diff --git a/group22/627559964/src/com/coding/basic/BinaryTreeNode.java b/group22/627559964/src/com/coding/basic/BinaryTreeNode.java
index 9c416d3ad3..28212adfe8 100644
--- a/group22/627559964/src/com/coding/basic/BinaryTreeNode.java
+++ b/group22/627559964/src/com/coding/basic/BinaryTreeNode.java
@@ -1,18 +1,18 @@
 package com.coding.basic;
 
 /**
- * 自定义二叉树
+ * 鑷畾涔変簩鍙夋爲
  * 
  * @author xiongrui233
  *
  */
 public class BinaryTreeNode {
 
-	//节点值
+	//鑺傜偣鍊�
 	private Object data;
-	//左子树
+	//宸﹀瓙鏍�
 	private BinaryTreeNode left;
-	//右子树
+	//鍙冲瓙鏍�
 	private BinaryTreeNode right;
 
 	public Object getData() {
@@ -40,7 +40,7 @@ public void setRight(BinaryTreeNode right) {
 	}
 
 	/**
-	 * 插入元素
+	 * 鎻掑叆鍏冪礌
 	 * @param o
 	 * @return BinaryTreeNode
 	 */
diff --git a/group22/627559964/src/com/coding/basic/Queue.java b/group22/627559964/src/com/coding/basic/Queue.java
index 965894a9ea..9ed8e0b4fa 100644
--- a/group22/627559964/src/com/coding/basic/Queue.java
+++ b/group22/627559964/src/com/coding/basic/Queue.java
@@ -1,7 +1,9 @@
 package com.coding.basic;
 
+import com.coding.basic.linklist.LinkedList;
+
 /**
- * 自定义队列
+ * 鑷畾涔夐槦鍒�
  * 
  * @author xiongrui233
  *
diff --git a/group22/627559964/src/com/coding/basic/ArrayList.java b/group22/627559964/src/com/coding/basic/array/ArrayList.java
similarity index 85%
rename from group22/627559964/src/com/coding/basic/ArrayList.java
rename to group22/627559964/src/com/coding/basic/array/ArrayList.java
index 59d055dfa7..0070419e3d 100644
--- a/group22/627559964/src/com/coding/basic/ArrayList.java
+++ b/group22/627559964/src/com/coding/basic/array/ArrayList.java
@@ -1,23 +1,26 @@
-package com.coding.basic;
+package com.coding.basic.array;
 
 import java.util.Arrays;
 
+import com.coding.basic.Iterator;
+import com.coding.basic.List;
+
 /**
- * 自定义ArrayList
+ * 鑷畾涔堿rrayList
  * 
  * @author xiongrui233
  *
  */
 public class ArrayList implements List {
 
-	// list长度
+	// list闀垮害
 	private int size = 0;
 
-	// list的元素集合
+	// list鐨勫厓绱犻泦鍚�
 	private Object[] elementData = new Object[10];
 
 	/**
-	 * 合并数组
+	 * 鍚堝苟鏁扮粍
 	 * 
 	 * @param arrays1
 	 * @param arrays2
@@ -31,7 +34,7 @@ private Object[] concat(Object[] arrays1, Object[] arrays2) {
 	}
 
 	/**
-	 * 分割数组
+	 * 鍒嗗壊鏁扮粍
 	 * 
 	 * @param arrays
 	 * @param from
@@ -47,8 +50,8 @@ private Object[] subArrays(Object[] arrays, int from, int index) {
 	}
 
 	/**
-	 * 动态增长list长度
-	 * 策略为:newSize = oldSize * 1.5
+	 * 鍔ㄦ�佸闀縧ist闀垮害
+	 * 绛栫暐涓�:newSize = oldSize * 1.5
 	 * 
 	 * @param oldSize
 	 */
@@ -57,7 +60,7 @@ private void grow(int oldSize) {
 	}
 
 	/**
-	 * 检查在插入新元素时,list长度是否足够
+	 * 妫�鏌ュ湪鎻掑叆鏂板厓绱犳椂,list闀垮害鏄惁瓒冲
 	 * 
 	 * @param newSize
 	 */
@@ -69,7 +72,7 @@ private void checkSize(int newSize) {
 	}
 
 	/**
-	 * 新增元素
+	 * 鏂板鍏冪礌
 	 * 
 	 * @param Object
 	 */
@@ -79,7 +82,7 @@ public void add(Object o) {
 	}
 
 	/**
-	 * 新增元素
+	 * 鏂板鍏冪礌
 	 * 
 	 * @param index
 	 * @param Object
@@ -96,7 +99,7 @@ public void add(int index, Object o) {
 	}
 
 	/**
-	 * 获得编号为index的元素
+	 * 鑾峰緱缂栧彿涓篿ndex鐨勫厓绱�
 	 * 
 	 * @param int
 	 * @return Object
@@ -106,7 +109,7 @@ public Object get(int index) {
 	}
 
 	/**
-	 * 删除编号为index的元素
+	 * 鍒犻櫎缂栧彿涓篿ndex鐨勫厓绱�
 	 * 
 	 * @param int
 	 * @return Object
@@ -122,7 +125,7 @@ public Object remove(int index) {
 	}
 
 	/**
-	 * 返回list长度
+	 * 杩斿洖list闀垮害
 	 * 
 	 * @return int
 	 */
@@ -131,7 +134,7 @@ public int size() {
 	}
 
 	/**
-	 * 重写迭代器
+	 * 閲嶅啓杩唬鍣�
 	 *
 	 * @return IteratorImpl
 	 */
diff --git a/group22/627559964/src/com/coderising/array/ArrayUtil.java b/group22/627559964/src/com/coding/basic/array/ArrayUtil.java
similarity index 99%
rename from group22/627559964/src/com/coderising/array/ArrayUtil.java
rename to group22/627559964/src/com/coding/basic/array/ArrayUtil.java
index e97b5f7a7c..07336908e0 100644
--- a/group22/627559964/src/com/coderising/array/ArrayUtil.java
+++ b/group22/627559964/src/com/coding/basic/array/ArrayUtil.java
@@ -1,4 +1,4 @@
-package com.coderising.array;
+package com.coding.basic.array;
 
 import java.util.ArrayList;
 import java.util.Arrays;
diff --git a/group22/627559964/src/com/coding/basic/linklist/LRUPageFrame.java b/group22/627559964/src/com/coding/basic/linklist/LRUPageFrame.java
new file mode 100644
index 0000000000..f46c602b7f
--- /dev/null
+++ b/group22/627559964/src/com/coding/basic/linklist/LRUPageFrame.java
@@ -0,0 +1,151 @@
+package com.coding.basic.linklist;
+
+public class LRUPageFrame {
+
+	private static class Node {
+
+		Node prev;
+		Node next;
+		int pageNum;
+
+		Node() {
+		}
+	}
+
+	private int capacity;
+
+	private int currentSize;
+	private Node first;// 閾捐〃澶�
+	private Node last;// 閾捐〃灏�
+
+	public LRUPageFrame(int capacity) {
+		this.currentSize = 0;
+		this.capacity = capacity;
+
+	}
+
+	/**
+	 * 鑾峰彇缂撳瓨涓璞�
+	 * 
+	 * @param key
+	 * @return
+	 */
+	public void access(int pageNum) {
+
+		Node node = find(pageNum);
+		// 鍦ㄨ闃熷垪涓瓨鍦紝 鍒欐彁鍒伴槦鍒楀ご
+		if (node != null) {
+
+			moveExistingNodeToHead(node);
+
+		} else {
+
+			node = new Node();
+			node.pageNum = pageNum;
+
+			// 缂撳瓨瀹瑰櫒鏄惁宸茬粡瓒呰繃澶у皬.
+			if (currentSize >= capacity) {
+				removeLast();
+
+			}
+
+			addNewNodetoHead(node);
+
+		}
+	}
+
+	private void addNewNodetoHead(Node node) {
+
+		if (isEmpty()) {
+
+			node.prev = null;
+			node.next = null;
+			first = node;
+			last = node;
+
+		} else {
+			node.prev = null;
+			node.next = first;
+			first.prev = node;
+			first = node;
+		}
+		this.currentSize++;
+	}
+
+	private Node find(int data) {
+
+		Node node = first;
+		while (node != null) {
+			if (node.pageNum == data) {
+				return node;
+			}
+			node = node.next;
+		}
+		return null;
+
+	}
+
+	/**
+	 * 鍒犻櫎閾捐〃灏鹃儴鑺傜偣 琛ㄧず 鍒犻櫎鏈�灏戜娇鐢ㄧ殑缂撳瓨瀵硅薄
+	 */
+	private void removeLast() {
+		Node prev = last.prev;
+		prev.next = null;
+		last.prev = null;
+		last = prev;
+		this.currentSize--;
+	}
+
+	/**
+	 * 绉诲姩鍒伴摼琛ㄥご锛岃〃绀鸿繖涓妭鐐规槸鏈�鏂颁娇鐢ㄨ繃鐨�
+	 * 
+	 * @param node
+	 */
+	private void moveExistingNodeToHead(Node node) {
+
+		if (node == first) {
+
+			return;
+		} else if (node == last) {
+			// 褰撳墠鑺傜偣鏄摼琛ㄥ熬锛� 闇�瑕佹斁鍒伴摼琛ㄥご
+			Node prevNode = node.prev;
+			prevNode.next = null;
+			last.prev = null;
+			last = prevNode;
+
+		} else {
+			// node 鍦ㄩ摼琛ㄧ殑涓棿锛� 鎶妌ode 鐨勫墠鍚庤妭鐐硅繛鎺ヨ捣鏉�
+			Node prevNode = node.prev;
+			prevNode.next = node.next;
+
+			Node nextNode = node.next;
+			nextNode.prev = prevNode;
+
+		}
+
+		node.prev = null;
+		node.next = first;
+		first.prev = node;
+		first = node;
+
+	}
+
+	private boolean isEmpty() {
+		return (first == null) && (last == null);
+	}
+
+	public String toString() {
+		StringBuilder buffer = new StringBuilder();
+		Node node = first;
+		while (node != null) {
+			buffer.append(node.pageNum);
+
+			node = node.next;
+			if (node != null) {
+				buffer.append(",");
+			}
+		}
+		return buffer.toString();
+	}
+
+}
\ No newline at end of file
diff --git a/group22/627559964/src/com/coding/basic/linklist/LRUPageFrameTest b/group22/627559964/src/com/coding/basic/linklist/LRUPageFrameTest
new file mode 100644
index 0000000000..5e50d719c4
--- /dev/null
+++ b/group22/627559964/src/com/coding/basic/linklist/LRUPageFrameTest
@@ -0,0 +1,35 @@
+package com.coding.basic.linklist;
+
+
+import  org.junit.Assert;
+
+import org.junit.Test;
+
+
+public class LRUPageFrameTest {
+	
+	@Test
+	public void testAccess() {
+		LRUPageFrame frame = new LRUPageFrame(3);
+		frame.access(7);
+		frame.access(0);
+		frame.access(1);
+		Assert.assertEquals("1,0,7", frame.toString());
+		frame.access(2);
+		Assert.assertEquals("2,1,0", frame.toString());
+		frame.access(0);
+		Assert.assertEquals("0,2,1", frame.toString());
+		frame.access(0);
+		Assert.assertEquals("0,2,1", frame.toString());
+		frame.access(3);
+		Assert.assertEquals("3,0,2", frame.toString());
+		frame.access(0);
+		Assert.assertEquals("0,3,2", frame.toString());
+		frame.access(4);
+		Assert.assertEquals("4,0,3", frame.toString());
+		frame.access(5);
+		Assert.assertEquals("5,4,0", frame.toString());
+		
+	}
+
+}
diff --git a/group22/627559964/src/com/coding/basic/LinkedList.java b/group22/627559964/src/com/coding/basic/linklist/LinkedList.java
similarity index 98%
rename from group22/627559964/src/com/coding/basic/LinkedList.java
rename to group22/627559964/src/com/coding/basic/linklist/LinkedList.java
index 39b0250ae3..843495caa4 100644
--- a/group22/627559964/src/com/coding/basic/LinkedList.java
+++ b/group22/627559964/src/com/coding/basic/linklist/LinkedList.java
@@ -1,4 +1,7 @@
-package com.coding.basic;
+package com.coding.basic.linklist;
+
+import com.coding.basic.Iterator;
+import com.coding.basic.List;
 
 /**
  * 鑷畾涔塋inkList
diff --git a/group22/627559964/src/com/coding/basic/Stack.java b/group22/627559964/src/com/coding/basic/stack/Stack.java
similarity index 68%
rename from group22/627559964/src/com/coding/basic/Stack.java
rename to group22/627559964/src/com/coding/basic/stack/Stack.java
index 84e90bfb75..ce602f94d9 100644
--- a/group22/627559964/src/com/coding/basic/Stack.java
+++ b/group22/627559964/src/com/coding/basic/stack/Stack.java
@@ -1,18 +1,20 @@
-package com.coding.basic;
+package com.coding.basic.stack;
+
+import com.coding.basic.array.ArrayList;
 
 /**
- * 自定义stack
+ * 鑷畾涔塻tack
  * 
  * @author xiongrui233
  *
  */
 public class Stack {
 	
-	//元素集合
+	//鍏冪礌闆嗗悎
 	private ArrayList elementData = new ArrayList();
 
 	/**
-	 * 向栈顶压入元素
+	 * 鍚戞爤椤跺帇鍏ュ厓绱�
 	 * @param o
 	 */
 	public void push(Object o) {
@@ -20,7 +22,7 @@ public void push(Object o) {
 	}
 
 	/**
-	 * 获得栈顶元素,并移除栈里该元素
+	 * 鑾峰緱鏍堥《鍏冪礌,骞剁Щ闄ゆ爤閲岃鍏冪礌
 	 * @return obj
 	 */
 	public Object pop() {
@@ -30,7 +32,7 @@ public Object pop() {
 	}
 
 	/**
-	 * 获得栈顶元素,不移除栈里该元素
+	 * 鑾峰緱鏍堥《鍏冪礌,涓嶇Щ闄ゆ爤閲岃鍏冪礌
 	 * @return obj
 	 */
 	public Object peek() {
@@ -38,7 +40,7 @@ public Object peek() {
 	}
 
 	/**
-	 * 判断该栈是否为空
+	 * 鍒ゆ柇璇ユ爤鏄惁涓虹┖
 	 * @return true/false
 	 */
 	public boolean isEmpty() {
@@ -49,7 +51,7 @@ public boolean isEmpty() {
 	}
 
 	/**
-	 * 获得栈的大小
+	 * 鑾峰緱鏍堢殑澶у皬
 	 * @return size
 	 */
 	public int size() {
diff --git a/group22/627559964/src/com/coding/basic/stack/StackUtil.java b/group22/627559964/src/com/coding/basic/stack/StackUtil.java
new file mode 100644
index 0000000000..cb69d39c58
--- /dev/null
+++ b/group22/627559964/src/com/coding/basic/stack/StackUtil.java
@@ -0,0 +1,100 @@
+package com.coding.basic.stack;
+
+public class StackUtil {
+
+	/**
+	 * 鍋囪鏍堜腑鐨勫厓绱犳槸Integer, 浠庢爤椤跺埌鏍堝簳鏄� : 5,4,3,2,1 璋冪敤璇ユ柟娉曞悗锛� 鍏冪礌娆″簭鍙樹负: 1,2,3,4,5
+	 * 娉ㄦ剰锛氬彧鑳戒娇鐢⊿tack鐨勫熀鏈搷浣滐紝鍗硃ush,pop,peek,isEmpty锛� 鍙互浣跨敤鍙﹀涓�涓爤鏉ヨ緟鍔�
+	 */
+	public static Stack reverse(Stack s) {
+		Stack s2 = new Stack();
+		while(!s.isEmpty()) {
+			s2.push(s.pop());
+		}
+		return s2;
+	}
+
+	/**
+	 * 鍒犻櫎鏍堜腑鐨勬煇涓厓绱� 娉ㄦ剰锛氬彧鑳戒娇鐢⊿tack鐨勫熀鏈搷浣滐紝鍗硃ush,pop,peek,isEmpty锛� 鍙互浣跨敤鍙﹀涓�涓爤鏉ヨ緟鍔�
+	 * 
+	 * @param o
+	 */
+	public static Stack remove(Stack s, Object o) {
+		Stack s2 = new Stack();
+		while(!s.isEmpty()) {
+			if(!o.equals(s.peek())) {
+				s2.push(s.pop());
+			} else {
+				s.pop();
+				break;
+			}
+		}
+		while(!s2.isEmpty()) {
+			s.push(s2.pop());
+		}
+		return s;
+	}
+
+	/**
+	 * 浠庢爤椤跺彇寰條en涓厓绱�, 鍘熸潵鐨勬爤涓厓绱犱繚鎸佷笉鍙� 娉ㄦ剰锛氬彧鑳戒娇鐢⊿tack鐨勫熀鏈搷浣滐紝鍗硃ush,pop,peek,isEmpty锛�
+	 * 鍙互浣跨敤鍙﹀涓�涓爤鏉ヨ緟鍔�
+	 * 
+	 * @param len
+	 * @return
+	 */
+	public static Object[] getTop(Stack s, int len) {
+		Object[] obj = new Object[len];
+		Stack s2 = new Stack();
+		for (int i = 0; i < obj.length; i++) {
+			obj[i] = s.peek();
+			s2.push(s.pop());
+		}
+		while (!s2.isEmpty()) {
+			s.push(s2.pop());
+		}
+		s2 = null;
+		return obj;
+	}
+
+	/**
+	 * 瀛楃涓瞫 鍙兘鍖呭惈杩欎簺瀛楃锛� ( ) [ ] { }, a,b,c... x,y,z 浣跨敤鍫嗘爤妫�鏌ュ瓧绗︿覆s涓殑鎷彿鏄笉鏄垚瀵瑰嚭鐜扮殑銆� 渚嬪s =
+	 * "([e{d}f])" , 鍒欒瀛楃涓蹭腑鐨勬嫭鍙锋槸鎴愬鍑虹幇锛� 璇ユ柟娉曡繑鍥瀟rue 濡傛灉 s = "([b{x]y})",
+	 * 鍒欒瀛楃涓蹭腑鐨勬嫭鍙蜂笉鏄垚瀵瑰嚭鐜扮殑锛� 璇ユ柟娉曡繑鍥瀎alse;
+	 * 
+	 * @param s
+	 * @return
+	 */
+	public static boolean isValidPairs(String s) {
+		Stack left = new Stack();
+		Stack right = new Stack();
+		char[] arr = new char[s.length()];
+		arr = s.toCharArray();
+		for (int i = 0; i < arr.length; i++) {
+			if ('('==(arr[i]) || '['==(arr[i]) || '{'==(arr[i])) {
+				left.push(arr[i]);
+			}
+			if (')'==(arr[i]) || ']'==(arr[i]) || '}'==(arr[i])) {
+				right.push(arr[i]);
+			}
+		}
+		right = StackUtil.reverse(right);
+		List<String> list = new ArrayList<String>();
+		list.add("()");
+		list.add("[]");
+		list.add("{}");
+		while (!left.isEmpty() && !right.isEmpty()) {
+			String temp = left.peek().toString() + right.peek().toString();
+			if (list.contains(temp)) {
+				left.pop();
+				right.pop();
+			} else {
+				return false;
+			}
+		}
+		if (!left.isEmpty() || !right.isEmpty()) {
+			return false;
+		}
+		return true;
+	}
+
+}
diff --git a/group22/627559964/src/com/jvm/ClassFileLoader.java b/group22/627559964/src/com/jvm/ClassFileLoader.java
new file mode 100644
index 0000000000..1b0d6c0206
--- /dev/null
+++ b/group22/627559964/src/com/jvm/ClassFileLoader.java
@@ -0,0 +1,62 @@
+package com.jvm;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+public class ClassFileLoader {
+
+	private List<String> clzPaths = new ArrayList<String>();
+
+	public byte[] readBinaryCode(String className){
+		File file = null;
+		for (String string : clzPaths) {
+			file = new File(string + className.replace(".", "/") + ".class");
+			//TODO 宸叉壘鍒板氨閫�鍑�,鏄笉鏄湁闂锛�
+			if (file.exists()){
+				break;
+			}
+		}
+		if (file == null) {
+			new FileNotFoundException("classpath涓湭鎵惧埌璇ユ枃浠�");
+		}
+		byte[] bt = new byte[(int) file.length()];
+		byte[] buf = new byte[1024];
+		
+		try {
+			InputStream in = new FileInputStream(file);
+			ByteArrayOutputStream out = new ByteArrayOutputStream();
+			int n;
+			while ((n=in.read(buf)) != -1) {
+				out.write(buf, 0, n);
+			}
+			bt = out.toByteArray();
+		} catch (FileNotFoundException e) {
+			e.printStackTrace();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+		return bt;
+	}
+
+	public void addClassPath(String path) {
+		clzPaths.add(path);
+	}
+
+	public String getClassPath() {
+		StringBuilder paths = new StringBuilder();
+		for (int i = 0; i < clzPaths.size(); i++) {
+			paths.append(clzPaths.get(i));
+			if(i != clzPaths.size() - 1) {
+				paths.append(";");
+			}
+		}
+		return paths.toString();
+	}
+
+}
diff --git a/group22/627559964/src/com/jvm/ClassFileloaderTest b/group22/627559964/src/com/jvm/ClassFileloaderTest
new file mode 100644
index 0000000000..02ace52171
--- /dev/null
+++ b/group22/627559964/src/com/jvm/ClassFileloaderTest
@@ -0,0 +1,78 @@
+package com.jvm;
+
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.coderising.jvm.loader.ClassFileLoader;
+
+public class ClassFileloaderTest {
+
+	static String path1 = "F:/workStu/ClassLoaderTest/bin/";
+	static String path2 = "C:/temp";
+
+	@Before
+	public void setUp() throws Exception {
+	}
+
+	@After
+	public void tearDown() throws Exception {
+	}
+
+	@Test
+	public void testClassPath() {
+
+		ClassFileLoader loader = new ClassFileLoader();
+		loader.addClassPath(path1);
+		loader.addClassPath(path2);
+
+		String clzPath = loader.getClassPath();
+		
+		Assert.assertEquals(path1 + ";" + path2, clzPath);
+
+	}
+
+	@Test
+	public void testClassFileLength() {
+
+		ClassFileLoader loader = new ClassFileLoader();
+		loader.addClassPath(path1);
+
+		String className = "com.coderising.jvm.test.EmployeeV1";
+
+		byte[] byteCodes = loader.readBinaryCode(className);
+
+		// 娉ㄦ剰锛氳繖涓瓧鑺傛暟鍙兘鍜屼綘鐨凧VM鐗堟湰鏈夊叧绯伙紝 浣犲彲浠ョ湅鐪嬬紪璇戝ソ鐨勭被鍒板簳鏈夊澶�
+		Assert.assertEquals(1226, byteCodes.length);
+
+	}
+
+	@Test
+	public void testMagicNumber() {
+		ClassFileLoader loader = new ClassFileLoader();
+		loader.addClassPath(path1);
+		String className = "com.coderising.jvm.test.EmployeeV1";
+		byte[] byteCodes = loader.readBinaryCode(className);
+		byte[] codes = new byte[] { byteCodes[0], byteCodes[1], byteCodes[2], byteCodes[3] };
+
+		String acctualValue = this.byteToHexString(codes);
+
+		Assert.assertEquals("cafebabe", acctualValue);
+	}
+
+	private String byteToHexString(byte[] codes) {
+		StringBuffer buffer = new StringBuffer();
+		for (int i = 0; i < codes.length; i++) {
+			byte b = codes[i];
+			int value = b & 0xFF;
+			String strHex = Integer.toHexString(value);
+			if (strHex.length() < 2) {
+				strHex = "0" + strHex;
+			}
+			buffer.append(strHex);
+		}
+		return buffer.toString();
+	}
+
+}
diff --git a/group22/627559964/src/com/jvm/EmployeeV1.java b/group22/627559964/src/com/jvm/EmployeeV1.java
new file mode 100644
index 0000000000..6d56f64652
--- /dev/null
+++ b/group22/627559964/src/com/jvm/EmployeeV1.java
@@ -0,0 +1,30 @@
+package com.jvm;
+
+public class EmployeeV1 {
+
+	private String name;
+	private int age;
+
+	public EmployeeV1(String name, int age) {
+		this.name = name;
+		this.age = age;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public void setAge(int age) {
+		this.age = age;
+	}
+
+	public void sayHello() {
+		System.out.println("Hello , this is class Employee ");
+	}
+
+	public static void main(String[] args) {
+		EmployeeV1 p = new EmployeeV1("Andy", 29);
+		p.sayHello();
+
+	}
+}
\ No newline at end of file
diff --git a/group22/627559964/src/demo/Demo.java b/group22/627559964/src/demo/Demo.java
index 4fbb5c6b40..833babbe20 100644
--- a/group22/627559964/src/demo/Demo.java
+++ b/group22/627559964/src/demo/Demo.java
@@ -3,10 +3,10 @@
 import java.util.Arrays;
 import java.util.PriorityQueue;
 
-import com.coding.basic.ArrayList;
 import com.coding.basic.Iterator;
-import com.coding.basic.LinkedList;
 import com.coding.basic.List;
+import com.coding.basic.array.ArrayList;
+import com.coding.basic.linklist.LinkedList;
 
 public class Demo {
 	public static void main(String[] args) {
diff --git a/group22/627559964/test/com/coderising/array/TestArrayUtil.java b/group22/627559964/test/com/coderising/array/TestArrayUtil.java
index f597900492..a7ec1e9e1e 100644
--- a/group22/627559964/test/com/coderising/array/TestArrayUtil.java
+++ b/group22/627559964/test/com/coderising/array/TestArrayUtil.java
@@ -7,6 +7,7 @@
 import org.junit.Assert;
 import org.junit.Test;
 
+import com.coding.basic.array.ArrayUtil;
 import com.sun.scenario.effect.Merge;
 
 public class TestArrayUtil {
diff --git a/group22/627559964/test/com/coding/basic/TestArrayList.java b/group22/627559964/test/com/coding/basic/array/TestArrayList.java
similarity index 88%
rename from group22/627559964/test/com/coding/basic/TestArrayList.java
rename to group22/627559964/test/com/coding/basic/array/TestArrayList.java
index 68dabbb042..436dc6e376 100644
--- a/group22/627559964/test/com/coding/basic/TestArrayList.java
+++ b/group22/627559964/test/com/coding/basic/array/TestArrayList.java
@@ -1,4 +1,4 @@
-package com.coding.basic;
+package com.coding.basic.array;
 
 import java.util.Arrays;
 
@@ -6,6 +6,10 @@
 import org.junit.Before;
 import org.junit.Test;
 
+import com.coding.basic.Iterator;
+import com.coding.basic.List;
+import com.coding.basic.array.ArrayList;
+
 public class TestArrayList {
 
 	private List list = null;
diff --git a/group22/627559964/test/com/coding/basic/linklist/LRUPageFrameTest.java b/group22/627559964/test/com/coding/basic/linklist/LRUPageFrameTest.java
new file mode 100644
index 0000000000..0153a1d40d
--- /dev/null
+++ b/group22/627559964/test/com/coding/basic/linklist/LRUPageFrameTest.java
@@ -0,0 +1,33 @@
+package com.coding.basic.linklist;
+
+import  org.junit.Assert;
+
+import org.junit.Test;
+
+public class LRUPageFrameTest {
+	
+	@Test
+	public void testAccess() {
+		LRUPageFrame frame = new LRUPageFrame(3);
+		frame.access(7);
+		frame.access(0);
+		frame.access(1);
+		Assert.assertEquals("1,0,7", frame.toString());
+		frame.access(2);
+		Assert.assertEquals("2,1,0", frame.toString());
+		frame.access(0);
+		Assert.assertEquals("0,2,1", frame.toString());
+		frame.access(0);
+		Assert.assertEquals("0,2,1", frame.toString());
+		frame.access(3);
+		Assert.assertEquals("3,0,2", frame.toString());
+		frame.access(0);
+		Assert.assertEquals("0,3,2", frame.toString());
+		frame.access(4);
+		Assert.assertEquals("4,0,3", frame.toString());
+		frame.access(5);
+		Assert.assertEquals("5,4,0", frame.toString());
+		
+	}
+
+}
\ No newline at end of file
diff --git a/group22/627559964/test/com/jvm/ClassFileloaderTest.java b/group22/627559964/test/com/jvm/ClassFileloaderTest.java
new file mode 100644
index 0000000000..7eb602dcab
--- /dev/null
+++ b/group22/627559964/test/com/jvm/ClassFileloaderTest.java
@@ -0,0 +1,78 @@
+package com.jvm;
+
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+
+public class ClassFileloaderTest {
+
+	static String path1 = "C:\\Users\\liuxin\\git\\coding2017\\liuxin\\mini-jvm\\bin";
+	static String path2 = "C:\temp";
+
+	@Before
+	public void setUp() throws Exception {
+	}
+
+	@After
+	public void tearDown() throws Exception {
+	}
+
+	@Test
+	public void testClassPath() {
+
+		ClassFileLoader loader = new ClassFileLoader();
+		loader.addClassPath(path1);
+		loader.addClassPath(path2);
+
+		String clzPath = loader.getClassPath();
+
+		Assert.assertEquals(path1 + ";" + path2, clzPath);
+
+	}
+
+	@Test
+	public void testClassFileLength() {
+
+		ClassFileLoader loader = new ClassFileLoader();
+		loader.addClassPath(path1);
+
+		String className = "com.coderising.jvm.test.EmployeeV1";
+
+		byte[] byteCodes = loader.readBinaryCode(className);
+
+		// 娉ㄦ剰锛氳繖涓瓧鑺傛暟鍙兘鍜屼綘鐨凧VM鐗堟湰鏈夊叧绯伙紝 浣犲彲浠ョ湅鐪嬬紪璇戝ソ鐨勭被鍒板簳鏈夊澶�
+		Assert.assertEquals(1056, byteCodes.length);
+
+	}
+
+	@Test
+	public void testMagicNumber() {
+		ClassFileLoader loader = new ClassFileLoader();
+		loader.addClassPath(path1);
+		String className = "com.coderising.jvm.test.EmployeeV1";
+		byte[] byteCodes = loader.readBinaryCode(className);
+		byte[] codes = new byte[] { byteCodes[0], byteCodes[1], byteCodes[2],
+				byteCodes[3] };
+
+		String acctualValue = this.byteToHexString(codes);
+
+		Assert.assertEquals("cafebabe", acctualValue);
+	}
+
+	private String byteToHexString(byte[] codes) {
+		StringBuffer buffer = new StringBuffer();
+		for (int i = 0; i < codes.length; i++) {
+			byte b = codes[i];
+			int value = b & 0xFF;
+			String strHex = Integer.toHexString(value);
+			if (strHex.length() < 2) {
+				strHex = "0" + strHex;
+			}
+			buffer.append(strHex);
+		}
+		return buffer.toString();
+	}
+
+}
\ No newline at end of file