How do you set one array's values to another array's values in Java?

Question

Lets say you had two arrays:

    int[] a = {2, 3, 4};
    int[] b = {4, 5, 6};

How would you set array a to array b and keep them different dif

Answer 1

For arrays, take a look at:

• System.arraycopy();
• Arrays.copyOf() and Arrays.copyOfRange();
• Object.clone().

For ArrayList:

• ArrayList.clear() and ArrayList.addAll();
• ArrayList.ArrayList(Collection<? extends E> c);
• Object.clone().

I think this should give you enough pointers to make progress with your homework.

Answer 2

You may want to use clone:

a = b.clone();

or use arraycopy(Object source, int sourcePosition, Object destination, int destinationPosition, int numberOfElements)

System.arraycopy(b, 0, a, 0, b.length());