1 files changed, 31 insertions, 0 deletions
diff --git a/core/utils/provider/src/main/java/org/onap/ccsdk/sli/core/utils/common/EnvProperties.java b/core/utils/provider/src/main/java/org/onap/ccsdk/sli/core/utils/common/EnvProperties.java
index 0dca28427..463191fb2 100644
--- a/core/utils/provider/src/main/java/org/onap/ccsdk/sli/core/utils/common/EnvProperties.java
+++ b/core/utils/provider/src/main/java/org/onap/ccsdk/sli/core/utils/common/EnvProperties.java
@@ -1,3 +1,23 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * onap
+ * ================================================================================
+ * Copyright (C) 2021 AT&T
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
 package org.onap.ccsdk.sli.core.utils.common;
 
 import java.io.IOException;
@@ -8,6 +28,17 @@ import java.util.Properties;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+/**
+ * Drop-in replacement for java.util.Properties that allows env
+ * variables to be used as settings for property files.  For example,
+ * 
+ * my.property = ${MY_PROPERTY}
+ * 
+ * A default value can also be provided using :- notation.  For example,
+ * 
+ * my.property = ${MY_PROPERTY:-defaultValue}
+ */
+
 public class EnvProperties extends Properties {
 
     @Override