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Lecture
10A |
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| Thread Scheduling & Priority |
The determination of when threads run is left up to the JVM implementation to allow maximum flexiblity for the various applications of Java.
Threads are assigned priorties between 1 (lowest) to 10(highest).
A thread can set its own thread up or down in priority.
Three standard priority values are defined:
MIN_PRIORITY
NORM_PRIORITY
MAX_PRIORITY
For example,
...
Thread threadX=new Thread(this);
threadX.setPriority(Thread.NORM_PRIORITY + 1);
threadX.start();
..
For threads at the same priority, once one of them starts running, it continues until one of the following happens:
Preemptive or time-slicing context switching, available on some JVMs, also will move threads of same priority in and out of control.
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