PRG 421 Week 1 Individual Assignment Singleton Pattern Program

Description

Write a Java program (non-GUI preferred) to demonstrate the Singleton pattern.
The key parts of the singleton pattern are:
A private static variable to store the single instance called the singleton
A public static method for callers to get a reference to the instance
A private constructor so no callers can instantiate the object directly
Using these key parts, write a Java program that will allow a user of the program to assign only one runner to each of the 8 lanes of running track in a field.
Include a brief documentation (in the code or in a separate document) to explain the input (if any), processing and output of the program.”
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The solution includes a zip file.
Attachments [Move over files to preview content of those files]
PRG421_Week_1_Individual_Assignment.zip (93.26 KB)
java code
Runners.java
Netbeans project
PRG421_Week_1_Singleton_Pattern
build
classes
.netbeans_automatic_build
.netbeans_update_resources
Runners.class
build.xml
manifest.mf
nbproject
build-impl.xml
genfiles.properties
private
private.properties
project.properties
project.xml
src
Runners.java
test
PRG421-Week-1-Individual-Assignment-Screenshot.jpg
Preview Runners.java
xxxxxx xxxxxx xxxxxxx xxxxxxxxxxx() {
xx (xxxxxxxx == xxxx) {
xxxxxxxx = xxx xxxxxxx();
}
xxxxxx xxxxxxxx;
}
//make the constructor private so that this class cannot be instantiated private Runners() { availableLanes = new HashSet
(); availableLanes.add(1); availableLanes.add(2); availableLanes.add(3); availableLanes.add(4); availableLanes.add(5); availableLanes.add(6); availableLanes.add(7);
xxxxxxxxxxxxxx.xxx(8);
}
xxxxxx xxxxxxx xxxxxxxx(xxxxxx xxxx, xxx xxxx) {
xx (xxxxxxxxxxxxxx.xxxxxxxx(xxxx)) {
xxxxxx.xxx.xxxxxxx(xxxx + ” (xxxx: ” + xxxx + “)”);
Preview Runners.java
xxxxxx xxxxxx xxxxxxx xxxxxxxxxxx() {
xx (xxxxxxxx == xxxx) {
xxxxxxxx = xxx xxxxxxx();
}
xxxxxx xxxxxxxx;
}
//make the constructor private so that this class cannot be instantiated private Runners() { availableLanes = new HashSet
(); availableLanes.add(1); availableLanes.add(2); availableLanes.add(3); availableLanes.add(4); availableLanes.add(5); availableLanes.add(6); availableLanes.add(7);
xxxxxxxxxxxxxx.xxx(8);
}
xxxxxx xxxxxxx xxxxxxxx(xxxxxx xxxx, xxx xxxx) {
xx (xxxxxxxxxxxxxx.xxxxxxxx(xxxx)) {
xxxxxx.xxx.xxxxxxx(xxxx + ” (xxxx: ” + xxxx + “)”);
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PRG 421 Week 2 Individual Assignment ArrayList Program – $15.00
PRG 421 Week 3 Individual Assignment Iterator Program – $15.00
PRG 421 Week 4 Individual Assignment Java Data Base Connectivity – $19.00
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