url validator

v//import java.util.Math;
import java.net.*;
import java.io.*;

public class GoogleURL{
  public  static char[] chars = {'0','1','2','3','4','5','6','7','8','9',
  'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z',
  'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
  '_'};
  public static char[] letters = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z',
  'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z',};
  public static char[] sChars = {'-'};
  public static String url_base = "https://lh3.googleusercontent.com/";
  //this is narrowed down to 3 random letters to save on time as it always appears to have 8 'A' chars
  public static String counter = "AAAAAAAA";
  public static String end = "CLABGAYYCw/";
  public static String temp;

  public static int rand(int min, int max){
    return (int)(Math.random() * max + min);
  }

  public static String build(boolean debug){
    temp = "";
    temp += url_base;
    temp += '-';
    for(int i = 0;i<11;i++){
      temp += chars[rand(0,62)];
    }
    temp += '/';
    for(int i = 0;i<11;i++){
      temp += chars[rand(0,63)];
    }
    temp += '/';
    temp += counter;
    for(int i = 0;i<3;i++){
      temp += letters[rand(0,52)];
    }
    temp += '/';
    for(int i = 0;i<33;i++){
      temp += chars[rand(0,63)];
    }
    temp += end;
    if(debug){
      System.out.println(temp);
    }
    return temp;
  }

  public static int getResponseCode(String str){
    try{
      URL u = new URL (str);
      HttpURLConnection huc =  ( HttpURLConnection )  u.openConnection ();
      huc.setRequestMethod ("GET");  //OR  huc.setRequestMethod ("HEAD");
      huc.connect () ;
      int code = huc.getResponseCode() ;
      return code;
    }catch(Exception e){
      System.out.println(e);
      return -1;
    }
  }

  public static void main(String[] args){
    while(1!=2){
      String str = build(false);
      int test = getResponseCode(str);
      if(test == 200){
        System.out.println(str);
        return;
      }
    }
  }
}