Rewrite arrays using collections
- by owca
I have a task, which I was able to do with the use of simplest methods - arrays. Now I'd like to go further and redo it using some more complicated java features like collections, but I've never used anything more complicated than 2d matrix. What should I look at and how to start with it. Should Tower become a Collection ? And here's the task :
We have two classes - Tower and Block. Towers are built from Blocks.
Ande here's sample code for testing:
Block k1=new Block("yellow",1,5,4);
Block k2=new Block("blue",2,2,6);
Block k3=new Block("green",3,4,2);
Block k4=new Block("yellow",1,5,4);
Tower tower=new Tower();
tower.add(k1,k2,k3);
"Added 3 blocks."
System.out.println(tower);
"block: green, base: 4cm x 3cm, thicknes: 2 cm
block: blue, base: 6cm x 2cm, thicknes: 2 cm
block: yellow, base: 5cm x 4cm, thicknes: 1 cm"
tower.add(k2);
"Tower already contains this block."
tower.add(k4);
"Added 1 block."
System.out.println(tower);
"block: green, base: 4cm x 3cm, thicknes: 2 cm
block: blue, base: 6cm x 2cm, thicknes: 2 cm
block: yellow, base: 5cm x 4cm, thicknes: 1 cm
block: yellow, base: 5cm x 4cm, thicknes: 1 cm"
tower.delete(k1);
"Deleted 1 block"
tower.delete(k1);
"Block not in tower"
System.out.println(tower);
"block: blue, base: 6cm x 2cm, thicknes: 2 cm
block: yellow, base: 5cm x 4cm, thicknes: 1 cm
block: yellow, base: 5cm x 4cm, thicknes: 1 cm"
Let's say I will treat Tower as a collection of blocks. How to perform search for specific block among whole collection ? Or should I use other interface ?
