Batch image compression, test code

The code looks good, I like it

package com.dayu.test;

import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Date;

public  class ImgCompress {
     private Image img;
     private  int width;
     private  int height;
     // image path 
    public  static  final String READ_FILE_PATH = "C:\\Users\\Administrator\\Desktop\\sssssssss\\" ;
     // output image Path 
    public  static  final String WRITE_FILE_PATH = "C:\\Users\\Administrator\\Desktop\\sssssssss\\output" ;

    /**
     * Constructor, read file
     */
    public ImgCompress(String fileName) throws IOException {
        File file = new File(fileName); // Read in the file 
        img = ImageIO.read(file);       // Construct Image object 
        width = img.getWidth( null );     // Get the source image width 
        height = img.getHeight( null );   // get the source image length 
    }

    @SuppressWarnings("deprecation")
    public static void main(String[] args) throws Exception {
        System.out.println( "Start:" + new Date().toLocaleString());
         // The file name is renamed, I have 10 pictures here, named 1-10.jpg at a time         
        for ( int i = 1; i <= 10; i++ ) {
            String fileName=i+".jpg";
        ImgCompress imgCom = new ImgCompress(READ_FILE_PATH +fileName);
        imgCom.resizeFix(1500, 1500,fileName);
        }
        System.out.println("结束：" + new Date().toLocaleString());
    }

    /**
     * Compress by width or height
     *   @param w int max width
     * @param h int max height
     * @param fileName
     */
    public void resizeFix(int w, int h, String fileName) throws IOException {
        if (width / height > w / h) {
            resizeByWidth(w,fileName);
        } else {
            resizeByHeight(h,fileName);
        }
    }

    /**
     * Based on the width, scale the image proportionally
     *
     * @param w int new width
     * @param fileName
     */
    public void resizeByWidth(int w, String fileName) throws IOException {
        int h = (int) (height * w / width);
        resize(w, h,fileName);
    }

    /**
     * Based on height, scale the picture in equal proportion
     *
     * @param h int new height
     * @param fileName
     */
    public void resizeByHeight(int h, String fileName) throws IOException {
        int w = (int) (width * h / height);
        resize(w, h,fileName);
    }

    /**
     * Force compress/enlarge image to fixed size
     *
     * @param w int new width
     * @param h int new height
      */ 
    public  void resize( int w, int h,String fileName) throws IOException {
         // The thumbnail algorithm of SCALE_SMOOTH generates the smoothness of the thumbnail image with priority over the speed of the generated image quality comparison Good but slow 
        BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
        image.getGraphics().drawImage(img, 0, 0, w, h, null ); // draw the reduced image 
        File file= new File(WRITE_FILE_PATH);
         if (! file.exists()){
            file.mkdirs();
        }

        String newFilePath = WRITE_FILE_PATH+File.separator+fileName;
        File destFile = new File(newFilePath);
        FileOutputStream out = new FileOutputStream(destFile); // Output to file stream
         // Bmp, png, gif can be converted to jpg normally 
        JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
        encoder.encode(image); // JPEG编码
        out.close();
    }
}