Description
Problem 1
(a) Write a Java program to create 128 threads. Each of these threads should
print it’s thread ID. Use the Thread.join function to block the main
thread until all of the 128 threads finish execution.
(b) Modify the code written in problem (a) such that each thread increments
a single global counter variable common to all the threads. Initial value
of the counter variable should be set to 0. Print the value of this counter
variable after all of the 128 threads finish execution.
Submit a well-commented .java file. You can use the server
ecen5033.colorado.edu to test your solution.
Problem 2
Modify the program written in problem 1 such that the logic for incrementing
the counter variable is protected by a lock or a synchronized block or method.
Explain briefly (comment in your .java file is sufficient) how you ensure mutual
exclusion for accesses to the shared variable.
Submit a well-commented .java file. You can use the server
ecen5033.colorado.edu to test your solution.
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