diff --git a/FirstGUI.java b/FirstGUI.java
index 1930b4f..22dc156 100644
--- a/FirstGUI.java
+++ b/FirstGUI.java
@@ -8,9 +8,10 @@
 
 import javax.swing.JButton;
 
-public class FirstGUI extends JPanel implements ActionListener, WindowListener {
+public class FirstGUI extends JPanel implements ActionListener, WindowListener, Runnable {
     JFrame frame;
     JButton button1, button2;
+    int seconds = 0; //秒数
     public static void main(String[] args) {
         new FirstGUI();
     }
@@ -29,6 +30,8 @@
     @Override
     public void actionPerformed(ActionEvent e) {
         System.out.println(e.getActionCommand());
+        Thread thread = new Thread(this);
+        thread.start();
     }
     @Override
     public void windowOpened(WindowEvent e) {
@@ -52,4 +55,15 @@
     @Override
     public void windowDeactivated(WindowEvent e) {
     }
+    @Override
+    public void run() {
+        for(int i=0; i< 10;i++){
+            System.out.println(i+" sec");
+            try {
+                Thread.sleep(1000);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+        }
+    }
 }