添加注释

pattern-iterator/README.md

@@ -7,6 +7,4 @@
     1. 将遍历和实现分开，降低耦合
     2. 遍历iterator，可扩展。比如可以实现顺序遍历，又可以另外实现倒序遍历。这样的修改对实现改动小
     3. 实现的修改，对遍历影响小.
-
-
 ```

pattern-iterator/src/main/java/org/panda/iterator/Aggregate.java

@@ -2,8 +2,12 @@ package org.panda.iterator;
 
 /**
  *  集合类接口
+ * @author qi
  */
 public interface Aggregate {
-
+    /**
+     *  获取迭代器
+     * @return
+     */
     Iterator  iterator();
 }

pattern-iterator/src/main/java/org/panda/iterator/Book.java

@@ -1,7 +1,13 @@
 package org.panda.iterator;
 
+/**
+ *  书籍
+ * @author qi
+ */
 public class Book {
-
+    /**
+     * 书名称
+     */
     private String name;
 
     public Book() {

pattern-iterator/src/main/java/org/panda/iterator/BookShelf.java

@@ -3,10 +3,18 @@ package org.panda.iterator;
 import java.util.ArrayList;
 import java.util.List;
 
+/**
+ * 书的集合类-书架
+ * @author qi
+ */
 public class BookShelf implements Aggregate {
-
+    /**
+     * 书籍集合
+     */
     private List<Book>  bookList;
-
+    /**
+     * 集合索引
+     */
     private int last = 0;
 
     public BookShelf(){

pattern-iterator/src/main/java/org/panda/iterator/BookShelfIterator.java

@@ -1,9 +1,17 @@
 package org.panda.iterator;
 
+/**
+ * 书架迭代器
+ * @author qi
+ */
 public class BookShelfIterator implements Iterator {
-
+    /**
+     * 书架
+     */
     private BookShelf bookShelf;
-
+    /**
+     * 索引
+     */
     private int index;
 
     public BookShelfIterator(BookShelf bookShelf) {
@@ -11,18 +19,17 @@ public class BookShelfIterator implements Iterator {
         this.index = 0;
     }
 
+    @Override
     public boolean hashNext() {
-        if (index<bookShelf.getLength()){
-            return true;
-        }else {
-            return false;
-        }
 
+        return index<bookShelf.getLength();
     }
 
+    @Override
     public Object next() {
         Book book = bookShelf.get(index);
         index++;
         return book;
     }
+
 }

pattern-iterator/src/main/java/org/panda/iterator/Iterator.java

@@ -1,8 +1,20 @@
 package org.panda.iterator;
 
+/**
+ *  接口-迭代器
+ * @author qi
+ * @param <T>
+ */
 public interface Iterator<T> {
-
+    /**
+     * 判断是否有下一元素
+     * @return
+     */
     boolean hashNext();
 
+    /**
+     * 获取元素
+     * @return
+     */
     T next();
 }