inital

1 files changed, 31 insertions, 0 deletions

diff --git a/src/main/java/at/gv/util/data/Empty.java b/src/main/java/at/gv/util/data/Empty.java
new file mode 100644
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--- /dev/null
+++ b/src/main/java/at/gv/util/data/Empty.java
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+/*
+ * Copyright 2011 Federal Chancellery Austria and
+ * Graz University of Technology
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package at.gv.util.data;
+
+/**
+ * @author <a href="mailto:thomas.knall@iaik.tugraz.at">Thomas Knall</a>
+ */
+public interface Empty {
+
+   /**
+    * Returns {@code true} if underlying object is empty.
+    *
+    * @return {@code true} if empty, {@code false} if not empty.
+    */
+   boolean isEmpty();
+
+}