12-Multithreading and GUI Programming

Principles of Software Construction:

A Brief Introduction to

Multithreading and GUI Programming

Josh Bloch

Charlie Garrod

School of

Computer Science

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Administrivia

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Homework 4b due next Thursday

HW 3 feedback pushed this morning.

HW 4a feedback available later this week

Last day to register to vote is TODAY

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Key concepts from Thursday¡­

? Class invariants must be maintained

¨C Make defensive copies where required

? Immutable class have many advantages

? Testing is critical to software quality

¨C When fixing bugs, write tests before code

¨C Good tests have high power-to-weight ratio

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Outline

? Multithreaded Programming basics

? GUI Programming

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What is a thread?

? Short for thread of execution

? Multiple threads run in same program concurrently

? Threads share the same address space

¨C Changes made by one thread may be read by others

? Multithreaded programming

¨C Also known as shared-memory multiprocessing

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