Added demo for ClosableTabbedPane

Signed-off-by: weisj <weisj@arcor.de>

src/test/java/demo/tabbedPane/ClosableTabbedPaneDemo.java

@@ -0,0 +1,46 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020 Jannis Weis
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package demo.tabbedPane;
+
+import com.github.weisj.darklaf.components.ClosableTabbedPane;
+import demo.ComponentDemo;
+
+import javax.swing.*;
+
+public class ClosableTabbedPaneDemo extends TabbedPaneDemo {
+
+    public static void main(final String[] args) {
+        ComponentDemo.showDemo(new ClosableTabbedPaneDemo());
+    }
+
+    protected JTabbedPane createTabbedPane() {
+        return new ClosableTabbedPane();
+    }
+
+    @Override
+    public String getTitle() {
+        return "ClosableTabbPane Demo";
+    }
+}
+