Java Reference
In-Depth Information
/ ** ListADT * /
publicinterfaceList<E>{
/ ** Removeallcontentsfromthelist,soitisonceagain
empty.Clientisresponsibleforreclaimingstorage
usedbythelistelements. * /
publicvoidclear();
/ ** Insertanelementatthecurrentlocation.Theclient
mustensurethatthelist'scapacityisnotexceeded.
@paramitemTheelementtobeinserted. * /
publicvoidinsert(Eitem);
/ ** Appendanelementattheendofthelist.Theclient
mustensurethatthelist'scapacityisnotexceeded.
@paramitemTheelementtobeappended. * /
publicvoidappend(Eitem);
/ ** Removeandreturnthecurrentelement.
@returnTheelementthatwasremoved. * /
publicEremove();
/ ** Setthecurrentpositiontothestartofthelist * /
publicvoidmoveToStart();
/ ** Setthecurrentpositiontotheendofthelist * /
publicvoidmoveToEnd();
/ ** Movethecurrentpositiononestepleft.Nochange
ifalreadyatbeginning. * /
publicvoidprev();
/ ** Movethecurrentpositiononestepright.Nochange
ifalreadyatend. * /
publicvoidnext();
/ ** @returnThenumberofelementsinthelist. * /
publicintlength();
/ ** @returnThepositionofthecurrentelement. * /
publicintcurrPos();
/ ** Setcurrentposition.
@paramposThepositiontomakecurrent. * /
publicvoidmoveToPos(intpos);
/ ** @returnThecurrentelement. * /
publicEgetValue();
}
Figure4.1 The ADT for a list.
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