diff --git a/CsvReader.java b/CsvReader.java
new file mode 100644
index 0000000..ce46fd5
--- /dev/null
+++ b/CsvReader.java
@@ -0,0 +1,57 @@
+package  a6;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.BufferedReader;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+public class CsvReader {
+
+    private HashMap<String, Integer> columns = new HashMap<String, Integer>();
+    private ArrayList<String> values = new ArrayList<String>();
+    private ArrayList<String> strings = new ArrayList<String>();
+    private int curr_line = 0;
+
+    public boolean load(String filename) {
+        boolean ret = SysUtils.readStrings(filename, strings);
+        if (ret) {
+            if (nextLine()) {
+                for (int i = 0; i < values.size(); ++i) {
+                    columns.put(values.get(i), i);
+                }
+            }
+        }
+        return ret;
+    }
+
+    public boolean nextLine() {
+        if (curr_line >= strings.size()) {
+            return false;
+        }
+        values.clear();
+        for (String val : strings.get(curr_line).split(",")) {
+            values.add(val);
+        }
+        ++curr_line;
+        return true;
+    }
+
+    public XValue getValue(String key) {
+        if (!keyExists(key)) {
+            return new XValue();
+        }
+        String val = values.get(columns.get(key));
+        return new XValue(val
+                          .replaceAll("\\n", "\n")
+                          .replaceAll("，", ",")
+                          );
+    }
+
+    public boolean keyExists(String key) {
+        return columns.containsKey(key);
+    }
+
+}
diff --git a/MutableXObject.java b/MutableXObject.java
new file mode 100644
index 0000000..a43d4cb
--- /dev/null
+++ b/MutableXObject.java
@@ -0,0 +1,9 @@
+package  a6;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+public class MutableXObject extends XObject {
+
+}
diff --git a/SysUtils.java b/SysUtils.java
index 994ea01..28707c6 100644
--- a/SysUtils.java
+++ b/SysUtils.java
@@ -1,5 +1,13 @@
 package  a6;
 
+import java.io.File;
+import java.io.FileReader;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.FileNotFoundException;
+
+import java.util.ArrayList;
+
 import java.lang.reflect.Array;
 
 public class SysUtils {
@@ -29,4 +37,25 @@ public class SysUtils {
         }
     }
 
+    public static boolean readStrings(String filename, ArrayList<String> strings) {
+        File csvfile = new File(filename);
+        csvfile.setReadable(true);
+        BufferedReader br = null;
+        try {
+            br = new BufferedReader(new FileReader(csvfile));
+            String line;
+            try {
+                while ((line = br.readLine()) != null) {
+
+                }
+                br.close();
+            } catch (IOException e) {
+                return false;
+            }
+        } catch (FileNotFoundException e) {
+            return false;
+        }
+        return true;
+    }
+
 }
diff --git a/XObject.java b/XObject.java
index 36e8984..97caa52 100644
--- a/XObject.java
+++ b/XObject.java
@@ -1,5 +1,61 @@
 package  a6;
 
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
 public class XObject {
 
+    private XValue xValue;
+    private ArrayList arrayValue;
+    private HashMap objectValue;
+
+    public XValue asXValue() {
+        return xValue;
+    }
+
+    public XObject get(int index) {
+        return null;
+    }
+
+    public XObject get(String key) {
+        return null;
+    }
+
+    public boolean hasKey(int index) {
+        return false;
+    }
+
+    public boolean hasKey(String key) {
+        return false;
+    }
+
+    public boolean readFromJsonFile(String filename) {
+        return false;
+    }
+
+    public boolean readFromJsonString(String data) {
+        return false;
+    }
+
+    public boolean readFromXmlFile(String filename) {
+        return false;
+    }
+
+    public boolean readFromXmlString(String data) {
+        return false;
+    }
+
+    public void readFromUrlQueryString(String query_string) {
+
+    }
+
+    public String toJsonStr() {
+        return "";
+    }
+
+    public String toUrlEncodeStr() {
+        return "";
+    }
+
 }