Undo / Redo functionality can be added to document classes in the javax.swing.text package very easily. All you need to do is add a listener for changes, and use a UndoManager to alter those changes. [Read More]

You can load properties stored in a key=value format (each property on a new line) using an InputStream and a Properties object: [Read More]

Simple Jars To create a simple jar, add all the class files required with the following example command-line statement: [Read More]

In order to read a text file, you can use the BufferedReader class in the java.io package. The following simple class starts up, reads a text file and prints each line to the screen, then closes the text file and exits. [Read More]

Dialog boxes using the swing set can be created using a combination of the JOptionPane and JDialog classes. For example, to create an error box: [Read More]