Account.java:
class Account {
@Property
public Integer id;
@Property
public String name;
}someAccount.properties:
# A contrived example of a .properties file
id=24
name=Douglas Adams
Somewhere in your code:
//...
Account someAccount = new Account();
PropertiesHandler propHandler = new PropertiesHandler(someAccount);
InputStream propStream = this.getContextClassLoader()
.getResourceAsStream("someAccount.properties");
Properties someAccountProperties = new Properties();
someAccountProperties.load(propStream);
propHandler.applyProperties(someAccountProperties);
System.out.println(someAccount.id); // "24"
System.out.println(someAccount.name); // "Douglas Adams"
someAccount.id = 42;
someAccountProperties = propHandler.extractProperties();
someAccountProperties.store(
new FileWriter("someAccount.properties"),
"An updated contrived example of a .properties file"
);Now, someAccount.properties looks like this:
# ... TimeStamp ...
# An updated contrived example of a .properties file
id=42
name=Douglas Adams
All primitive types (and their Object companions) are supported, as well as simple arrays, sets, and lists of such types.
See the javadocs for details.