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);
　　}
}
}