<dependency>
  <groupId>com.github.houbb</groupId>
  <artifactId>property</artifactId>
  <version>0.0.4</version>
</dependency>

User user = new User();
user.setName("hello");
user.setHobby("hobby");

final long time = 1574147668411L;
user.setBirthday(new Date(time));

PropertyBs propertyBs = PropertyBs.getInstance("setBean.properties")
    .set(user);

Assert.assertEquals("hobby", propertyBs.get("myHobby"));
Assert.assertEquals("1574147668411", propertyBs.get("birthday"));

PropertyBs propertyBs = PropertyBs.getInstance("setBean.properties"
    .set("myHobby", "play")
    .set("birthday", "1574147668411");
User user = new User();
propertyBs.asBean(user);
Assert.assertEquals("play", user.getHobby());
Assert.assertEquals(1574147668411L, user.getBirthday().getTime());

public class User {
  private String name;
  @PropertyField("myHobby")
  private String hobby;
  @PropertyField(converter = DateValueConverter.class)
  private Date birthday;

}

public class DateValueConverter implements IValueConverter {
  @Override
  public Object fieldValue(String value, IFieldValueContext context) {
    return new Date(Long.parseLong(value));
  }

  @Override
  public String propertyValue(Object value, IPropertyValueContext context) {
    Date date = (Date)value;
    return date.getTime()+"";
  }
}

UserArrayCollection userArrayCollection = buildUser();
PropertyBs propertyBs = PropertyBs.getInstance("setBeanArrayCollection.properties")
    .set(userArrayCollection);
Assert.assertEquals("array,collection", propertyBs.get("alias"));
Assert.assertEquals("array,collection", propertyBs.get("hobbies"));

public class UserArrayCollection {
  private List<String> alias;
  private String[] hobbies;
}

Book book = new Book();
book.name("《海底兩萬(wàn)里》").price("12.34");
UserEntry user = new UserEntry();
user.name("海倫").book(book).age("10");
PropertyBs propertyBs = PropertyBs.getInstance("setBeanEntry.properties")
    .set(user);
Assert.assertEquals("海倫", propertyBs.get("name"));
Assert.assertEquals("10", propertyBs.get("age"));
Assert.assertEquals("《海底兩萬(wàn)里》", propertyBs.get("book.name"));
Assert.assertEquals("12.34", propertyBs.get("book.price"));

Map<String, String> map = new HashMap<>();
map.put("name", "海倫");
map.put("age", "10");
map.put("book.name", "《海底兩萬(wàn)里》");
map.put("book.price", "12.34");
UserEntry userEntry = new UserEntry();
PropertyBs.getInstance("setBeanEntry.properties")
    .set(map)
    .asBean(userEntry);
Assert.assertEquals("UserEntry{name='海倫', age=10, book=Book{name='《海底兩萬(wàn)里》', price=12.34}}",
    userEntry.toString());

public class UserEntry {
  private String name;
  private String age;
  @PropertyEntry
  private Book book;
}

public class Book {
  private String name;
  private String price;
}