PRG 421 Week 5 Individual Assignment Concurrent Programming

Description

Write a Java program (non-GUI preferred) that has a method named atomic().
Demonstrate in the program how two threads can, sometimes, invoke atomic() concurrently.
Create a second version of the program in which the two threads cannot invoke atomic concurrently.
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The solution includes a zip file.
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PRG_421_Week_5_Individual_Assignment.zip (206.44 KB)
java code
program1
ConcurrentProgrammingAtomic1.java
program2
ConcurrentProgrammingAtomic2.java
Netbeans project
PRG421_Week_5
build
classes
.netbeans_automatic_build
.netbeans_update_resources
part1
part2
program1
ConcurrentProgrammingAtomic1.class
Counter.class
IncrementerThread.class
program2
ConcurrentProgrammingAtomic2.class
Counter.class
IncrementerThread.class
build.xml
manifest.mf
nbproject
build-impl.xml
genfiles.properties
private
private.properties
private.xml
project.properties
project.xml
src
program1
ConcurrentProgrammingAtomic1.java
program2
ConcurrentProgrammingAtomic2.java
PRG421-Week-5-Individual-Assignment-Screenshot-1.png
PRG421-Week-5-Individual-Assignment-Screenshot-2.png
Preview ConcurrentProgrammingAtomic1.java
xxxxxxxxxxxxxxxxx xx3 = xxx xxxxxxxxxxxxxxxxx(xxxxxxx);
xxxxxxxxxxxxxxxxx xx4 = xxx xxxxxxxxxxxxxxxxx(xxxxxxx);
//xxx xxxxxxxxx xxxxx xxxxxxxx xxxx xxxxxxx xxx xxxxxx.
//xxxxx xxxxxxx xxxxxx xxxxxxxxx xxx xxx xxxxxx xxxxxx,
//but do not always work. 😉
it1.start();
it2.start();
it3.start();
it4.start();

//The following is what locks the program to increment correctly.
try {
it1.join();
it2.join();
it3.join();
it4.join();
} xxxxx (xxxxxxxxxxxxxxxxxxxx xxxxxx) {
}
//xxx xxxxxxxxx xxxxxxx xxx xxxxxxxx xxxxxxx.
xxxxxx.xxx.xxxxxxx(“x xxxxx xx ” + xxxxxxx.xxxxxxxx() + ” xxxxxxxxxx xxxxxxxxx.”);
Preview ConcurrentProgrammingAtomic2.java
xxxxxxxxxxxxxxxxx xx1 = xxx xxxxxxxxxxxxxxxxx(xxxxxxx);
xxxxxxxxxxxxxxxxx xx2 = xxx xxxxxxxxxxxxxxxxx(xxxxxxx);
xxxxxxxxxxxxxxxxx xx3 = xxx xxxxxxxxxxxxxxxxx(xxxxxxx);
xxxxxxxxxxxxxxxxx xx4 = xxx xxxxxxxxxxxxxxxxx(xxxxxxx);
//The following group initates each threads run method. //These methods SHOULD increment the the atomic method, //but do not always work. 😉 it1.start(); it2.start(); it3.start(); it4.start();
//The following is what locks the program to increment correctly. try { it1.join();
xx2.xxxx();
xx3.xxxx();
xx4.xxxx();
} xxxxx (xxxxxxxxxxxxxxxxxxxx xxxxxx) {
}
Preview ConcurrentProgrammingAtomic1.java
xxxxxxxxxxxxxxxxx xx3 = xxx xxxxxxxxxxxxxxxxx(xxxxxxx);
xxxxxxxxxxxxxxxxx xx4 = xxx xxxxxxxxxxxxxxxxx(xxxxxxx);
//xxx xxxxxxxxx xxxxx xxxxxxxx xxxx xxxxxxx xxx xxxxxx.
//xxxxx xxxxxxx xxxxxx xxxxxxxxx xxx xxx xxxxxx xxxxxx,
//but do not always work. 😉
it1.start();
it2.start();
it3.start();
it4.start();

//The following is what locks the program to increment correctly.
try {
it1.join();
it2.join();
it3.join();
it4.join();
} xxxxx (xxxxxxxxxxxxxxxxxxxx xxxxxx) {
}
//xxx xxxxxxxxx xxxxxxx xxx xxxxxxxx xxxxxxx.
xxxxxx.xxx.xxxxxxx(“x xxxxx xx ” + xxxxxxx.xxxxxxxx() + ” xxxxxxxxxx xxxxxxxxx.”);
Preview ConcurrentProgrammingAtomic2.java
xxxxxxxxxxxxxxxxx xx1 = xxx xxxxxxxxxxxxxxxxx(xxxxxxx);
xxxxxxxxxxxxxxxxx xx2 = xxx xxxxxxxxxxxxxxxxx(xxxxxxx);
xxxxxxxxxxxxxxxxx xx3 = xxx xxxxxxxxxxxxxxxxx(xxxxxxx);
xxxxxxxxxxxxxxxxx xx4 = xxx xxxxxxxxxxxxxxxxx(xxxxxxx);
//The following group initates each threads run method. //These methods SHOULD increment the the atomic method, //but do not always work. 😉 it1.start(); it2.start(); it3.start(); it4.start();
//The following is what locks the program to increment correctly. try { it1.join();
xx2.xxxx();
xx3.xxxx();
xx4.xxxx();
} xxxxx (xxxxxxxxxxxxxxxxxxxx xxxxxx) {
}
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