Podsumowanie wzorców projektowych GoF

DvdDetailspackage pk.dydakt.to.dp.b.gof.memento;import java.util.ArrayList;import java.util.ListIterator;//the originatorpublic class DvdDetails {private String titleName;private ArrayList stars;private char encodingRegion;public DvdDetails(String titleName,ArrayList stars,char encodingRegion) {this.setTitleName(titleName);this.setStars(stars);this.setEncodingRegion(encodingRegion);}private void setTitleName(String titleNameIn) {this.titleName = titleNameIn;}private String getTitleName() {return this.titleName;}private void setStars(ArrayList starsIn) {this.stars = starsIn;}public void addStar(String starIn) {stars.add(starIn);}private ArrayList getStars() {return this.stars;}private static String getStarsString(ArrayList starsIn) {int count = 0;StringBuffer sb = new StringBuffer();ListIterator starsIterator = starsIn.listIterator();while (starsIterator.hasNext()) {if (count++ > 0) {sb.append(", ");}sb.append((String) starsIterator.next());}return sb.toString();}private void setEncodingRegion(char encodingRegionIn) {this.encodingRegion = encodingRegionIn;}private char getEncodingRegion() {return this.encodingRegion;}public String formatDvdDetails() {return ("DVD: " + this.getTitleName() +", starring: " + getStarsString(getStars()) +", encoding region: " + this.getEncodingRegion());}//sets current state to what DvdMemento has90