4 Ağustos 2008 Pazartesi

How To Sort Collections Using commons-beanutils?

Hi everybody,
Following is another simple way of sorting collections using commons-beanutils package:
Assume that we have an object as below:

public class User {
private long userId;
private String userName;
private String password;

And we want to sort based on userName field. We can use BeanComparator class of commons-beanutils package as below to sort the list:

ArrayList list = new ArrayList();
//add User object inside the list.
Collections.sort(list, new BeanComparator("userName"));

Notice that, we passed the name of the field to be sorted, as the parameter, to BeanComparator class constructor. We accomplished sorting of a collection using just one line of code:).

Download commons-beanutils from http://commons.apache.org/beanutils.

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