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An array of length 128 is subscripted by integers from 0 to 127.
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Subscripts are range checked in runtime and so vec[-1] and vec[128] will generate exceptions.
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Array length can be extracted via the length instance variable, e.g.
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int len = vec.length will assign len = 128.
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Arrays can have dynamic sizing (a fixed size determined at runtime)
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int sizeofarray = 67;
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int vec[] = new int[sizeofarray];
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Multidimensional arrays are arrays of arrays
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char icon[][] = new char[16][16]
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These arrays can be "ragged":
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int graph[][] = new int[2][];
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graph[0][] = new int[4];
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graph[1][] = new int[7];
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