diff --git a/java-lesson/src/main/java/cn/vscoder/experiment_5/BankSystem/BankManagerSystem.java b/java-lesson/src/main/java/cn/vscoder/experiment_5/BankSystem/BankManagerSystem.java
index c14d596..dc678ea 100644
--- a/java-lesson/src/main/java/cn/vscoder/experiment_5/BankSystem/BankManagerSystem.java
+++ b/java-lesson/src/main/java/cn/vscoder/experiment_5/BankSystem/BankManagerSystem.java
@@ -12,6 +12,11 @@ import javax.swing.table.*;
  * @author xulongjin
  */
 public class BankManagerSystem extends JFrame {
+
+    public static void main(String[] args) {
+        new BankManagerSystem().setVisible(true);
+    }
+
     public BankManagerSystem() {
         initComponents();
     }
@@ -49,6 +54,7 @@ public class BankManagerSystem extends JFrame {
         table1 = new JTable();
 
         //======== this ========
+        setMaximumSize(new Dimension(2147483647, 600));
         var contentPane = getContentPane();
         contentPane.setLayout(new GridLayout(3, 0));
 
diff --git a/java-lesson/src/main/java/cn/vscoder/experiment_5/BankSystem/BankManagerSystem.jfd b/java-lesson/src/main/java/cn/vscoder/experiment_5/BankSystem/BankManagerSystem.jfd
index f8ff0ac..9835d3f 100644
--- a/java-lesson/src/main/java/cn/vscoder/experiment_5/BankSystem/BankManagerSystem.jfd
+++ b/java-lesson/src/main/java/cn/vscoder/experiment_5/BankSystem/BankManagerSystem.jfd
@@ -7,6 +7,7 @@ new FormModel {
 			"rows": 3
 		} ) {
 			name: "this"
+			"maximumSize": new java.awt.Dimension( 2147483647, 600 )
 			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class com.jformdesigner.runtime.NullLayout ) ) {
 				name: "panel1"
 				add( new FormComponent( "javax.swing.JLabel" ) {
diff --git a/java-lesson/src/main/java/cn/vscoder/experiment_5/BookSystem/BookManagerSystem.java b/java-lesson/src/main/java/cn/vscoder/experiment_5/BookSystem/BookManagerSystem.java
index a2a3a9a..fb508f0 100644
--- a/java-lesson/src/main/java/cn/vscoder/experiment_5/BookSystem/BookManagerSystem.java
+++ b/java-lesson/src/main/java/cn/vscoder/experiment_5/BookSystem/BookManagerSystem.java
@@ -280,19 +280,4 @@ public class BookManagerSystem extends JFrame {
     DefaultTableModel dModel;
     int i;
 
-
-//    @Override
-//    public void valueChanged(ListSelectionEvent e) {
-//        i = tableBookList.getSelectedRow();
-//        if (i >= 0) {
-//            inputBookSN.setText(dModel.getValueAt(i, 0).toString());
-//            inputBookName.setText(dModel.getValueAt(i, 1).toString());
-//            inputBookAuthor.setText(dModel.getValueAt(i, 2).toString());
-//            inputBookPublisher.setText(dModel.getValueAt(i, 3).toString());
-//            inputBookPrice.setText(dModel.getValueAt(i, 4).toString());
-//            inputBookRegisNumber.setText(dModel.getValueAt(i, 5).toString());
-//            selectIsBorrow.setSelected(Boolean.parseBoolean(dModel.getValueAt(i, 6).toString()));
-//        }
-//    }
-
 }