Using the "Follow File" option in the "Tools" menu, the user can open a text file in one of the panes on the bottom of DrJava's main frame and keep an eye on how it changes. DrJava checks every once in a while (by default every 300 milliseconds) if the file has changed and updates the display accordingly. The time between the updates and how many lines are displayed (by default only the last 100) can be controlled on the "Miscellaneous" pane of the "Preferences" frame (see Configuring DrJava).