Java AtomicReference mergeProperties(Properties... properties)

Description

Merges the passed properties

License

Apache License

Parameter

Parameter	Description
properties	The properties to merge

Return

the merged properties

Declaration

public static Properties mergeProperties(Properties... properties) 

Method Source Code

//package com.java2s;
/**//w w  w.  j  a  va  2s.  c  o m
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you 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.
 */

import java.util.Properties;
import java.util.concurrent.atomic.AtomicReference;

public class Main {
    /** App specified properties that take presedence over sys props, but are not IN sys props */
    private static final AtomicReference<Properties> appProperties = new AtomicReference<Properties>(null);

    /**
     * Merges the passed properties
     * @param properties The properties to merge
     * @return the merged properties
     */
    public static Properties mergeProperties(Properties... properties) {
        Properties allProps = new Properties(System.getProperties());
        for (int i = properties.length - 1; i >= 0; i--) {
            if (properties[i] != null && properties[i].size() > 0) {
                allProps.putAll(properties[i]);
            }
        }
        final Properties appProps = appProperties.get();
        if (appProps != null) {
            allProps.putAll(appProps);
        }
        return allProps;
    }
}

Related

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3. getSplineCoefficients(int n, float x)
4. isTerminated(AtomicReference field)
5. length(AtomicReferenceArray buf)
6. pack(int count, Object[] array, AtomicReference edit, int idx)
7. runInThread(final Runnable runnable)
8. runInThread(final Runnable runnable)