Cacher is the code snippet organizer for pro developers

private void grow(int minCapacity) {
    // overflow-conscious code
    int oldCapacity = elementData.length;
    int newCapacity = oldCapacity + (oldCapacity >> 1);
...
    // minCapacity is usually close to size, so this is a win:
    elementData = Arrays.copyOf(elementData, newCapacity);
}
public void trimToSize() {
    modCount++;
    if (size < elementData.length) {
        elementData = Arrays.copyOf(elementData, size);
    }
}