Answer 1

abstract class Employee
{
abstract int getSalary();
}
class Developer extends Employee
{
private int salary;
public Developer(int s)
{
salary = s;
} int getSalary()
{
return salary;
} }
class Driver extends Employee
{
private int salary;
public Driver(int t)
{
salary = t;
}
int getSalary()
{
return salary;
} }
class abstract0
{ public static void main(String[] args)
{
Developer d1 = new Developer(5000);
Driver d2 = new Driver(3000); int a, b;
a = d1.getSalary();
b = d2.getSalary(); System.out.println("Salary of developer : " + a);
System.out.println("Salary of driver : " + b);
}
}