java - If statement trouble on static variable -

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this question has answer here:

guys i'm working on android , , have static variable , lets "var" , if it's null if statement executed or else executed , thing , after "var" not null , if restart tab works expected , enlighten me .

**protected static string ipath="" , ipath1;**    protected onclicklistener selimg = new onclicklistener() // first image {      @override     public void onclick(view vw)      {         // todo auto-generated method stub         intent = new intent(                 intent.action_pick, android.provider.mediastore.images.media.internal_content_uri);                  startactivityforresult(i, result_load_image);      }    };  protected void onactivityresult(int requestcode, int resultcode, intent data) {     super.onactivityresult(requestcode, resultcode, data);      if (requestcode == result_load_image && resultcode == result_ok && null != data) {         uri selectedimage = data.getdata();         string[] filepathcolumn = { mediastore.images.media.data };          cursor cursor = getcontentresolver().query(selectedimage,                 filepathcolumn, null, null, null);         cursor.movetofirst();          int columnindex = cursor.getcolumnindex(filepathcolumn[0]);         string picturepath = cursor.getstring(columnindex);         cursor.close();         imageview imageview = (imageview) findviewbyid(r.id.imageview1);         imageview imageview1 = (imageview) findviewbyid(r.id.imageview2);         **if(ipath == "")         {         ipath=picturepath;          imageview.setimagebitmap(bitmapfactory.decodefile(picturepath));         }         else         {             ipath1=picturepath;             imageview1.setimagebitmap(bitmapfactory.decodefile(picturepath));          }**      } }

change if(ipath == "") if(ipath.isempty()) or can change if(ipath.equals("")) , suggest reading this


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