Java

OOP GUIDE / WORK

BOTTLE CLASS 3 SOLUTIONS

TASK – PART 1 – CODE ANALYSIS

ARRAY 1 CODE

Bottle[] bot = new Bottle[10];

for (int i=0; i<bot.length; i++)

{

if (Math.random() < 0.5)

bot[i] = new Bottle(500, "Silver");

else

bot[i] = new Bottle(500, "Blue");

}

ARRAY 1 DESCRIPTION

The array bot contains 10 bottles. All are 500mL in volume. There is a 50% chance that a bottle is Silver and a 50% chance that it is Blue. All bottles are empty.

ARRAY 2 CODE

Bottle[] boo = {new Bottle(500, "Red"), new Bottle(250, "Green"),

new Bottle(355, "Blue"), new Bottle(600, "Pink"),

new Bottle(400, "Yellow"), new Bottle(240, "Teal")};

ARRAY 2 DESCRIPTION

The array boo contains 6 bottles. They are all different volumes and colours. They are all empty.

ARRAY 3 CODE

Bottle[] barr = new Bottle[100];

for (int i=0; i<barr.length; i++)

{

int v = ((int)(Math.random() * 3 + 1)) * 250;

barr[i] = new Bottle(v, "Clear");

}

ARRAY 3 DESCRIPTION

The array barr contains 100 bottles. All bottles are clear. There are three sizes of bottles: 250mL, 500mL and 750mL and the size is chosen randomly. All bottles are empty.

ARRAY 4 CODE

Bottle[] botarr = new Bottle[50];

for (int i=0; i<botarr.length; i++)

{

botarr[i] = new Bottle(500, "Green");

botarr[i].addLiquid("water", 500);

}

ARRAY 4 DESCRIPTION

The array botarr contains 50 bottles. All bottles are 500mL in size, green and filled with water.

ARRAY 5 CODE

Bottle[] drinks = new Bottle[20];

for (int i=0; i<drinks.length; i++)

{

drinks[i] = new Bottle(500, "Blue");

drinks[i].addLiquid("lemonade", 250);

drinks[i].addLiquid("iced tea", 250);

}

ARRAY 5 DESCRIPTION

The drinks array contains 20 blue bottles that are all 500mL in size. They all contain half lemonade and half iced tea. (Fun fact: This drinks is called an Arnold Palmer after the golfer who used to order it regularly).