PropertiesHelper.java

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import java.util.HashMap;import java.util.Map;import java.util.Properties;import java.util.StringTokenizer;public final class PropertiesHelper {public static boolean getBoolean(String property, Properties properties) {return Boolean.valueOf(properties.getProperty(property)).booleanValue();}public static boolean getBoolean(String property, Properties properties,boolean defaultValue) {String setting = properties.getProperty(property);return (setting == null) ? defaultValue : Boolean.valueOf(setting).booleanValue();}public static int getInt(String property, Properties properties,int defaultValue) {String propValue = properties.getProperty(property);return (propValue == null) ? defaultValue : Integer.parseInt(propValue);}public static long getLong(String property, Properties properties,long defaultValue) {String propValue = properties.getProperty(property);return (propValue == null) ? defaultValue : Long.parseLong(propValue);}public static String getString(String property, Properties properties,String defaultValue) {String propValue = properties.getProperty(property);return (propValue == null) ? defaultValue : propValue;}public static Integer getInteger(String property, Properties properties) {String propValue = properties.getProperty(property);return (propValue == null) ? null : Integer.valueOf(propValue);}public static Map<String,String> toMap(String property, String delim, Properties properties) {Map<String,String> map = new HashMap<String,String>();String propValue = properties.getProperty(property);if (propValue != null) {StringTokenizer tokens = new StringTokenizer(propValue, delim);while (tokens.hasMoreTokens()) {map.put(tokens.nextToken(), tokens.hasMoreElements() ? tokens.nextToken() : "");}}return map;}public static String[] toStringArray(String property, String delim,Properties properties) {return toStringArray(properties.getProperty(property), delim);}public static String[] split(String seperators, String list) {return split(seperators, list, false);}public static String[] split(String seperators, String list, boolean include) {StringTokenizer tokens = new StringTokenizer(list, seperators, include);String[] result = new String[tokens.countTokens()];int i = 0;while (tokens.hasMoreTokens()) {result[i++] = tokens.nextToken();}return result;}public static String[] toStringArray(String propValue, String delim) {if (propValue != null) {return split(delim, propValue);} else {return null;}}/** * replace a property by a starred version *  * @param props *            properties to check * @param key *            proeprty to mask * @return cloned and masked properties */public static Properties maskOut(Properties props, String key) {Properties clone = (Properties) props.clone();if (clone.get(key) != null) {clone.setProperty(key, "****");}return clone;}private PropertiesHelper() {}}
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