Filtering on a JTree [closed]

Take a look at this implementation: It creates subclasses of DefaultMutableNode adding a “isVisible” property rather then actually removing/adding nodes from the TreeModel. Pretty sweet I think, and it solved my filtering problem neatly.

JOptionPane to get password

Yes, it is possible using JOptionPane.showOptionDialog(). Something like this: JPanel panel = new JPanel(); JLabel label = new JLabel(“Enter a password:”); JPasswordField pass = new JPasswordField(10); panel.add(label); panel.add(pass); String[] options = new String[]{“OK”, “Cancel”}; int option = JOptionPane.showOptionDialog(null, panel, “The title”, JOptionPane.NO_OPTION, JOptionPane.PLAIN_MESSAGE, null, options, options[1]); if(option == 0) // pressing OK button { char[] … Read more

Unicode characters in app doesn’t show correctly [closed]

At run-time, we can use Font.canDisplayUpTo(String) to determine which of the installed fonts can display a given text. Logical fonts such as Font.SANS_SERIF and Font.SERIF typically are made of of other fonts and can cover vast ranges of different scripts. Here is an example using the given text, with the results seen on this machine. … Read more

How to slowly change object color from one to another?

Here is an example the fades the background as you move from component to component: import java.awt.*; import java.awt.event.*; import java.util.Hashtable; import java.util.ArrayList; import javax.swing.*; public class Fader { // background color when component has focus private Color fadeColor; // steps to fade from original background to fade background private int steps; // apply transition … Read more

Pacman open/close mouth animation

Something like this might work for PacMan images. It uses a Java 2D based Shape instance to represent the form, and an AffineTransform to produce the different orientations. import java.awt.*; import java.awt.event.*; import java.awt.geom.*; import java.awt.image.BufferedImage; import javax.swing.*; import*; import javax.imageio.ImageIO; class PacManShape { private double size; private double rotation; final int maxSize = … Read more