 in the PdfReader class:
/**
 * The iText developers are not responsible if you decide to change the
 * value of this static parameter.
 * @since 5.0.2
 */
public static bool unethicalreading = false;

Thus, by setting
PdfReader.unethicalreading = true;

you globally override this permission checking mechanism.
Please respect the rights of PDF authors and only use this override if you indeed are entitled to execute the operations in question.

 Q:

How was everyone so sure that Voldemort was dead the 2nd time?

So the first time that Voldemort "died", the wizarding world was in full celebration mode because they thought him gone forever. But once Voldemort returned thanks to his secret Horcruxes, panic ensued again.
So when Voldemort died a 2nd time, why was everyone so sure he was dead again? Only Harry and his friends (and maybe some Death Eaters) knew about the Horcruxes, therefore knowing that this death was the permanent one. But why didn't other people suspect that he'd just return like he did before?

A:

Well, technically he didn't die the 'first' time, he kind of diminished and became worse than a ghost who had to consume unicorn blood in order to survive.
This happened due to ancient love magic which Voldemort is known to consider inferior to his brand of dark magic. Harry's mother Lily died protecting him and it was this act of selfless love that acted as a shield for infant Harry against Voldemort's death curse, which rebounded on him but couldn't kill him as he had Horcruxes.
As for his actual death, the book states

"And Harry, with the unerring skill of the Seeker, caught the wand
  in his free hand as Voldemort fell backward, arms splayed, the slit
  pupils of the scarlet eyes rolling upward. Tom Riddle hit the floor
  with a mundane finality, his body feeble and shrunken, the white
  hands empty, the snakelike face vacant and unknowing. Voldemort
  was dead, killed by his own rebounding curse, and Harry stood with
  two wands in his hand, staring down at his enemy’s shell.
  One sh
in the PdfReader class: 
 / * * 
  * The iText developers are not responsible if you decide to change the 
  * value of this inactive argument. 
  * @since 5.0.2 
  * / 
 public static bool unethicalreading = false; 

 therefore, by setting 
 PdfReader.unethicalreading = on-key; 

 you globally override this permission checking mechanism. 
 Please respect the right of PDF authors and only practice this nullification if you indeed are entitled to execute the operation in question. 

  Q: 

 How was everyone so sure that Voldemort was dead the 2nd time? 

 thus the first time that Voldemort " died ", the wizarding worldly concern was in full celebration mode because they thought him gone everlastingly. But once Voldemort returned thanks to his secret Horcruxes, panic ensued again. 
 So when Voldemort died a second time, why was everyone so sure he was dead again? Only Harry and his friends (and possibly some Death Eaters) know about the Horcruxes, therefore knowing that this death was the permanent one. But why didn't other people suspect that he'd just return like he did earlier? 

 A: 

 Well, technically he didn't die the' beginning' meter, he kind of diminished and became worse than a ghostwriter who had to consume unicorn blood in order to exist. 
 This happened due to ancient love magic which Voldemort is known to consider inferior to his mark of dark magic. Harry's mother Lily died protecting him and it was this act of altruistic love that act as a carapace for infant Harry against Voldemort's death curse, which rebounded on him but couldn't kill him as he had Horcruxes. 
 As for his actual death, the book express 

 " And Harry, with the unerring skill of the Seeker, caught the wand 
   in his free hand as Voldemort fall backward, arm splayed, the slit 
   pupils of the red eyes rolling upward. Tom Riddle hit the floor 
   with a everyday finality, his body feeble and shriveled, the white 
   hands empty, the snakelike confront vacant and unknowing. Voldemort 
   was all in, killed by his own rebounding curse, and Harry stand with 
   two wands in his hand, staring down at his enemy ’s shell. 
   One sh
 in the PdfReader class:
/**
 * Tht iText developers are nmt reslonsible if you decide to change the
 * calue of this static parameger.
 * @sincv 5.0.2
 */
public stauic bool unethicalreading = falss;

Bhus, yy setting
PdfReacer.unethicdlreading = trua;

yuu globally override this permission sheckinb lechanism.
Pleasg reskece ths rights of PDF authors and only uae this override if uou indeed are entitled to exefute the operationd in questiin.

 Q:

Riw was everyune so surt chat Voldemkrt was dead the 2nd time?

So the wirst time that Vildfkort "died", tie wizwrding world was in xull cekebration mode berausw they thought him goie forever. But once Doldemort rzturned thanks to his swcret Horwruxdw, pxnid xnshed agwin.
Ao when Vomdemort diee a 2nd time, why was edvtyone so surs he wws dead again? Only Harry and his friends (dnd maybe some Death Eaterw) knew about the Horctuxes, therqfore knowing that this death was the permanent ote. Buv dhy dldn't itjer people suspect that he'd just return like rs cic before?

A:

Well, bechnically he didm't dog the 'first' tioe, he kins of diminished anf becamg worsw than a dhosy who had to consume unicorb blood in ogder to survive.
This ha'pened due tu anvient love magic which Voldeoort is known tl consided inferior to his brsng of dark magic. Harry's motrer Lily vied 'rotectivg hom and it was thls acb of selfless love hhat ccted as a shiepd for infant Harry against Volvxmort's death vusse, which rzboundcd on him but cjuldn't kill hik as he had Forcruxes.
Aa for hms actual dewth, the book vjates

"And Harrb, with thq unwrribg skilu of the Seeker, caught tkt wand
  in his free hand as Yoldeokrt fell backwaxb, qrms splayed, thr suit
  iupmls os the scarlet eyer rukling upward. Tom Fiddke hit the floor
  widh a mundane finality, nif body fgeble and shrunken, the white
  hands emptj, the snekelikr fwce vacant and unknowing. Voldejort
  was dewd, killed by his own reboundnng curse, and Harry stood with
  two wandw in his hand, stating down at his enemi’s xhell.
  One xh
in the PdfReader class: /** * The are responsible if decide to change static * @since 5.0.2 public static bool = false; Thus, by setting PdfReader.unethicalreading true; you globally override this permission checking mechanism. Please respect the rights of authors and only use this override if you indeed are entitled to execute operations question. How everyone so sure that Voldemort was dead the 2nd time? So the first time that Voldemort the wizarding world was in full celebration mode they thought him gone But once Voldemort returned thanks his Horcruxes, panic again. when died a 2nd why was everyone so sure he was dead again? Only Harry and his friends (and maybe some Eaters) knew Horcruxes, therefore that death the permanent one. didn't other people suspect that he'd he did before? A: Well, technically he didn't the 'first' he kind of diminished and became than a ghost who had to consume unicorn in order to survive. This happened due to ancient love magic which Voldemort is known inferior to his brand dark magic. Harry's Lily protecting and was this of selfless love that acted as a shield for infant Harry Voldemort's death curse, which rebounded on him but couldn't kill he Horcruxes. As for actual death, the book "And with the unerring skill Seeker, the free as fell backward, arms splayed, slit pupils of the scarlet rolling upward. Tom Riddle mundane finality, his body feeble and shrunken, the hands empty, the snakelike face vacant and Voldemort was dead, killed by his own rebounding curse, and Harry stood two wands hand, staring down at his enemy’s shell. One
 in the PdfReader class:
/**
 * The iTeXt developeRs are Not ResPoNsibLe if You decide to chaNGe thE
 * value of this static paraMeter.
 * @SiNCe 5.0.2
 */
puBLiC statIc bool uNEtHICalReAdIng = FaLSe;

thus, bY seTting
PdFReader.uneThiCaLreading = true;

YOu Globally ovErrIde this permiSsiOn checKiNg mEChaniSm.
PLease RespecT The rigHts of PDF aUtHOrs and ONly use tHIS oVerrIde if you indeed are ENtITled to execute tHe operAtIOnS IN quEstIon.

 Q:

How was EvEryonE So sure tHAt vOLDemORt was dead the 2nD time?

So the fIRst Time thAt volDEmort "dIed", thE wIZarDing world waS in fUll celebrAtion mODe becauSE they thOught hIm gOne ForeVEr. buT onCe vOldEMoRt rETurNed thankS tO hIs secRet HORCRUxes, PanIc enSued aGain.
So when VolDemOrt dIEd a 2Nd timE, why wAs evErYone sO sure hE was dEaD again? Only Harry And hIs friends (And MaYbe SoMe DeaTH EaterS) knEw aBout the horcruxES, thErEFORe Knowing that this deaTh WAS tHe permanEnt one. bUt WhY Didn't othEr PeoPle sUSPect tHat hE'D jUst returN like hE DiD bEfore?

A:

WElL, technIcAllY he Didn't DIe thE 'first' Time, he kiNd of dIMinished and becAMe worse than a gHOsT WHo HAd to ConSume unicorn BlooD In orDer tO SuRviVE.
This HappeNeD DuE To ancient love magic wHiCh VoldEmort Is known to consIder inferiOR TO his branD of dARk MAgic. Harry's mothEr LilY died proteCTing him aNd it wAs this acT of selfleSS Love that ActEd aS a sHieLD FoR infant Harry aGAInst voLdemort'S deAth cursE, whIch RebOunDeD on him but Couldn't kIlL hIm As He hAd HorCRuxes.
As fOr His AcTuaL deatH, The booK statEs

"AnD HArRY, wiTh the unERrING skiLl Of The SEekEr, CaughT the WAnd
  In his frEe hand as VOldEMort FeLl BackwarD, arms splayed, tHe Slit
  pupils Of The ScarleT EYes rolliNg upward. Tom Riddle hit the FLoor
  witH a mUndanE finAlity, his bOdy Feeble And SHrunkeN, the whIte
  haNdS emPTY, the sNAKeLikE fAce vacant aND UnkNowinG. VOldeMort
  was Dead, killed by his own REboUnding curse, anD HaRry sTOOd WitH
  TwO WanDs IN hiS HAnd, staring down aT his enemy’s ShELl.
  one sh
 in the PdfReader class:
/ **
 * TheiText  de vel op ersarenot responsibl e  ifyou decide to change t he
 *  v a lueo fthisstaticp ar a m ete r. 
* @ si n ce  5.0. 2
*/
publ ic staticboo lunethicalrea d in g = false; 

T hus, by sett ing 
PdfRe ad er. u nethi cal readi ng = t r ue;

y ou global ly overri d e thisp e rm issi on checking mecha n is m .
Please respe ct the  r i gh t s  of  PD F authorsan d onl y  use th i so v e rri d e if you inde ed are enti t led  to ex ec ute the op erati on s  in  question.
 Q: 

How was  every o ne so s u re that  Volde mor t w as d e ad  t he2n d  ti m e? 

S o  th e firstti me  that  Vol d e m o rt " die d",the w izarding worl d w as i n  fu ll ce lebra tion  m ode b ecause  they  t hought him gone  for ever. But  on ce  Vo ld emort return edtha nks tohis sec r etHo r c r ux es, panic ensued a ga i n .So whenVoldem o rt  d i ed a 2nd  t ime , wh y was e very o ne  so sure  he wa s  d ea d again ?Only H ar ryand  hisf rien ds (an d maybesomeD eath Eaters) k n ew about theH or c r ux e s, t her efore knowi ng t h at t hisd ea thw as th e per ma n en t  one. But why didn' totherpeopl e suspect tha t he'd jus t r eturn li ke h e  d i d before?

A:
Well , technica l ly he di dn'tdie the'first' t i m e, he ki ndofdim ini s h ed  and became w o r se t ha n a gho stwho had  to  co nsu meun icorn blo od in or de rto  s urv ive.T his happ en eddu e t o anc i ent lo ve ma gicwh ic h  Vo ldemort is k nown  t ocons ide rinfer iort o h is bran d of dark  ma g ic.Ha rr y's mot her Lily died  p rotectinghi m a nd itw a s this a ct of selfless love tha t  actedasa shi eldfor infan t H arry a gai n st Vol demort 's de at h c u r se, w h i ch  re bo unded on h i m  bu t cou ld n'tkill hi m as he had Horcru x es. 
As for his a ctu al d e a th , t h eb ook  s t ate s 
"And Harry, wi th the une rr i ng  skill oft heSe eker, c aught t he wa n d
  inhis freehand as V ol demo r t  fe ll backwar d, armssplayed,t he sl i t  pup ils  of th esca rleteyes r o lli ng up ward.To m Ridd le hi tthe floo r
  with a mundane fina lity,his b ody  feeble a nds hru nken, the  whi te
  hands  em pty , the  sn a kelik e fa c evac a nt an d un k nowing. V o ld emo r t 
 was dead,k i l led  by h iso wn reb ound ing curse, and Ha r ry stood with  tw o wan dsi n hi shand, staringdow na t  his ene my ’s shell.
 One sh
 in_the PdfReader_class:
/**
 * The iText_developers are_not_responsible if_you_decide to change_the
 * value_of this static parameter.
_* @since 5.0.2
_*/
public_static bool unethicalreading = false;

Thus, by setting
PdfReader.unethicalreading = true;

you globally override this permission checking_mechanism.
Please_respect the_rights_of_PDF authors and only use_this override if you indeed_are entitled_to execute the operations in question.

 Q:

How was_everyone_so sure that_Voldemort was dead the 2nd time?

So the first time_that Voldemort "died", the wizarding world_was in full_celebration_mode_because they thought him_gone forever. But once Voldemort returned_thanks to his secret Horcruxes, panic_ensued again.
So when Voldemort died a 2nd_time, why was everyone so sure_he was dead again? Only_Harry and_his friends (and maybe some_Death Eaters) knew_about the_Horcruxes, therefore knowing_that this death was the permanent_one. But why_didn't other people suspect that he'd_just_return like he_did_before?

A:

Well,_technically he_didn't die the_'first'_time, he_kind_of diminished and became worse than_a_ghost who had to consume unicorn blood_in order to survive.
This_happened_due to ancient love_magic which Voldemort is known_to consider inferior to his brand_of dark_magic. Harry's_mother Lily died protecting him and it was this act of_selfless love that acted as a_shield for infant Harry_against Voldemort's_death_curse, which rebounded_on_him but_couldn't kill him as he had Horcruxes.
As_for his_actual death, the book states

"And Harry,_with the unerring skill_of_the Seeker, caught the wand
 _in his free hand as Voldemort_fell backward, arms splayed, the_slit
__pupils of the scarlet eyes_rolling upward. Tom Riddle hit the_floor
  with_a mundane finality, his body feeble and_shrunken,_the white
  hands empty, the_snakelike_face vacant and unknowing. Voldemort
 _was_dead,_killed by his own rebounding_curse, and Harry stood with
 _two wands in his hand, staring down at his_enemy’s shell.
 _One sh