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jason_yao
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update
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‎,/chinese/Windows/src/01-Iterator/A1/Aggregate.java‎

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public interface Aggregate {
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public abstract Iterator iterator();
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}

‎,/chinese/Windows/src/01-Iterator/A1/Book.java‎

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public class Book {
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private String name = "";
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public Book(String name) {
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this.name = name;
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}
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public String getName() {
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return name;
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}
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}

‎,/chinese/Windows/src/01-Iterator/A1/BookShelf.java‎

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import java.util.Vector;
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public class BookShelf implements Aggregate {
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private Vector books;
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public BookShelf(int initialsize) {
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this.books = new Vector(initialsize);
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}
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public Book getBookAt(int index) {
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return (Book)books.get(index);
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}
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public void appendBook(Book book) {
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books.add(book);
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}
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public int getLength() {
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return books.size();
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}
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public Iterator iterator() {
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return new BookShelfIterator(this);
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}
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}

‎,/chinese/Windows/src/01-Iterator/A1/BookShelfIterator.java‎

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public class BookShelfIterator implements Iterator {
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private BookShelf bookShelf;
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private int index;
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public BookShelfIterator(BookShelf bookShelf) {
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this.bookShelf = bookShelf;
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this.index = 0;
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}
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public boolean hasNext() {
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if (index < bookShelf.getLength()) {
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return true;
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} else {
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return false;
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}
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}
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public Object next() {
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Book book = bookShelf.getBookAt(index);
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index++;
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return book;
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}
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}

‎,/chinese/Windows/src/01-Iterator/A1/Iterator.java‎

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public interface Iterator {
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public abstract boolean hasNext();
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public abstract Object next();
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}

‎,/chinese/Windows/src/01-Iterator/A1/Main.java‎

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public class Main {
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public static void main(String[] args) {
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BookShelf bookShelf = new BookShelf(4);
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bookShelf.appendBook(new Book("Around the World in 80 Days"));
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bookShelf.appendBook(new Book("Bible"));
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bookShelf.appendBook(new Book("Cinderella"));
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bookShelf.appendBook(new Book("Daddy-Long-Legs"));
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bookShelf.appendBook(new Book("East of Eden"));
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bookShelf.appendBook(new Book("Frankenstein"));
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bookShelf.appendBook(new Book("Gulliver's Travels"));
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bookShelf.appendBook(new Book("Hamlet"));
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Iterator it = bookShelf.iterator();
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while (it.hasNext()) {
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Book book = (Book)it.next();
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System.out.println("" + book.getName());
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}
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}
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}

‎,/chinese/Windows/src/01-Iterator/Sample/Aggregate.java‎

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public interface Aggregate {
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public abstract Iterator iterator();
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}

‎,/chinese/Windows/src/01-Iterator/Sample/Book.java‎

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public class Book {
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private String name = "";
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public Book(String name) {
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this.name = name;
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}
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public String getName() {
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return name;
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}
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}

‎,/chinese/Windows/src/01-Iterator/Sample/BookShelf.java‎

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public class BookShelf implements Aggregate {
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private Book[] books;
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private int last = 0;
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public BookShelf(int maxsize) {
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this.books = new Book[maxsize];
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}
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public Book getBookAt(int index) {
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return books[index];
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}
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public void appendBook(Book book) {
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this.books[last] = book;
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last++;
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}
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public int getLength() {
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return last;
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}
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public Iterator iterator() {
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return new BookShelfIterator(this);
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}
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}

‎,/chinese/Windows/src/01-Iterator/Sample/BookShelfIterator.java‎

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public class BookShelfIterator implements Iterator {
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private BookShelf bookShelf;
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private int index;
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public BookShelfIterator(BookShelf bookShelf) {
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this.bookShelf = bookShelf;
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this.index = 0;
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}
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public boolean hasNext() {
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if (index < bookShelf.getLength()) {
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return true;
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} else {
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return false;
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}
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}
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public Object next() {
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Book book = bookShelf.getBookAt(index);
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index++;
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return book;
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}
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}

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