Arrays复制-方法copyOf()

Arrays数组copy

Arrays提供了数组拷贝的方法copyOf

public static char[] copyOf(char[] original, int newLength);

public static double[] copyOf(double[] original, int newLength)

方法copyOf调用了System.arraycopy(),如下面的代码：

public static boolean[] copyOf(boolean[] original, int newLength) {        boolean[] copy = new boolean[newLength];        System.arraycopy(original, 0, copy, 0,                         Math.min(original.length, newLength));        return copy;    }