public class Person { private String name; private int age; } public class User { private String name; private int age; } public class Main { public static void main(String[] args) { Person person = new Person(); person.setAge(20); User user = new User(); user.setName(person.getName()); user.setAge(person.getAge()); System.out.println(user.getName()); System.out.println(user.getAge()); } } import org.apache.commons.beanutils.BeanUtils; public class Main { public static void main(String[] args) { Person person = new Person(); person.setAge(20); User user = new User(); try { BeanUtils.copyProperties(user, person); } catch (Exception e) { e.printStackTrace(); } System.out.println(user.getName()); System.out.println(user.getAge()); } }


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