How to download remote files to local directories in Java

import .*;
import ;
import ;
import ;
import ;

/**
  * @Author
  * @Date
  * @Version 1.0
  * <p>Note: Download remote files to local. Choose one of two methods.
  */
public class downloadUtil {

    /**
      * Download remote files and save them locally
      *
      * @param remoteFilePath - Remote file path
      * @param localFilePath - local file path (with file name)
      */
    public static void downloadFile1(String remoteFilePath, String localFilePath) {
        URL urlfile = null;
        HttpURLConnection httpUrl = null;
        BufferedInputStream bis = null;
        BufferedOutputStream bos = null;
        File f = new File(localFilePath);
        try {
            urlfile = new URL(remoteFilePath);
            httpUrl = (HttpURLConnection) ();
            ();
            bis = new BufferedInputStream(());
            bos = new BufferedOutputStream(new FileOutputStream(f));
            int len = 2048;
            byte[] b = new byte[len];
            while ((len = (b)) != -1) {
                (b, 0, len);
            }
            ();
            ();
            ();
        } catch (Exception e) {
            ();
        } finally {
            try {
                ();
                ();
            } catch (IOException e) {
                ();
            }
        }
    }

    /**
      * Download remote files and save them locally
      *
      * @param remoteFilePath - Remote file path
      * @param localFilePath - local file path (with file name)
      */
    public static void downloadFile2(String remoteFilePath, String localFilePath) {
        URL website = null;
        ReadableByteChannel rbc = null;
        FileOutputStream fos = null;
        try {
            website = new URL(remoteFilePath);
            rbc = (());
            fos = new FileOutputStream(localFilePath);//Local file address:            ().transferFrom(rbc, 0, Long.MAX_VALUE);
        } catch (Exception e) {
            ();
        }finally{
            if(fos!=null){
                try {
                    ();
                } catch (IOException e) {
                    ();
                }
            }
            if(rbc!=null){
                try {
                    ();
                } catch (IOException e) {
                    ();
                }
            }
        }
    }


    /**
      * A small test
      * @param args
      */
    public static void main(String[] args) {
        /*Remote file path*/
        String remoteFilePath1 = "/creative/vcg/800/new/";
        String remoteFilePath2 = "https://pic./2019/1112/";
        /*Local file path (with file name)*/
        String localFilePath1 ="E:\\LeStoreDownload\\update\\Guangzhou Tower.jpg";
        String localFilePath2 ="E:\\LeStoreDownload\\update\\Bridge.jpg";
        downloadFile1(remoteFilePath1,localFilePath1);
        downloadFile2(remoteFilePath2,localFilePath2);
    }

}