Giới thiệu về Thread trong java

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A Guide to Advanced Java - Module 1 - Thread
30/07/2008
Module 1
Introduction to Thread
•
Objecve
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A Guide to Advanced Java - Module 1 - Thread
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Dene Threads
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A Guide to Advanced Java - Module 1 - Thread
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A Guide to Advanced Java - Module 1 - Thread
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Creang Threads
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Sub classing Thread:
–
Creang subclass
–
Overriding the run()
method
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Starng the thread
•
Using the Runnable
interface:
–

Implemenng the
Runnable interface
–
Implemenng the run()
method
–
Starng the thread
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A Guide to Advanced Java - Module 1 - Thread
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Thread states
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A Guide to Advanced Java - Module 1 - Thread
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Methods of the Thread class
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The currentThread() method returns the thread running.
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The getName() method helps to retrieve the name of the
current thread.
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The setName() method assigns a name to a thread.
•
The start() method allocates the system resources
necessary to run the thread and executes the run()
method of its target object.
•
The run() method contains instrucons, which are
executed when the start() method is invoked.
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A Guide to Advanced Java - Module 1 - Thread
30/07/2008
Methods of the Thread class …
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A Guide to Advanced Java - Module 1 - Thread
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Methods of the Thread class …
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A Guide to Advanced Java - Module 1 - Thread
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Managing Thread
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Thread priority
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Thread.MAX_PRIORITY : constant value of 10
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Thread.NORM_PRIORITY : constant value of 5, default
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Thread.MIN_PRIORITY : constant value of 1
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Methods:
–
setPriority()
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getPriority()
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Thread priority helps the thread scheduler to decide
which thread to run
•
Priority also helps the OS to decide the amount of

resource that has to be allocated to each thread
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A Guide to Advanced Java - Module 1 - Thread
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Daemon Threads
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setDaemon() method
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isDaemon() method
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A Guide to Advanced Java - Module 1 - Thread
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Needs for Daemon Thread
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A Guide to Advanced Java - Module 1 - Thread
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Summary
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A Guide to Advanced Java - Module 1 - Thread
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LAB & Exercises

LAB
1) Extending the Thread class
2) Implemenng the Runnable
3) Creang the Thread objects
4) Using sleep() and getName() methods
5) Displaying Thread class method descripons
6) Se<ng and ge<ng Thread priories


Exercises

Write a thread displaying an electronic clock