diff --git a/DGcreate/out/production/DGcreate/joggle/joggle$JFileChooserDemo.class b/DGcreate/out/production/DGcreate/joggle/joggle$JFileChooserDemo.class
new file mode 100644
index 0000000..ccb65b9
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diff --git a/DGcreate/out/production/DGcreate/joggle/joggle.class b/DGcreate/out/production/DGcreate/joggle/joggle.class
index 39434e3..1c4f63c 100644
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diff --git a/DGcreate/out/production/DGcreate/menu/Main$1.class b/DGcreate/out/production/DGcreate/menu/Main$1.class
deleted file mode 100644
index 8ed4429..0000000
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diff --git a/DGcreate/out/production/DGcreate/menu/Main$2.class b/DGcreate/out/production/DGcreate/menu/Main$2.class
deleted file mode 100644
index d527897..0000000
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diff --git a/DGcreate/out/production/DGcreate/menu/MainWindow$1.class b/DGcreate/out/production/DGcreate/menu/MainWindow$1.class
new file mode 100644
index 0000000..ac6e10e
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diff --git a/DGcreate/out/production/DGcreate/menu/MainWindow$2.class b/DGcreate/out/production/DGcreate/menu/MainWindow$2.class
new file mode 100644
index 0000000..3e04585
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diff --git a/DGcreate/out/production/DGcreate/menu/Main.class b/DGcreate/out/production/DGcreate/menu/MainWindow.class
similarity index 57%
rename from DGcreate/out/production/DGcreate/menu/Main.class
rename to DGcreate/out/production/DGcreate/menu/MainWindow.class
index 1419b67..3559704 100644
Binary files a/DGcreate/out/production/DGcreate/menu/Main.class and b/DGcreate/out/production/DGcreate/menu/MainWindow.class differ
diff --git a/DGcreate/src/joggle/joggle.java b/DGcreate/src/joggle/joggle.java
index eacaaa0..fcc7981 100644
--- a/DGcreate/src/joggle/joggle.java
+++ b/DGcreate/src/joggle/joggle.java
@@ -1,17 +1,36 @@
 package joggle;
 import javax.swing.*;
+import javax.swing.filechooser.FileNameExtensionFilter;
 import java.awt.Desktop;
 import java.io.*;
 
 public class joggle {
-    public static boolean open_resource(){
+    public static class JFileChooserDemo{
+        public static void fileFilter(JFileChooser fd, String flag){
+            if(flag == "maindow"){
+                fd.setFileFilter(new FileNameExtensionFilter("DRC(*.drc)", "drc"));
+                fd.setAcceptAllFileFilterUsed(false);
+            }
+            else{
+                fd.setFileFilter(new FileNameExtensionFilter("image(*.jpg,*.jpeg,*.png)", "drc"));
+                fd.setAcceptAllFileFilterUsed(false);
+            }
+        }
+        public static boolean open_resource(){
             JFileChooser fd = new JFileChooser();
             //fd.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
-            fd.showOpenDialog(null);
-            File f = fd.getSelectedFile();
-            if(f != null){}
-            return true;
+            fileFilter(fd, "mindow");
+            int val = fd.showOpenDialog(null);
+            if(val == fd.APPROVE_OPTION){
+                fd.getSelectedFile();
+                return true;
+            }
+            else{
+                return false;
+            }
+        }
     }
+
     public static void copyFile(String oldPath, String newPath) {
         try {
             int bytesum = 0;
diff --git a/DGcreate/src/menu/Main.java b/DGcreate/src/menu/MainWindow.java
similarity index 55%
rename from DGcreate/src/menu/Main.java
rename to DGcreate/src/menu/MainWindow.java
index 682040b..7a05a61 100644
--- a/DGcreate/src/menu/Main.java
+++ b/DGcreate/src/menu/MainWindow.java
@@ -8,7 +8,7 @@ import java.io.*;
 
 
 //主窗口
-public class Main extends menu {
+public class MainWindow extends menu {
     public static JFrame page = new JFrame("主菜单");
     //创建主窗口
     public static void main(String[] args) {
@@ -32,28 +32,27 @@ public class Main extends menu {
         //鼠标触发事件
         b.addActionListener(new AbstractAction() {
             public void actionPerformed(ActionEvent e) {
-                joggle.open_resource();
-                JFileChooser fd = new JFileChooser();
+                joggle.JFileChooserDemo.open_resource();
             }
         });
     }
-        //打开
-        public static void open(){
-            JButton b = new JButton("打开");
-            b.setBounds(625,400,250,50);
-            Container c = page.getContentPane();
-            c.setLayout(new FlowLayout());
-            c.add(b);
-            b.setDefaultCapable(true);
-            b.setVisible(true);
-            //鼠标触发事件
-            b.addActionListener(new AbstractAction() {
-                @Override
-                public void actionPerformed(ActionEvent e) {
-                    joggle.open_resource();
-                    joggle.copyFile("C:/Users/wangw/Desktop/英语作文","C:/Users/wangw/Desktop/英语作文");
-                }
-            });
+    //打开
+    public static void open(){
+        JButton b = new JButton("打开");
+        b.setBounds(625,400,250,50);
+        Container c = page.getContentPane();
+        c.setLayout(new FlowLayout());
+        c.add(b);
+        b.setDefaultCapable(true);
+        b.setVisible(true);
+        //鼠标触发事件
+        b.addActionListener(new AbstractAction() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                joggle.JFileChooserDemo.open_resource();
+                joggle.copyFile("C:/Users/wangw/Desktop/英语作文","C:/Users/wangw/Desktop/英语作文");
+            }
+        });
     }
 
-}
\ No newline at end of file
+}