Using Inheritance and Polymorphism in Program
Using Inheritance and Polymorphism in Java Program, Calculating worker monthly Salary, Gross rate, rate tax and Making records.
Java Code:
public class TaxableWorker {
String
name;
double payRate=12.50;
double taxRate=0.25;
TaxableWorker(String
n, double Pr, double Tr){
name=n;
payRate=Pr;
taxRate=Tr;
}
public void setPayRate(double Pr){
payRate=Pr;
}
public void setTaxRate(double Tr){
taxRate=Tr;
}
public void setName(String n){
name=n;
}
public String getName(){
return name;
}
public double getPayRate(){
return payRate;
}
public double getTaxRate(){
return taxRate;
}
public String
ONEworkerInfo(){
return String.format("%s: %s \n%s:
%s \n%s: %s",
"NAME", getName(),
"hourly pay
rate",getPayRate(),
"federal tax
rate",
getTaxRate() );
}
public double grossPay(int HW){
double a=(HW*payRate);
return a;
}
public double taxWithheld(double GP){
double b=(GP * taxRate);
return b;
}
}
public class StateTaxableWorker extends TaxableWorker{
String
StateName;
double StateTaxRate=0.05;
StateTaxableWorker(String
n, double Pr, double Tr, String Sn, double St) {
super(n, Pr, Tr);
StateName=Sn;
StateTaxRate=St;
// TODO Auto-generated
constructor stub
}
public void setStateTaxRate(double St){
StateTaxRate=St;
}
public double getStateTaxRate(){
return StateTaxRate;
}
public void setStateName(String
Sn){
StateName=Sn;
}
public String
getStateName(){
return StateName;
}
@Override
public String
ONEworkerInfo(){
return String.format("%s: %s \n%s:
%s \n%s: %s \n%s: %s \n%s: %s ",
"NAME", getName(),
"hourly pay
rate",
getPayRate(),
"federal tax
rate ", getTaxRate(),
"StateName",getStateName(),
"StateTaxRate",getStateTaxRate() );
}
@Override
public double taxWithheld(double GP){
double b=((GP * taxRate) + (GP * StateTaxRate));
return b;
}
}
public class LocalTaxableWorker extends StateTaxableWorker {
String cityName;
double cityTax=0.025;
LocalTaxableWorker(String
n, double Pr, double Tr, String Sn, double St, String CN, double CT) {
super(n, Pr, Tr, Sn, St);
cityName=CN;
cityTax=CT;
// TODO Auto-generated
constructor stub
}
public void setCityName(String
CT){
cityName=CT;
}
public String
getCityName(){
return cityName;
}
public void setCityTax(double CN){
cityTax=CN;
}
public double getCityTax(){
return cityTax;
}
@Override
public String
ONEworkerInfo(){
return String.format("%s: %s \n%s:
%s \n%s: %s \n%s: %s \n%s: %s \n%s: %s \n%s: %s ",
"NAME", getName(),
"hourly pay
rate",getPayRate(),
"federal tax
rate ", getTaxRate(),
"StateName",getStateName(),
"StateTaxRate",getStateTaxRate(),
"City
Name",getCityName(),
"City Tax
",
getCityTax() );
}
@Override
public double taxWithheld(double GP){
double b=((GP * taxRate) + (GP * StateTaxRate) + (GP * cityTax));
return b;
}
}
public class test {
/**
* @param args
*/
StateTaxableWorker
STW=new StateTaxableWorker("saadk", 120, 60, "Sname", 90);
LocalTaxableWorker LTW=new LocalTaxableWorker("hello", 40, 50, "Sname", 550, "Cname", 0);
TaxableWorker
TW=new TaxableWorker("saad", 10, 40);
public void display(){
System.out.println("information
about the worker:");
System.out.println(TW.ONEworkerInfo());
System.out.print("gross
Pay:");
System.out.println(TW.grossPay(4));
System.out.print("total amount
of tax withheld for the worker:");
System.out.println(TW.taxWithheld(100));
TaxableWorker[]
Tw=new TaxableWorker[2];
Tw[0]=STW;
Tw[1]=LTW;
for (TaxableWorker ab :
Tw){
System.out.println(ab);
if(ab instanceof StateTaxableWorker){
StateTaxableWorker
T =(StateTaxableWorker) ab;
System.out.println(T.ONEworkerInfo());
System.out.print("tax on state
:");
System.out.println(T.taxWithheld(500));
}
else
if(ab instanceof LocalTaxableWorker){
LocalTaxableWorker B =(LocalTaxableWorker) ab;
System.out.println(B.ONEworkerInfo());
System.out.print("tax on city
:");
System.out.println(B.taxWithheld(500));
}
}
}
public static void main(String[] args)
{
// TODO Auto-generated
method stub
test
run=new test();
run.display();
}
}
Screenshot:
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