Java Properties Load from File loadProperties(File file)

Description

load Properties

License

Apache License

Declaration

@CheckForNull
    public static Properties loadProperties(File file) throws IOException 

Method Source Code

//package com.java2s;
/*//from   w  ww . ja  v a 2  s  .c  o m
 * #%L
 * %%
 * Copyright (C) 2011 - 2013 BMW Car IT GmbH
 * %%
 * 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.
 * #L%
 */

import java.io.File;
import java.io.FileInputStream;

import java.io.IOException;
import java.io.InputStream;

import java.util.Properties;

import javax.annotation.CheckForNull;

public class Main {
    @CheckForNull
    public static Properties loadProperties(File file) throws IOException {
        if (file != null) {
            if (!file.isDirectory()) {
                InputStream inputStream = new FileInputStream(file);
                return loadProperties(inputStream);
            } else {
                return loadPropertyDirectory(file);
            }
        }
        return null;
    }

    public static Properties loadProperties(InputStream configInputStream)
            throws IOException {
        return loadProperties(configInputStream, null);
    }

    public static Properties loadProperties(InputStream configInputStream,
            @CheckForNull Properties properties) throws IOException {
        if (configInputStream != null) {
            if (properties == null) {
                properties = new Properties();
            }
            properties.load(configInputStream);
            configInputStream.close();
            return properties;
        }
        return properties;
    }

    private static Properties loadPropertyDirectory(File dir)
            throws IOException {
        Properties returnValue = new Properties();
        File[] files = dir.listFiles();
        if (files != null) {
            for (File file : files) {
                if (file.getName().endsWith("properties")) {
                    InputStream inputStream = new FileInputStream(file);
                    loadProperties(inputStream, returnValue);
                }
            }
        }

        return returnValue;
    }
}

Related

1. loadProperties(File file)
2. loadProperties(File file)
3. loadProperties(File file)
4. loadProperties(File file)
5. loadProperties(File file)
6. loadProperties(File file)
7. loadProperties(File file)
8. loadProperties(File file, String charset)
9. loadProperties(File fileName)