How do to use ArrayCopy?

[Travis Gn]

I tried copying arrays:
array1 = array2;
It's not working. Someone said to copy an array you need to use Arraycopy I don't know how to use this? Any help?

[Ernest Friedman-Hill]

Assigning array1=array2 will, as you have probably already figured out, just give you two pointers to the same array.
To copy any array, you can use the static method arraycopy() in the java.lang.System class, like this:

int[] array = { 1, 2, 3, 4, 5 };
int[] copy = new int[array.length];
System.arraycopy(array, 0, copy, 0, array.length);

To find out what the various parameters mean, see the Javadoc for this method.