Java Utililty Methods Array Size Get

List of utility methods to do Array Size Get

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Description

The list of methods to do Array Size Get are organized into topic(s).

Method

intarraySize(final int expected, final float f)
array Size 
final long s = Math.max(2L, nextPowerOfTwo((long) Math.ceil((double) ((float) expected / f))));
if (s > 1073741824L) {
    throw new IllegalArgumentException(
            "Too large (" + expected + " expected elements with load factor " + f + ")");
} else {
    return (int) s;
intarraySize(final int expected, final float f)
Returns the least power of two smaller than or equal to 230 and larger than or equal to Math.ceil( expected / f ). 
final long s = nextPowerOfTwo((long) Math.ceil(expected / f));
if (s > (1 << 30))
    throw new IllegalArgumentException(
            "Too large (" + expected + " expected elements with load factor " + f + ")");
return (int) s;
longarraySizeOf(int[] array)
array Size Of 
if (array == null)
    return 0;
return calArraySize(array.length, SIZE_OF_INT);