Java multithreading and concurrent programming
multi-Progress
The program is no longer performed sequentially, alternately up and down two while loop operation
Multithreading can only open a program, but the program is run several functions can be performed alternately
Multiple processes can open several programs
Start method will automatically call the run method to the new process, the underlying use JNI to achieve
Start will be triggered automatically run method, which is a Thread own mechanism, it is equivalent to recognize start and run the two words
The class must implement Runnable can start to rely Thread
Multi-threaded operating rules
If you want to start, and then only new objects out of a thread
If the program inherits the Thread, the other can not inherit the class (single inheritance), if in the future the program to achieve what functions need to inherit another class, more trouble
Thread must use static variables to achieve shared variables, Runnable ordinary variables shared variables can be achieved
Multithreading information sharing
MPI parallel library is a C / C ++ library Parallel
Multithreading management
