/**
* Prop constructor
*
* <p>Example:<br>
* Prop prop = new Prop(new File("/var/config/my_config.txt"), "UTF-8");<br>
* String userName = prop.get("userName");
*
* @param file the properties File object
* @param encoding the encoding
*/
public Prop(File file, String encoding) {
if (file == null) throw new IllegalArgumentException("File can not be null.");
String fileName = file.getName();
if (!file.isFile()) throw new IllegalArgumentException("Not a file : " + fileName);
InputStream inputStream;
try {
inputStream = new FileInputStream(file);
load(fileName, inputStream, encoding);
} catch (FileNotFoundException e) {
logger.warn(e.getMessage(), e);
}
}
void load(String fileName, InputStream inputStream, String encoding) {
if (inputStream == null)
throw new IllegalArgumentException("Properties file not found in classpath: " + fileName);
try {
properties = new Properties();
properties.load(new InputStreamReader(inputStream, encoding == null ? "UTF-8" : encoding));
} catch (IOException e) {
throw new RuntimeException("Error loading properties file.", e);
} finally {
try {
inputStream.close();
} catch (IOException e) {
logger.warn(e.getMessage(), e);
}
}
}