使用 Arrays.copyOf 进行数组复制，arrays.copyof数组,import java.

使用 Arrays.copyOf 进行数组复制，arrays.copyof数组,import java.

import java.util.Arrays;public class ArrayCopy {  public static void main(String args[]) {    System.out.printf("Before (original)\t%s%n", Arrays.toString(args));    String copy[] = Arrays.copyOf(args, 4);    System.out.printf("Before (copy)\t\t%s%n", Arrays.toString(copy));    copy[0] = "A";    copy[1] = "B";    copy[2] = "C";    copy[3] = "D";    System.out.printf("After (original)\t%s%n", Arrays.toString(args));    System.out.printf("After (copy)\t\t%s%n", Arrays.toString(copy));  }}