diff --git a/AlgebraicDataflowArchitectureModel/src/application/editor/Stage.java b/AlgebraicDataflowArchitectureModel/src/application/editor/Stage.java
index 44ac06e..8b549fe 100644
--- a/AlgebraicDataflowArchitectureModel/src/application/editor/Stage.java
+++ b/AlgebraicDataflowArchitectureModel/src/application/editor/Stage.java
@@ -73,6 +73,7 @@
         mxCell rootCell = (mxCell) graph.getDefaultParent();
         if(rootCell == null) return;
         if(rootCell.getChildCount() <= 0) return;
+        if(rootCell.getChildCount() <= layerNo) return;
 
         graph.getModel().setVisible(rootCell.getChildAt(layerNo), isEnable);
         graph.refresh();
diff --git a/AlgebraicDataflowArchitectureModel/src/application/editor/stages/DependencyCellEditor.java b/AlgebraicDataflowArchitectureModel/src/application/editor/stages/DependencyCellEditor.java
index 6de3df5..7049633 100644
--- a/AlgebraicDataflowArchitectureModel/src/application/editor/stages/DependencyCellEditor.java
+++ b/AlgebraicDataflowArchitectureModel/src/application/editor/stages/DependencyCellEditor.java
@@ -4,8 +4,10 @@
 import com.mxgraph.model.mxCell;
 import com.mxgraph.model.mxGeometry;
 import com.mxgraph.swing.mxGraphComponent;
+import models.dependencyModel.InterfaceNode;
 
 import javax.swing.*;
+import java.awt.*;
 import java.awt.event.MouseEvent;
 import java.util.EventObject;
 
@@ -44,7 +46,7 @@
                 isInterfaceNode(cell) &&
                 mouseEvent.getClickCount() == 2) {
 
-            editInterfaceName(cell, eventObj);
+            showInterfaceEditDialog(cell, eventObj);
         }
     }
 
@@ -255,29 +257,79 @@
         }
     }
 
-    public void editInterfaceName(mxCell cell, EventObject eventObj){
-        // Get the current label
-        String currentName = (cell.getValue() != null) ? cell.getValue().toString() : "";
+    /**
+     * Show dialog to edit interface name and method code
+     */
+    private void showInterfaceEditDialog(mxCell cell, EventObject eventObj) {
+        DependencyModelingStage ddmStage = (DependencyModelingStage) stage;
 
-        // Show input dialog
-        String newName = JOptionPane.showInputDialog(
-                null,
-                "Edit Interface Name:",
-                currentName
-        );
-
-        // If OK is pressed and input is not empty, update the label
-        if (newName != null && !newName.trim().isEmpty()) {
-            graphComponent.getGraph().getModel().beginUpdate();
-            try {
-                cell.setValue(newName);
-            } finally {
-                graphComponent.getGraph().getModel().endUpdate();
-            }
-            graphComponent.refresh();
+        // Get or create InterfaceNode
+        InterfaceNode interfaceNode = ddmStage.getInterfaceNode(cell);
+        if (interfaceNode == null) {
+            String currentName = (cell.getValue() != null) ? cell.getValue().toString() : "Interface";
+            interfaceNode = new InterfaceNode(currentName);
+            ddmStage.setInterfaceNode(cell, interfaceNode);
         }
+
+        // Create dialog
+        JDialog dialog = new JDialog((Frame) null, "Interface Settings", true);
+        dialog.setLayout(new BorderLayout(10, 10));
+
+        // Name field
+        JPanel namePanel = new JPanel(new BorderLayout(5, 5));
+        namePanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 5, 10));
+        namePanel.add(new JLabel("Interface Name:"), BorderLayout.WEST);
+        JTextField nameField = new JTextField(interfaceNode.getName(), 20);
+        namePanel.add(nameField, BorderLayout.CENTER);
+
+        // Method code area
+        JPanel codePanel = new JPanel(new BorderLayout(5, 5));
+        codePanel.setBorder(BorderFactory.createEmptyBorder(5, 10, 10, 10));
+        codePanel.add(new JLabel("Method Code:"), BorderLayout.NORTH);
+        JTextArea codeArea = new JTextArea(interfaceNode.getMethodCode(), 20, 40);
+        codeArea.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 12));
+        JScrollPane scrollPane = new JScrollPane(codeArea);
+        codePanel.add(scrollPane, BorderLayout.CENTER);
+
+        // Buttons
+        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
+        JButton okButton = new JButton("OK");
+        JButton cancelButton = new JButton("Cancel");
+
+        InterfaceNode finalInterfaceNode = interfaceNode;
+        okButton.addActionListener(e -> {
+            String newName = nameField.getText().trim();
+            if (!newName.isEmpty()) {
+                finalInterfaceNode.setName(newName);
+                finalInterfaceNode.setMethodCode(codeArea.getText());
+
+                graphComponent.getGraph().getModel().beginUpdate();
+                try {
+                    cell.setValue(newName);
+                } finally {
+                    graphComponent.getGraph().getModel().endUpdate();
+                }
+                graphComponent.refresh();
+            }
+            dialog.dispose();
+        });
+
+        cancelButton.addActionListener(e -> dialog.dispose());
+
+        buttonPanel.add(okButton);
+        buttonPanel.add(cancelButton);
+
+        // Add components to dialog
+        dialog.add(namePanel, BorderLayout.NORTH);
+        dialog.add(codePanel, BorderLayout.CENTER);
+        dialog.add(buttonPanel, BorderLayout.SOUTH);
+
+        dialog.pack();
+        dialog.setLocationRelativeTo(graphComponent);
+        dialog.setVisible(true);
     }
 
+
     @Override
     public void stopEditing(boolean cancel) {
 
diff --git a/AlgebraicDataflowArchitectureModel/src/application/editor/stages/DependencyModelingStage.java b/AlgebraicDataflowArchitectureModel/src/application/editor/stages/DependencyModelingStage.java
index 0887d60..d96d090 100644
--- a/AlgebraicDataflowArchitectureModel/src/application/editor/stages/DependencyModelingStage.java
+++ b/AlgebraicDataflowArchitectureModel/src/application/editor/stages/DependencyModelingStage.java
@@ -22,6 +22,7 @@
 import models.dataConstraintModel.ResourcePath;
 import models.dataFlowModel.*;
 import models.dependencyModel.DependencyGraph;
+import models.dependencyModel.InterfaceNode;
 import models.dependencyModel.mxInterfaceShape;
 
 import java.awt.event.MouseAdapter;
@@ -46,6 +47,7 @@
     private HashMap<ResourceNode, mxCell> resNodeToCell;
     private HashMap<DataTransferChannel, mxCell> eventChannelToCell;
 
+    private HashMap<mxCell, InterfaceNode> cellToInterfaceNode = new HashMap<>();
 
     //--------------------------------------------------
     //　コンストラクタ
@@ -66,6 +68,13 @@
         curState = nextState;
     }
 
+    public InterfaceNode getInterfaceNode(mxCell cell) {
+        return cellToInterfaceNode.get(cell);
+    }
+
+    public void setInterfaceNode(mxCell cell, InterfaceNode interfaceNode) {
+        cellToInterfaceNode.put(cell, interfaceNode);
+    }
 
     @Override
     public void init(Stage prevStage) {
diff --git a/AlgebraicDataflowArchitectureModel/src/models/dependencyModel/InterfaceNode.java b/AlgebraicDataflowArchitectureModel/src/models/dependencyModel/InterfaceNode.java
new file mode 100644
index 0000000..645ff11
--- /dev/null
+++ b/AlgebraicDataflowArchitectureModel/src/models/dependencyModel/InterfaceNode.java
@@ -0,0 +1,27 @@
+package models.dependencyModel;
+
+public class InterfaceNode {
+    private String name;
+    private String methodCode;
+
+    public InterfaceNode(String name) {
+        this.name = name;
+        this.methodCode = "";
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getMethodCode() {
+        return methodCode;
+    }
+
+    public void setMethodCode(String methodCode) {
+        this.methodCode = methodCode;
+    }
+}
\ No newline at end of file