Threads I: Introduction

Tom Kelliher, CS 245

Oct. 6, 2004

Administrivia

Announcements

Deliverables due today.

Next deliverables due: User interface mock-ups, collaboration diagrams. Due 10/13. Motivation. Don't forget traceability on collaboration diagrams.

Assignment

Complete the lab.

From Last Time

Class design.

Outline

1. Introduction.

2. Lab.

Coming Up

Threads II: Synchronization.

Introduction

1. What is a thread?

2. Why threads?

3. How do I make a thread?

   class Foo extends applet
   {
      Bar b = new Bar();
   
      public void init()
      {
         ...
         b.start();  // Get the thread going.
         ...
      }
   }
   
   class Bar extends Thread
   {
      ...
   
      public void run()
      {
         // This is where the thread "lives."
      }
   

   Other thread methods:
   1. sleep()
   2. start()
   3. stop() --- deprecated.

Lab