regex - How to get youtube video id from URL with java -

i try id of youtube video url. here's example of such url:

https://www.youtube.com/watch?v=iz6ar-watyy 

how can id of video?

this video_adapter

public class videoadapter extends recyclerview.adapter<videoadapter.myviewholder> {  private list<video> videolist; private context context; string videourl; intent intent;  public class myviewholder extends recyclerview.viewholder {     public textview title;     public imageview image, videonextarrowimage;     public textview desc;     public textview videourl;      public myviewholder(view view) {         super(view);         title = (textview) view.findviewbyid(r.id.video_title);         image = (imageview) view.findviewbyid(r.id.video_imageview);         desc = (textview) view.findviewbyid(r.id.video_desc);         videourl = (textview) view.findviewbyid(r.id.video_url);         videonextarrowimage = (imageview) view.findviewbyid(r.id.video_nextarrow);         view.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view v) {                 intent = new intent(context, video_activity.class);                 context.startactivity(i);             }         });      } }   public videoadapter(list<video> videolist, context context) {     this.videolist = videolist;     this.context = context; }  @override public myviewholder oncreateviewholder(viewgroup parent, int viewtype) {     view itemview = layoutinflater.from(parent.getcontext()).inflate(r.layout.video_list_row, parent, false);     return new myviewholder(itemview); }  @override public void onbindviewholder(myviewholder holder, final int position) {     final video video = videolist.get(position);     holder.title.settext(video.gettitle());     holder.videourl.settext(video.getvideourl());     //holder.image.setimageresource(r.drawable.more_selector);     holder.desc.settext(video.getdesc());     holder.videonextarrowimage.setimageresource(r.drawable.nextbutton);     context = holder.image.getcontext();     picasso.with(context).load("http://bitstobyte.in/upload/" + video.getimage()).placeholder(r.drawable.play).error(r.drawable.startyoutubevideo).resize(50, 50).into(holder.image);      holder.title.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {              string title = video.gettitle();             string desc = video.getdesc();              string[] links = new string[]{video.getvideourl()};             string[] ids = new string[links.length];             (int = 0; < links.length; i++) {                 ids[i] = links[i].split("v=")[1];             }              intent = new intent(context, video_activity.class);             intent.putextra("video_title", title);             intent.putextra("vide_desc", desc);             intent.putextra("video_id", ids);             context.startactivity(intent);              toast.maketext(context, "you clicked " + video.gettitle(), toast.length_long).show();          }      }); }  @override public int getitemcount() {     return videolist.size(); } 

}

this video.java

public class video extends videoresponse{  public string title; public string image; public string desc; private string videourl;  public video(){  } public video(string title, string image, string desc,string videourl) {     this.title = title;     this.image = image;     this.videourl = videourl;     this.desc = desc; } public string gettitle() {     return title; }  public void settitle(string name) {     this.title = name; }  public string getimage() {     return image; }  public void setimage(string image) {     this.image = image; }  public string getdesc() {     return desc; }  public void setdesc(string desc) {     this.desc = desc; } public string getvideourl() {     return videourl; }  public void setvideourl(string videourl) {     this.videourl = videourl; } 

}

this video_activity.java

public class video_activity extends appcompatactivity implements youtubeplayer.oninitializedlistener {  textview textview1, textview2; scrollview scrollview; webview webview; videoview videoview; private mediacontroller mcontroller; private uri uriyoutube; private youtubeplayerview youtubeview; private static final int recovery_dialog_request = 1; video video; public string videourl; // google console apis developer key // replace key your's public static final string developer_key = "aizasyc0rjdlc0jkyy0z66qgonknmkoayoqpqni";  // youtube video id //public static final string youtube_video_code = "yexsciwjfte"; string[] ids;  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);      setcontentview(r.layout.activity_video_);      getsupportactionbar().settitle(html.fromhtml("<font color='#fdfafa'> video view </font>"));      final drawable uparrow = getresources().getdrawable(r.drawable.abc_ic_ab_back_mtrl_am_alpha);     getsupportactionbar().sethomeasupindicator(uparrow);     getsupportactionbar().setnavigationmode(actionbar.navigation_mode_standard);     getsupportactionbar().setdisplayhomeasupenabled(true);      youtubeplayersupportfragment frag = (youtubeplayersupportfragment) getsupportfragmentmanager().findfragmentbyid(r.id.youtube_view);     if (frag == null) {         frag = youtubeplayersupportfragment.newinstance();         getsupportfragmentmanager().begintransaction().add(r.id.youtube_view, frag).commit();     }      frag.initialize(developer_key, this);      intent intent = getintent();     if (null != intent) {         string video_title = intent.getstringextra("video_title");         string video_desc = intent.getstringextra("vide_desc");         ids = intent.getstringarrayextra("video_id");         //log.i("video_url", " " + youtube_videoplayer);          textview1 = (textview) findviewbyid(r.id.activity_video_title);         textview1.settext(video_title);          textview2 = (textview) findviewbyid(r.id.activity_video_desc);         textview2.settext(video_desc);          scrollview = (scrollview) findviewbyid(r.id.scroller_id_video);         scrollview.post(new runnable() {             @override             public void run() {                 scrollview.smoothscrollto(0, textview2.getbottom());             }         });     } }      @override     public void oninitializationfailure (youtubeplayer.provider provider,youtubeinitializationresult errorreason){          if (errorreason.isuserrecoverableerror()) {             errorreason.geterrordialog(this, recovery_dialog_request).show();         }         else         {             //string youtube_videplayer = getintent().getstringextra("video_player");             string youtube_videoplayer = string.format(getstring(r.string.error_player), errorreason.tostring());             toast.maketext(this, youtube_videoplayer, toast.length_long).show();         }      }     @override     public void oninitializationsuccess (youtubeplayer.provider provider,youtubeplayer player,boolean wasrestored){          if (!wasrestored) {             // loadvideo() auto play video             // use cuevideo() method, if don't want play automatically              //player.cuevideo(youtube_videoplayer);              player.cuevideo(string.valueof(ids));              // hiding player controls             //player.setplayerstyle(youtubeplayer.playerstyle.chromeless);         }     }     @override     protected void onactivityresult ( int requestcode, int resultcode, intent data){         if (requestcode == recovery_dialog_request) {             // retry initialization if user performed recovery action             getyoutubeplayerprovider().initialize(video_config.developer_key, this);         }     } private youtubeplayer.provider getyoutubeplayerprovider() {     return (youtubeplayerview) findviewbyid(r.id.youtube_view); }  @override public boolean onoptionsitemselected(menuitem item) {     if(item.getitemid() == android.r.id.home){         finish();         return true;     }     return super.onoptionsitemselected(item); } 

}

you can use string.split(regex)

for example:

string s = "https://www.youtube.com/watch?v=iz6ar-watyy"; string id = s.split("v=")[1];