Java

OOP GUIDE / WORK

SINGLETABLE CLASS

Topics

• Inferring instance variables.
• Implementing a constructor.
• Implementing instance variables.

SOLUTIONS

1. The instance variables would be:

int numSeats;

double viewQuality;

int height;

2. Code:

public class SingleTable

{

private int seats;

private int height;

private double viewQuality;

public SingleTable(int s, int h, double vq)

{

seats = s;

height = h;

viewQuality = vq;

}

public int getNumSeats()

{

return seats;

}

public int getHeight()

{

return height;

}

public double getViewQuality()

{

return viewQuality;

}

public void setViewQuality(int qual)

{

viewQuality = qual; //might want to have constraints here

}

}

3. Code:

public class TableTester

{

public static void main(String[] args)

{

SingleTable t1 = new SingleTable(4, 74, 60.0);

SingleTable t2 = new SingleTable(8, 74, 70.0);

SingleTable t3 = new SingleTable(12, 76, 75.0);

}

}