Java數組的複製方法

Java複製數據的三種方式：

1、System.arraycopy()：

public static void main(String[] args)
{
    Object[] array = { "1", "2" };
    Object[] arrayNew = new Object[array.length];
    System.arraycopy(array, 0, arrayNew, 0, array.length);
    for (int i = 0; i < array.length; i++)
    {
        System.out.print(arrayNew[i] + " ");
    }
}

2、Arrays.copyof()：

public static void main(String[] args)
{
    Object[] array = { "1", "2" };
    Object[] arrayNew = Arrays.copyOf(array, array.length);
    for (int i = 0; i < array.length; i++)
    {
        System.out.print(arrayNew[i] + " ");
    }
}

3、Arrays.copyOfRange()：

public static void main(String[] args)
{
    Object[] array = { "1", "2" };
    Object[] arrayNew = Arrays.copyOfRange(array, 0, array.length);
    for (int i = 0; i < array.length; i++)
    {
        System.out.print(arrayNew[i] + " ");
    }
}