/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		List<String> list = new ArrayList<String>();
	    list.add("video_codigo_1");
	    list.add("video_codigo_2");
	    list.add("video_codigo_3");
	    list.add("video_codigo_4");
 
	    StringBuilder strB = new StringBuilder();
	    for(int i =0; i < list.size(); i++){
 
	    	if(i<(list.size()-1))
	    		strB.append(list.get(i)).append(",");
	    	else strB.append(list.get(i));
	    }
	    String url = "https://w...content-available-to-author-only...s.com/youtube/v3/videos?part=snippet,statistics&id="+strB.toString()+"&key={API_KEY}";
	    System.out.println(url);
	}
}

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