The Marquee applet

• The Java applet consists instructions which the browser executes (init, start, run)
• A Thread is a sequence of actions the browser can execute at the same time it runs the applet
• The applet must be defined with the RUNNABLE inteface to enable a thread
• The Thread class belongs to the java.lang package, which is imported automatically
• Thread.sleep method creates a time delay
• The Thread.sleep method can be interrupted. It should be run only in a try{} catch {} loop which will catch the interrupts during sleep and decide what to do with them.
• The start-method creates a Thread for the current object (marquee)
• my_thread.start() starts the thread (in fact it starts the run function
• Run calls the repaint method which runs the paint function
• x is moved 10 pixels left and if it reaches the left side of the screen x will return to width (of the screen)
• note that run changes the location where the word should be drawn but paint does the drawing.