Create an abstract Division class with fields for a company\'s division name and

Question

Create an abstract Division class with fields for a company's division name and account number, and an abstract display() method that will be defined in the subclasses. Use a constructor in the superclass that requires values for both fields. Create two subclasses named InternationalDivision andDomesticDivision. The InternationalDivision class includes a field for the country in which the division is located, a field for the language spoken, and a constructor that requires all fields when created. The DomesticDivision class include a field for the state in which the division is located and a constructor that requires all fields when created. Write an application named UseDivision that creates two instances of each of these concrete classes (4 total instances). Save the files as:
Division, InternationalDivision, DomesticDivision, and UseDivision.

Please write in the simplest form of java.

Explanation / Answer

public abstract class Division {

//abstract class has method names declared in it but method body is not defined unless its a constructor.

// you can see Division(String divisionName, String accountNumber) is a constructor so its defined. Its body is there.

// where as display() method has no body. It is just declared.

protected String divisionName;

//declaring a String variable of name divisionName

protected String accountNumber;

//declaring a String variable of name accountNumber

//Parameterized constructor

public Division(String divisionName, String accountNumber) {

// super is callled to inherit the properties of parent class (if any). here there is no parent of Division class

super();

this.divisionName = divisionName;

this.accountNumber = accountNumber;

}

// declaring the display method.

//this is done so that class extending the Division class will be forced to define the message body of this method.

abstract String display();

}

//second class is InternationalDivision which extends the Division class

// in other terms, Division class is parent class of InternationalDivision class

public class InternationalDivision extends Division{

//declaring a String variable named countryName

private String countryName;

//declaring a String variable named languageSpoken

private String languageSpoken;

//parameterized constructor

public InternationalDivision(String divisionName, String accountNumber,String countryName, String languageSpoken) {

// it takes divisionName and accountNumber from the parent class. These fields are not defined here but just

// because InternationDivision is child of Division class, it can use these fields.

super(divisionName, accountNumber);

this.countryName = countryName;

this.languageSpoken = languageSpoken;

}

//Display method is defined here. If you do not, it ll show error because this class extends the Division class.

//Override annotation is used because, this method is declared in the abstract class Division. And we are defining it here.

// In other words we are overriding the definition of the definition method

//the return type of the method is String.

// This string ll combine all the details into one String and send it to main method to print it.

//anything inside " " double inverted commas is plain text. it can be anything. and rest is the fields declared before.

@Override

public String display() {

return " Division Name= " + divisionName +" Account Number= "

+ accountNumber+ " Country Name= " + countryName

+ " Language Spoken=" + languageSpoken ;

}

}

//third class is DomesticDivision which extends the Division class

// in other terms, Division class is parent class of DomesticDivision class

public class DomesticDivision extends Division {

//declaring a String type variable named stateName

private String stateName;

//parameterized constructor

// it takes divisionName and accountNumber from the parent class. These fields are not defined here but just

// because DomesticDivision is child of Division class, it can use these fields.

public DomesticDivision(String divisionName, String accountNumber,

String stateName) {

super(divisionName, accountNumber);

this.stateName = stateName;

}

//Display method is defined here. If you do not, it ll show error because this class extends the Division class.

//Override annotation is used because, this method is declared in the abstract class Division. And we are defining it here.

// In other words we are overriding the definition of the definition method

//the return type of the method is String.

// This string ll combine all the details into one String and send it to main method to print it.

//anything inside " " double inverted commas is plain text. it can be anything. and rest is the fields declared before.

@Override

public String display() {

return " Division Name= " + divisionName +" Account Number= "

+ accountNumber+ " State Name= " + stateName ;

}

}

//this is the fourth class containing the main method

// main is the method which is run very first when the code runs

public class UseDivision {

public static void main(String[] args) {

//making objects of DomesticDivision named domestic1 and domestic2 with our data.

//where first field is divisionname= "North Divsion"

//second field is accountNumber = "123345"

//third field is stateName = "WashingtonDC"

DomesticDivision domestic1 = new DomesticDivision("North Divison", "123345", "WashingtonDC");

// similarly it is done for domestic2

DomesticDivision domestic2 = new DomesticDivision("South Division", "45678", "New York");

System.out.println(" Printing Domestic division results");

// calling the display method described in DomesticDivision class which ll return the String containing all the above details

System.out.println(domestic1.display());

// Same is done for second object domestic2 of DomesticDivision class

System.out.println(domestic2.display());

//Similarly, 2 objects named international1 and international2 are made of InternationalDivision class

// where first field is divisionName

// second field is accountNumber

//third field is countryName

// fourth field is language spoken

//Important to tell you that the sequence is important. if you replace the sequence, feilds ll be interchanged. which will make your output go wrong.

InternationalDivision international1 = new InternationalDivision("East Division", "234342342", "Germany", "german");

InternationalDivision international2 = new InternationalDivision("West Division", "453453425", "United States of America", "English");

System.out.println(" Printing International Division results");

//calliing the display method defined in InternationalDivision class

System.out.println(international1.display());

System.out.println(international2.display());

}

}

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