Java Utililty Methods Array Clone

if (array == null) {
    return null;
return (int[]) array.clone();

int[] result = new int[array.length];
System.arraycopy(array, 0, result, 0, array.length);
return result;

int nx = in.length;
int[] out = new int[nx];
for (int i = 0; i < nx; i++) {
    out[i] = in[i];
return out;

int[] dest = new int[src.length];
System.arraycopy(src, 0, dest, 0, src.length);
return dest;

if (src.length != dest.length) {
    throw new IllegalArgumentException("Arrays differ in sizes!");
System.arraycopy(src, 0, dest, 0, src.length);
return dest;

return (array != null) ? array.clone() : new Object[0];

return array == null ? null : (Object[]) ((Object[]) array.clone());

Shallow clones an array returning a typecast result and handling null.

The objects in the array are not cloned, thus there is no special handling for multi-dimensional arrays.

This method returns null for a null input array.

if (array == null) {
    return null;
return (Object[]) array.clone();

if (source == null) {
    return null;
Object[] dest = new Object[source.length];
for (int i = 0; i < source.length; i++) {
    dest[i] = source[i];
return dest;
...

for (int i = 0; i < src.length; i++) {
    trg[i] = src[i];
return trg;