Question: Need help with the following assignment: Objective Learn how Inheritance and Polymorphism works in Java. Instructions Following classes are present in object-oriented software store:IOpenSourceSoftware InterfaceHas
Need help with the following assignment: Objective
Learn how Inheritance and Polymorphism works in Java.
Instructions
Following classes are present in object-oriented software store:IOpenSourceSoftware InterfaceHas methods
getDeveloperCount
getPopularityScore
ICommercialSoftware InterfaceHas methods
getFeatureCount
getPrice
AbstractLinuxSoftware Abstract Class
Has method runOnAndroid
Has method - getLinuxDescription
AbstractWindowsSoftware Abstract Class
Has method runOnSurface
Has method - getWindowsDescription
MSExcel
PremiumMSExcel
ApacheSpark
LightApacheSpark
Identify all the variables and methods required for different types of softwares and use them in your Java classes. If all required variables and methods are not included, MARKS will be deducted.
Use following inheritance hierarchy.
MSExcel implements ICommercialSoftware and extends AbstractWindowsSoftware
MSExcel
getPrice method returns price multiplying feature with 5
ApacheSpark implements contracts defined in IOpenSourceSoftware and extends AbstractLinuxSoftware
getPopularityScore returns some hard coded integer
Write a specialized PremiumExcel class with following behaviors
Inherits MSExcel
getPrice method returns price multiplying feature with 10
Write a specialized LightApacheSpark class with following behaviors
Inherits ApacheSpark
Has twice the popularityScore as ApacheSpark
getLinuxDescription() of LightApacheSpark class should return (Identify variables and methods required using the following snippet):
Software Name: Light Apache Spark
Popularity Score: 200
Developer Count: 20
Time Stamp:
getWindowsDescription() of PremiumMSExcel class should return (Identify variables and methods required using the following snippet):
Software Name: Premium MSExcel
Feature Count: 10
Price: 100
Time Stamp:
Any changes to a base class should get reflected accordingly. (Example: Change in price for MSExcel changes the price of PremiumMSExcel).
Create TestSoftware.java file to test your code and put appropriate testing code for each object. Files: OpenSourceSoftware.java
/**
*
*/
package softwarestore;
/**
* @author chokshi
*
*/
public interface IOpenSourceSoftware {
int getDeveloperCount();
int getPopularityScore();
} CommercialSoftware.java
/**
*
*/
package softwarestore;
/**
* @author chokshi
*
*/
public interface ICommercialSoftware {
int getFeatureCount();
double getPrice();
}
AbstractLinuxSoftware.java
/**
*
*/
package softwarestore;
/**
* @author chokshi
*
*/
public abstract class AbstractLinuxSoftware implements
IOpenSourceSoftware{
private int developerCount;
private int popularityScore;
public void setDeveloperCount(int developerCount) {
this.developerCount = developerCount;
}
public void setPopularityScore(int popularityScore) {
this.popularityScore = popularityScore;
}
@Override
public int getDeveloperCount() {
// TODO Auto-generated method stub
return 0;
}
@Override
public int getPopularityScore() {
// TODO Auto-generated method stub
return 0;
}
}
AbstractWindowsSoftware.java
/**
*
*/
package softwarestore;
/**
* @author chokshi
*
*/
public abstract class AbstractWindowsSoftware implements
ICommercialSoftware {
private int featureCount;
/**
* @param featureCount the featureCount to set
*/
public void setFeatureCount(int featureCount) {
this.featureCount = featureCount;
}
/* (non-Javadoc)
* @see softwarestore.ICommercialSoftware#getFeatureCount()
*/
@Override
public int getFeatureCount() {
return featureCount;
}
/* (non-Javadoc)
* @see softwarestore.ICommercialSoftware#getPrice()
*/
@Override
public double getPrice() {
// TODO Auto-generated method stub
return featureCount * 20;
}
} MsExcel.java
/**
*
*/
package softwarestore;
/**
* @author chokshi
*
*/
public class MSExcel extends AbstractWindowsSoftware implements
ICommercialSoftware{
public MSExcel() {
this.setFeatureCount(300);
}
/* (non-Javadoc)
* @see softwarestore.AbstractWindowsSoftware#getPrice()
*/
@Override
public double getPrice() {
// TODO Auto-generated method stub
return this.getFeatureCount()*5;
}
} PremiumExcel.java
/**
*
*/
package softwarestore;
/**
* @author chokshi
*
*/
public class PremiumExcel extends MSExcel implements ICommercialSoftware {
/**
*
*/
public PremiumExcel() {
// TODO Auto-generated constructor stub
this.setFeatureCount(600);
}
/* (non-Javadoc)
* @see softwarestore.ICommercialSoftware#getPrice()
*/
@Override
public double getPrice() {
//
}
}
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