public Constraint workPercentage(ConstraintFactory constraintFactory) {
    return constraintFactory.forEach(Employee.class)
            .join(Shift.class, equal(Employee::getName, Shift::getEmployee))
            .groupBy(
                    (employee, shift) -> employee,
                    ConstraintCollectors.sumDuration((employee, shift) -> 
                        Duration.between(shift.getStart(), shift.getEnd()))
                )
            .filter((employee, totalWorkedHours) -> {
                double fullTimeHours = 40.0;
                double desiredHours = employee.getWorkPercentage() * fullTimeHours;
                return totalWorkedHours.toHours() != desiredHours;
            })
            .penalize(HardSoftBigDecimalScore.ONE_HARD, (employee, totalWorkedHours) -> {
                return (int) totalWorkedHours.toHours() - employee.getWorkPercentage() * 40;
            })
            .asConstraint("Employee work percentage not matched");
}

public Constraint workPercentage(ConstraintFactory constraintFactory) {
    return constraintFactory.forEach(Employee.class)
            .join(Shift.class, equal(Employee::getName, Shift::getEmployee))
            .groupBy(
                    (employee, shift) -> employee,
                    ConstraintCollectors.sumDuration((employee, shift) -> 
                        Duration.between(shift.getStart(), shift.getEnd()))
                )
            .filter((employee, totalWorkedHours) -> {
                double fullTimeHours = 40.0;
                double desiredHours = employee.getWorkPercentage() * fullTimeHours;
                return totalWorkedHours.toHours() != desiredHours;
            })
            .penalize(HardSoftBigDecimalScore.ONE_HARD, (employee, totalWorkedHours) -> {
                return (int) totalWorkedHours.toHours() - employee.getWorkPercentage() * 40;
            })
            .asConstraint("Employee work percentage not matched");
}

public Constraint workPercentage(ConstraintFactory constraintFactory) {
    return constraintFactory.forEach(Employee.class)
            .join(Shift.class, equal(Employee::getName, Shift::getEmployee))
            .groupBy(Employee::getName, 
                    ConstraintCollectors.sum(shift -> 
                        Duration.between(shift.getStart(), shift.getEnd()).toHours()))
            // ... rest of constraint
}

public Constraint workPercentage(ConstraintFactory constraintFactory) {
    return constraintFactory.forEach(Employee.class)
            .join(Shift.class, equal(Employee::getName, Shift::getEmployee))
            .groupBy(Employee::getName, 
                    ConstraintCollectors.sum(shift -> 
                        Duration.between(shift.getStart(), shift.getEnd()).toHours()))
            // ... rest of constraint
}

public static Int positiveInts (Int[] n)
{
int noOfPositive = 0;
for(int i = 0; i < n.length; i++){
if( n[i].lessThan(0)) break; else (noOfPositive++)}
return noOfPositive;
}

public static Int positiveInts (Int[] n)
{
int noOfPositive = 0;
for(int i = 0; i < n.length; i++){
if( n[i].lessThan(0)) break; else (noOfPositive++)}
return noOfPositive;
}

Open the text editor TextPad (Start - TextPad 8, with the letter T). Create a class called Demo. Type the following:
// Demo.java
class Demo {
}
.
Save the text in a file called Demo.java. Create a directory on a suitable drive (for example, the C drive) and save the file there. The directory can be called, for example, programming. On the school's computers, the file is saved on the H drive. Create there a directory called programming and the directory ovens in it.
Add the main method to the Demo class. Expand the program like this:

// Demo.java
class Demo {
public static void main (String[] args) {
}
}
"

Open the text editor TextPad (Start - TextPad 8, with the letter T). Create a class called Demo. Type the following:
// Demo.java
class Demo {
}
.
Save the text in a file called Demo.java. Create a directory on a suitable drive (for example, the C drive) and save the file there. The directory can be called, for example, programming. On the school's computers, the file is saved on the H drive. Create there a directory called programming and the directory ovens in it.
Add the main method to the Demo class. Expand the program like this:

// Demo.java
class Demo {
public static void main (String[] args) {
}
}
"