POLYMORPHISM
a.
Employee.java
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package praktikumenam;
/**
*
* @author arhiday
*/
public class Employee
{
private String name;
private String address;
private int number;
public Employee(String name, String address, int number)
{
System.out.println("Constructing an Employee");
this.name = name;
this.address = address;
this.number = number;
}
public void mailCheck()
{
System.out.println("Mailing a check to " + this.name
+ "
" + this.address);
}
public String toString()
{
return name + "
" + address + "
" + number;
}
public String getName()
{
return name;
}
public String getAddress()
{
return address;
}
public void setAddress(String newAddress)
{
address = newAddress;
}
public int getNumber()
{
return number;
}
}
b.
Salary.java
/*
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package praktikumenam;
/**
*
* @author arhiday
*/
public class Employee
{
private String name;
private String address;
private int number;
public Employee(String name, String address, int number)
{
System.out.println("Constructing an Employee");
this.name = name;
this.address = address;
this.number = number;
}
public void mailCheck()
{
System.out.println("Mailing a check to " + this.name
+ "
" + this.address);
}
public String toString()
{
return name + "
" + address + "
" + number;
}
public String getName()
{
return name;
}
public String getAddress()
{
return address;
}
public void setAddress(String newAddress)
{
address = newAddress;
}
public int getNumber()
{
return number;
}
}
c.
VirtualDemo.java
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package praktikumenam;
/**
*
* @author arhiday
*/
/*
File name : VirtualDemo.java */
public class VirtualDemo
{
public static void main(String [] args)
{
Salary s = new Salary("Mohd Mohtashim", "Ambehta, UP",
3, 3600.00);
Employee e = new Salary("John Adams", "Boston,
MA",
2, 2400.00);
System.out.println("Call mailCheck using Salary
reference --");
s.mailCheck();
System.out.println("\n Call mailCheck using Employee
reference--");
e.mailCheck();
}
}
INHERITANCE
a.
Parent.java
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package praktikumenam;
/**
*
* @author arhiday
*/
public class Parent
{
public String abc=null;
public String xyz=null;
public void printOutput()
{
System.out.println("Output of Inheritance :"+abc);
System.out.println("Output of Second Inheritance :"+xyz);
}
}
b.
Child.java
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package praktikumenam;
/**
*
* @author arhiday
*/
public class Child extends Parent
{
public void parentMethod()
{
abc="This is inheritance java program";
xyz="This is child class where extends used";
printOutput();
}
public static void main(String[] args)
{
Child ic=new Child();
ic.parentMethod();
}
}
