Association

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Objectives
Steps
Problem Statement
Hints
Solution
Test Code

Objectives

Java generics
Association concepts
Java packages
Writing Test Code

Steps

Take a shot at writing the program after viewing the problem statement
When desired, look at the hints
When desired, look at the solution

Also see as needed Generics-Just-Variables

Problem Statement

Concept

Association is a wonderful utility helper class that is useful when coding data structures.

Association is a simple key-value object:

Association
	key
	value

The instance variables (ivar) are "key" and "value".

Coding requirements:

Write a class that uses a generic type parameter "K" and "V" specified on the class that specifies the data types for ivars "key" and "value", respectively
Write a constructor that receives values to set all ivars
Write a getter for each ivar

Hints

Association

Solution

Here is code with explanations

Test Code

Testing Problem Statement

Write code to test the model. If you get stumped, look at test code solution.

Test Code Solution

First, try to write test code yourself. Then review and compare the following for possible ideas.

Here is support code that is needed for the test code.

Note that this support code is just one example of a minimal testing framework. Feel free to build your own.

Prepare Project

Download the support code from above
Build up your project directory using the given package names, e.g. if a Java file has this at the top of the file "package foo.model;" that means the given file should be placed in directory "foo/model"
The directories and files should match the listing below

Directory and Files Listing

assoc\model\Association.java
assoc\test\AssociationSmokeTest.java
assoc\test\AssociationTest.java
testutil\AbstractTest.java
testutil\Employee.java

Compile

Here are the console commands to compile all project files (you may also use your favorite IDE):

javac -cp "." assoc/model/*.java
javac -cp "." assoc/test/*.java
javac -cp "." testutil/*.java

Run Tests

Here are the console command to run the tests (you may also use your favorite IDE):

java -cp "." assoc/test/AssociationTest

Object Oriented Programming

Association

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