diff --git a/.gitignore b/.gitignore
index 15d9f04..eb034df 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@
 # Ignore Gradle build output directory
 build
 app/build
+app/bin
 ui
 
 .idea
diff --git a/app/src/main/java/cn/naipu/MiraiTris/App.java b/app/src/main/java/cn/naipu/MiraiTris/App.java
index a3a4731..6341f41 100644
--- a/app/src/main/java/cn/naipu/MiraiTris/App.java
+++ b/app/src/main/java/cn/naipu/MiraiTris/App.java
@@ -1,14 +1,8 @@
-/*
- * This source file was generated by the Gradle 'init' task
- */
 package cn.naipu.MiraiTris;
 
 public class App {
-    public String getGreeting() {
-        return "Hello World!";
-    }
-
     public static void main(String[] args) {
-        System.out.println(new App().getGreeting());
+        new JFrame().setVisible(true);
+        System.out.println("Hello World!");
     }
 }
diff --git a/app/src/main/java/cn/naipu/MiraiTris/JFrame.java b/app/src/main/java/cn/naipu/MiraiTris/JFrame.java
new file mode 100644
index 0000000..1fa473b
--- /dev/null
+++ b/app/src/main/java/cn/naipu/MiraiTris/JFrame.java
@@ -0,0 +1,22 @@
+package cn.naipu.MiraiTris;
+
+import javax.swing.*;
+
+public class JFrame extends javax.swing.JFrame {
+    public JFrame() {
+        initComponents();
+    }
+
+    private void initComponents() {
+
+        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
+        setTitle("MiraiTris");
+        //setResizable(true);
+        setSize(400,200);
+        JLabel jl = new JLabel("这是使用JFrame类创建的窗口");
+        getContentPane().add(jl);
+        setVisible(true);
+
+    }
+
+}
diff --git a/app/src/test/java/cn/naipu/MiraiTris/AppTest.java b/app/src/test/java/cn/naipu/MiraiTris/AppTest.java
index ae193fe..f3f9a10 100644
--- a/app/src/test/java/cn/naipu/MiraiTris/AppTest.java
+++ b/app/src/test/java/cn/naipu/MiraiTris/AppTest.java
@@ -3,12 +3,12 @@
  */
 package cn.naipu.MiraiTris;
 
-import org.junit.Test;
-import static org.junit.Assert.*;
+//import org.junit.Test;
+//import static org.junit.Assert.*;
 
-public class AppTest {
-    @Test public void appHasAGreeting() {
-        App classUnderTest = new App();
-        assertNotNull("app should have a greeting", classUnderTest.getGreeting());
-    }
-}
+//public class AppTest {
+//    @Test public void appHasAGreeting() {
+//        App classUnderTest = new App();
+//        assertNotNull("app should have a greeting", classUnderTest.getGreeting());
+//    }
+//}