使用 Arrays.copyOf 进行数组复制详解编程语言

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)); 
  } 
}