PropertiesUtil.java Source code

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Here is the source code for PropertiesUtil.java

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/*
 * Copyright Javelin Software, All rights reserved.
 */

import java.io.*;
import java.net.URL;
import java.net.URLConnection;
import java.util.*;

/**
 * PropertiesUtil is used to load and save properties to files.
 * <p>
 * @author Robin Sharp
 */

public class PropertiesUtil {

    public PropertiesUtil() {
    }

    public static Map getByValue(Properties properties, String value) {
        Map map = new HashMap();
        Iterator iter = properties.entrySet().iterator();
        do {
            if (!iter.hasNext())
                break;
            java.util.Map.Entry entry = (java.util.Map.Entry) iter.next();
            if (entry.getValue().equals(value))
                map.put(entry.getKey(), entry.getValue());
        } while (true);
        return map;
    }

    public static Properties load(Properties properties, String fileName) throws IOException {
        if (fileName == null) {
            throw new IllegalArgumentException("FileName is not set.");
        } else {
            return load(properties, new File(fileName));
        }
    }

    public static Properties load(Properties properties, File file) throws IOException {
        if (file == null) {
            throw new IllegalArgumentException("File is not set.");
        } else {
            return load(properties, ((InputStream) (new FileInputStream(file))));
        }
    }

    public static Properties load(Properties properties, URL url) throws IOException {
        if (url == null) {
            throw new IllegalArgumentException("Url is not set.");
        } else {
            URLConnection connection = url.openConnection();
            return load(properties, connection.getInputStream());
        }
    }

    public static Properties load(Properties properties, Class relativeClass, String relativeFileName)
            throws IOException {
        if (relativeClass == null) {
            throw new IllegalArgumentException("Relative Class is not set.");
        }
        if (relativeFileName == null) {
            throw new IllegalArgumentException("Relative File Name is not set.");
        } else {
            return load(properties, relativeClass.getResourceAsStream(relativeFileName));
        }
    }

    public static Properties load(Properties properties, InputStream inputStream) throws IOException {
        try {
            if (properties == null) {
                throw new IllegalArgumentException("Properties is not set.");
            }

            if (inputStream == null) {
                throw new IllegalArgumentException("InputStream is not set.");
            }

            properties.load(new BufferedInputStream(inputStream));
        } finally {
            if (inputStream != null)
                inputStream.close();
        }
        return properties;
    }

    public static void store(Properties properties, String fileName) throws IOException {
        if (fileName == null) {
            throw new IllegalArgumentException("FileName is not set.");
        } else {
            store(properties, new File(fileName));
            return;
        }
    }

    public static void store(Properties properties, File file) throws IOException {
        if (file == null) {
            throw new IllegalArgumentException("File is not set.");
        } else {
            store(properties, ((OutputStream) (new FileOutputStream(file))));
            return;
        }
    }

    public static void store(Properties properties, URL url) throws IOException {
        if (url == null) {
            throw new IllegalArgumentException("Url is not set.");
        } else {
            URLConnection connection = url.openConnection();
            connection.setDoOutput(true);
            store(properties, connection.getOutputStream());
            return;
        }
    }

    public static void store(Properties properties, Class relativeClass, String relativeFileName)
            throws IOException {
        if (relativeClass == null)
            throw new IllegalArgumentException("Relative Class is not set.");
        if (relativeFileName == null) {
            throw new IllegalArgumentException("Relative File Name is not set.");
        } else {
            String className = relativeClass.getName().substring(relativeClass.getName().lastIndexOf(".") + 1);
            URL url = relativeClass.getResource(String.valueOf(String.valueOf(className)).concat(".class"));
            String fileName = url.getFile();
            fileName = String.valueOf(fileName.substring(1, fileName.length() - className.length() - 6))
                    + String.valueOf(relativeFileName);
            store(properties, fileName);
            return;
        }
    }

    public static void store(Properties properties, OutputStream outputStream) throws IOException {
        try {
            if (properties == null) {
                throw new IllegalArgumentException("Properties is not set.");
            }
            if (outputStream == null) {
                throw new IllegalArgumentException("OutputStream is not set.");
            }
            properties.store(new BufferedOutputStream(outputStream), null);
        } finally {
            if (outputStream != null) {
                outputStream.close();
            }
        }
    }

    public static void main(String args[]) {
        try {
            System.out.println(load(new Properties(),
                    "C:/data/ccm_wa/dordev/Countrywide~csdrzs/Countrywide/src/com/javelin/util/test.properties"));
            System.out.println(load(new Properties(), new File(
                    "C:/data/ccm_wa/dordev/Countrywide~csdrzs/Countrywide/src/com/javelin/util/test.properties")));
            System.out.println(load(new Properties(), new URL(
                    "file:///C:/data/ccm_wa/dordev/Countrywide~csdrzs/Countrywide/src/com/javelin/util/test.properties")));
            System.out.println(load(new Properties(), PropertiesUtil.class, "test.properties"));
            Properties properties = new Properties();
            properties.put("1", "2");
            properties.put("2", "2");
            properties.put("3", "3");
            store(properties,
                    "C:/data/ccm_wa/dordev/Countrywide~csdrzs/Countrywide/src/com/javelin/util/test1.properties");
            store(properties, new File(
                    "C:/data/ccm_wa/dordev/Countrywide~csdrzs/Countrywide/src/com/javelin/util/test2.properties"));
            store(properties, PropertiesUtil.class, "test4.properties");
            System.out.println(getByValue(properties, "2"));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}