Review java - Array

2019-07-10 113 words One minute

Declaring an array

Both are allow

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string argc[];
string[] argc;

Int array

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int[] nums = new int[7];
nums[0] = 10;

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Rabbit[] racers = new Rabbit[10];//10 empty rabbit array;
racers[0] = new Rabbit("B","F");

arraycopy()

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System.arraycopy(nums, 0, nums, 0, nums.length);

Array vs ArrayList

An array needs to know its size at the time of creation, arrayList does not.
To assign an object in array you must assign it to a specific index.
Array use array syntax ([]).
ArrayList is parameterized. ArrayList<string>

ArrayList

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ArrayList<Flower> flowerList = new ArrayList<Flower>();// <- ArrayList constructor
Flower f = new Flower();
Flower m = new Flower();

flowerList.add(f);
flowerList.add(m);