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org.codehaus.plexus.util.PropertyUtils Maven / Gradle / Ivy

package org.codehaus.plexus.util;

/*
 * Copyright The Codehaus Foundation.
 *
 * 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.
 */

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.nio.file.Files;
import java.util.Objects;
import java.util.Properties;

/**
 * Static methods to create Properties loaded from various sources.
 *
 * @author Jason van Zyl
 * @author Michal Maczka
 */
public class PropertyUtils {

    public static Properties loadProperties(final URL url) throws IOException {
        return loadProperties(Objects.requireNonNull(url, "url").openStream());
    }

    public static Properties loadProperties(final File file) throws IOException {
        return loadProperties(
                Files.newInputStream(Objects.requireNonNull(file, "file").toPath()));
    }

    public static Properties loadProperties(final InputStream is) throws IOException {
        final Properties properties = new Properties();

        // Make sure the properties stream is valid
        if (is != null) {
            try (InputStream in = is) {
                properties.load(in);
            }
        }

        return properties;
    }
}




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