数组的扩容

/*
author by shouce.ren
文件名:Main.java
*/
 
public class Main {
public static void main(String[] args) {
  String[] names = new String[] { "A", "B", "C" };
  String[] extended = new String[5];
  extended[3] = "D";
  extended[4] = "E";
  System.arraycopy(names, 0, extended, 0, names.length);
  for (String str : extended){
  System.out.println(str);
  }
}
}

原文地址:https://www.cnblogs.com/CrisZjie180228/p/8821961.html