17 Ağustos 2008 Pazar

Intellij Knows Swing

As I use Intellij more and more, I get more and more suprised, more and more excited.

Yesterday, I was trying to change the cursor in a swing project, using setCursor() method. I expected Cursor.W_RESIZE_CURSOR would return a java.awt.Cursor object and coded as below. But something was wrong with my code:

...And immediately, Intellij told me what was wrong with my code:). I should have called Cursor.getPreferredCursor(). I applied Intellij's suggestion, and the error was corrected. My intelligent IDE again saved me to search for example codes on the internet:

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.