizedImage.createGraphics();
        g.drawImage(originalImage, 0, 0, IMG_WIDTH, IMG_CLAHEIGHT, null);
        g.dispose();
        return resizedImage;
    }

    private static BufferedImage resizeImageWithHint(BufferedImage originalImage, int type) {
        int IMG_WIDTH = 512;
        int IMG_CLAHEIGHT = 512;
        BufferedImage resizedImage = new BufferedImage(IMG_WIDTH, IMG_CLAHEIGHT, type);
        Graphics2D g = resizedImage.createGraphics();
        g.drawImage(originalImage, 0, 0, IMG_WIDTH, IMG_CLAHEIGHT, null);
        g.dispose();
        g.setComposite(AlphaComposite.Src);

        g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        return resizedImage;
    }
}