Java Utililty Methods Array Length Get

List of utility methods to do Array Length Get

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Array Length Get

Description

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

Method

void arrayBounds(int arrayLength, int offset, int length)
array Bounds

if (offset < 0 || length < 0 || length > arrayLength - offset) {
 throw new IndexOutOfBoundsException(
 "array.length=" + arrayLength + ", offset=" + offset + ", length=" + length);

int arrayCounter(T[] x)
array Counter

int z = 0;
for (int i = 0; i < x.length; i++) {
 T y = x[i];
 if (y != null) {
 z++;
return z;
...

int arrayLenght(Object array)
array Lenght

if (array instanceof Object[]) {
 return ((Object[]) array).length;
} else if (array instanceof int[]) {
 return ((int[]) array).length;
} else if (array instanceof long[]) {
 return ((long[]) array).length;
} else if (array instanceof double[]) {
 return ((double[]) array).length;
...

int arrayLength(Object array, int defaultIfNull, int defaultIfNotArray)
array Length

if (array == null) {
 return defaultIfNull; 
} else if (array instanceof Object[]) {
 return ((Object[]) array).length;
} else if (array instanceof long[]) {
 return ((long[]) array).length;
} else if (array instanceof int[]) {
 return ((int[]) array).length;
...

int arrayLength(Object o)
array Length

if (o instanceof Object[])
 return ((Object[]) o).length;
else if (o instanceof boolean[])
 return ((boolean[]) o).length;
else if (o instanceof float[])
 return ((float[]) o).length;
else if (o instanceof double[])
 return ((double[]) o).length;
...

int arrayLength(Object[] ar)
array Length

return ar.length;

int length(byte[] array)
length

return (array == null ? 0 : array.length);

String length(byte[] array)
length

return "(" + array.length + " B)";

double length(double[] a)
length

double c = 0;
for (int i = 0; i < a.length; i++)
 c += a[i] * a[i];
return Math.sqrt(c);

double length(double[] point)
length

return Math.sqrt(stScalarProd(point, point));