// Fig. 10.17: PayrollSystemTest.java
// Employee hierarchy test program.
import java.text.DecimalFormat;
import javax.swing.JOptionPane;

public class PayrollSystemTest {

  public static void main( String[] args )
  {
    DecimalFormat twoDigits = new DecimalFormat( "0.00" );

    // create Employee array
    Employee employees[] = new Employee[ 4 ];

    // initialize array with Employees
    employees[ 0 ] = new SalariedEmployee( "John", "Smith",
        "111-11-1111", 800.00 );
    employees[ 1 ] = new CommissionEmployee( "Sue", "Jones",
        "222-22-2222", 10000, .06 );
    employees[ 2 ] = new BasePlusCommissionEmployee( "Bob", "Lewis",
        "333-33-3333", 5000, .04, 300 );
    employees[ 3 ] = new HourlyEmployee( "Karen", "Price",
        "444-44-4444", 16.75, 40 );

    String output = "";

    // generically process each element in array employees
    for ( int i = 0; i < employees.length; i++ ) {
      output += employees[ i ].toString();

      // determine whether element is a BasePlusCommissionEmployee
      if ( employees[ i ] instanceof BasePlusCommissionEmployee ) {

        // downcast Employee reference to
        // BasePlusCommissionEmployee reference
        BasePlusCommissionEmployee currentEmployee =
            ( BasePlusCommissionEmployee ) employees[ i ];

        double oldBaseSalary = currentEmployee.getBaseSalary();
        output += "\nold base salary: $" + oldBaseSalary;

        currentEmployee.setBaseSalary( 1.10 * oldBaseSalary );
        output += "\nnew base salary with 10% increase is: $" +
                  currentEmployee.getBaseSalary();

      } // end if

      output += "\nearned $" + employees[ i ].earnings() + "\n";

    } // end for

    // get type name of each object in employees array
    for ( int j = 0; j < employees.length; j++ )
      output += "\nEmployee " + j + " is a " +
      employees[ j ].getClass().getName();

    JOptionPane.showMessageDialog( null, output );  // display output
    System.exit( 0 );

  } // end main

} // end class PayrollSystemTest