URL to download network resources

package com.wuming.lesson04;

import java.net.MalformedURLException;
import java.net.URL;

public class URLDemo01 {
    public static void main(String[] args) throws MalformedURLException {
        URL url = new URL("http://localhost:8080/helloworld/index.jsp?username=wuming&password=123");
        System.out.println(url.getProtocol());// agreement 
        System.out.println(url.getHost());// host ip
        System.out.println(url.getPort());// port 
        System.out.println(url.getPath());// file 
        System.out.println(url.getFile());// The full path 
        System.out.println(url.getQuery());// Parameters 
    }
}

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package com.wuming.lesson04;

import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

public class UrlDown {
    public static void main(String[] args) throws Exception {
        //1. Download address 
        URL url = new URL("https://p2.music.126.net/xOMA-0nOKNmweJ-vcfaBMQ==/109951167290093049.jpg?param=200y200");
        //2. Connect to this resource  HTTP
        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
        InputStream inputStream = urlConnection.getInputStream();
        FileOutputStream fos = new FileOutputStream("109951167290093049.jpg");
        byte[] buffer = new byte[1024];
        int len;
        while((len=inputStream.read(buffer))!=-1){
            fos.write(buffer,0,len);// Write this data 
        }
        fos.close();
        inputStream.close();
        urlConnection.disconnect();// disconnect 
    }
}

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Download the pictures

Under the root directory path

Download Music , Play it on the player