/* Airport class Anderson, Franceschi */ public class Airport { // Instance vari

ID: 3750407 • Letter: #

Question

/* Airport class
Anderson, Franceschi
*/

public class Airport
{
// Instance variables
private String airportCode;
private int gates;

// 1. ***** Add a static class variable *****
// countAirports is an int
// assign an initial value of 0
// Part 1 student code starts here:

// Part 1 student code ends here.

// 2. ***** Modify this method *****
// Default constructor:
// method name: Airport
// return value: none
// parameters: none
// function: sets the airportCode to an empty String
// ***** adds 1 to countAirports class variable
public Airport()
{
airportCode = "";
// Part 2 student code starts here:

// Part 2 student code ends here.
}

// 3. ***** Modify this method *****
// Overloaded constructor:
// method name: Airport
// return value: none
// parameters: a String startAirportCode and an int startGates
// function: calls the setAirportCode method, passing the
// startAirportCode parameter;
// calls the setGates method, passing the startGates parameter
// ***** adds 1 to countAirports class variable
public Airport(String startAirportCode, int startGates)
{
airportCode = startAirportCode;
setGates(startGates);
// Part 3 student code starts here:

// Part 3 student code ends here.
}

// Accessor method for the airportCode instance variable
// method name: getAirportCode
// return value: String
// parameters: none
// function: returns airportCode
public String getAirportCode()
{
return airportCode;
}

// Accessor method for the gates instance variable
// method name: getGates
// return value: int
// parameters: none
// function: returns gates
public int getGates()
{
return gates;
}

// 4. ***** Write this static method *****
// Accessor method for the countAirports class variable
// method name: getCountAirports
// return value: int
// parameters: none
// function: returns countAirports
// Part 4 student code starts here:

// Part 4 student code ends here.

// Mutator method for the airportCode instance variable
// method name: setAirportCode
// return value: void
// parameters: String newAirportCode
// function: assigns airportCode the value of the
// newAirportCode parameter
public void setAirportCode(String newAirportCode)
{
airportCode = newAirportCode;
}

// Mutator method for the gates instance variable
// method name: setGates
// return value: void
// parameters: int newGates
// function: validates the newGates parameter.
// if newGates is greater than or equal to 0,
// sets gates to newGates;
// otherwise, prints an error message to System.err
// and does not change value of gates
public void setGates(int newGates)
{
if (newGates < 0)
{
System.err.println("Gates must be at least 0");
System.err.println("Value of gates unchanged.");
return;
}

gates = newGates;
}

// Part 5 student code ends here.

// Part 6 student code ends here.

} // end of Airport class definition

Explanation / Answer

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Hope you'll get it.

public class Airport
{
// Instance variables
private String airportCode;
private int gates;

// 1. ***** Add a static class variable *****
// countAirports is an int
// assign an initial value of 0
// Part 1 student code starts here:
private static int countAirports=0;

// Part 1 student code ends here.

// Accessor method for the gates instance variable
// method name: getGates
// return value: int
// parameters: none
// function: returns gates
public int getGates()
{
return gates;
}

gates = newGates;
}

// 5. ***** Write this method *****
// method name: toString
// return value: String
// parameters: none
// function: returns a String that contains the airportCode
// and gates
// Part 5 student code starts here:
public String toString()
{
airportCode="IAD";
gates=30;

String gateString = Integer.toString(gates);
String[] arr = new String[2];
arr[0] = airportCode;
arr[1] = gateString;


// returning array of elements
return arr;
}

// Part 5 student code ends here.

// 6. ***** Write this method *****
// method name: equals
// return value: boolean
// parameter: Airport object
// function: returns true if airportCode
// and gates in this object
// are equal to those in the parameter object;
// returns false otherwise
// Part 6 student code starts here:
public boolean equals(Object Airport)
{
if(airportCode.equals(Airport) && gates == Airport)
return true;
else
return false;
}

// Part 6 student code ends here.

} // end of Airport class definition

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/* Airport class Anderson, Franceschi */ public class Airport { // 1. ***** Defi

/* Airport class Anderson, Franceschi */ public class Airport { // Instance vari

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/* Airport class Anderson, Franceschi */ public class Airport { // Instance vari

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