Multiple Threads concurrently running in JAVA

Question

This question is regarding Multithreading in Java.

Multithreading is for the maximum utilisation of cpu. According to what I read, only one thread can be executed at a time. I believe that it it true for single processor system. Number of threads that can be executed simultaneously depends on what factors??

For Instance, If I am using 4 core processor, how many threads can be run concurrently??

Thanks in Advance.

possible duplicate of Maximum number of threads than can run concurrently in java on a CPU — tucuxi
– tucuxi, Commented Apr 22, 2015 at 10:45
According to what I read... I believe that it it true for single processor Your belief is correct: What you read is out-of-date. It was true when a computer had only one CPU, but today, even a smart phone can have more than one CPU, and a mainframe can have more than a hundred CPUs. The max number of concurrent threads is equal to the number of CPUs. (Note: a hyperthreaded core can count as more than one virtual CPU). — Solomon Slow
– Solomon Slow, Commented Apr 22, 2015 at 13:43

Kayaman · Accepted Answer · 2015-04-22 10:11:39Z

1

For a 4-core processor 4 threads, or 8 if there's HyperThreading in the processor.

HyperThreading allows a core that's not running at 100% capacity to run 2 threads on a single core.

edited Apr 22, 2015 at 10:11

answered Apr 22, 2015 at 10:03

Kayaman

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