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ThreadsOne.javaAPI DocExample1418Sun Apr 29 11:09:00 BST 2001None

ThreadsOne

public class ThreadsOne extends Applet implements Runnable
Solution to the old Threaded Label exercise: each instance of this class runs its own thread, with a counter that counts down to zero.
author
Ian Darwin
version
0.5, July 1997, for JDK1.1

Fields Summary
Label
lab
Button
but
Thread
t
int
count
Constructors Summary
Methods Summary
public voidinit()
init() [from Applet] - set up the GUI


		// Create the start button.
		add(but = new Button("Start"));
		but.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
			t = new Thread(ThreadsOne.this);
			t.start();
			}
		});

		// Make label large enough to hold three-digit number
		add(lab = new Label("000"));
	
		// Provide a count from the PARAM, default to 100.
		String snum;
		if ((snum = getParameter("count")) != null)
			setCount(Integer.parseInt(snum));
		else
			setCount(100);
public voidrun()
run() - do the work of the thread. Might get confused if the user pushes the button a second time before we finish.

		int c = count;
		while (c-- > 0) {
			lab.setText(Integer.toString(c));
			try {
				Thread.sleep(100);	// 100 msec
			} catch (Exception e) {
				return;
			}
		}
		System.out.println("All done");
public voidsetCount(int i)
Set the number of times the counter is to decrement

		count = i;