How to copy properties from a bean to another bean in different class?

Question

I have two java class with same properties names.How Can I copy all the properties to another bean filled with data.I don't want to use the traditional form to copy properties because I have a lot of properties.

Thanks in advance.

1 class

@ManagedBean
@SessionScoped
public class UserManagedBean implements Serializable {

    private static final long serialVersionUID = 1L;
    private String userSessionId;
    private String userId;
    private String name;
    private String adress;
    ......................

2 class

public class UserBean {

    private String userSessionId;
    private String userId;
    private String name;
   ....................

Duplicate of http://stackoverflow.com/q/5937567/193634 – Rosdi Kasim Nov 04 '13 at 02:16 — Rosdi Kasim, Nov 04 '13 at 02:16

score 78 · Accepted Answer · edited Sep 23 '15 at 15:03

78

Use BeanUtils:

import org.apache.commons.beanutils.BeanUtils;

UserBean newObject = new UserBean(); 
BeanUtils.copyProperties(newObject, oldObject);

edited Sep 23 '15 at 15:03

prashant thakre

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answered Nov 04 '13 at 11:17

Mariusz Jamro

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7

It is NOT BeanUtils.copyProperties(oldObject, newObject) but BeanUtils.copyProperties(newObject, oldObject)! – electrotype Jan 01 '15 at 19:50
18

If you are using org.springframework.beans.BeanUtils then use like `BeanUtils.copyProperties(oldObject,newObject );` – prashant thakre Sep 23 '15 at 15:04
Simple format : BeanUtils.copyProperties(DomainBean, FormBean); – Lova Chittumuri Jun 04 '18 at 09:55

Jasper Blues · Answer 2 · 2019-03-21T09:48:42.723

5

Check out the Dozer Framework - its an object to object mapping framework. The idea is that:

Usually it will map by convention.
You can override this convention with a mapping file.

. . therefore mapping files are as compact as possible. Its useful for many cases, such as mapping a use-case specify service payload on to the reusable core model objects.

When delivering the SpringSource training courses we used to point out this framework very often.

Edit:

These days try MapStruct.

edited Mar 21 '19 at 09:48

answered Nov 04 '13 at 05:11

Jasper Blues

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Btw: I've voted to close this question as a duplicate, and expanded the existing Dozer answer here: http://stackoverflow.com/q/5937567/193634 – Jasper Blues Nov 04 '13 at 05:14

score 1 · Answer 3 · answered Nov 04 '13 at 02:14

If you use Apache's library, BeanUtils, you can do this easily:

http://commons.apache.org/proper/commons-beanutils/

In particular, look at copyProperties(Object, Object)

http://commons.apache.org/proper/commons-beanutils/apidocs/org/apache/commons/beanutils/BeanUtils.html#copyProperties(java.lang.Object, java.lang.Object)

Copy property values from the origin bean to the destination bean for all cases where the property names are the same.

score 0 · Answer 4 · answered Nov 04 '13 at 02:17

0

Use java reflection to set and get property values. There is spring bean property util which does the property value access. I would recommend to you java reflection.

answered Nov 04 '13 at 02:17

Arvind

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How to copy properties from a bean to another bean in different class?

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