数组大小重新分配 Arrays.copyOfXxxx，,import java.

数组大小重新分配 Arrays.copyOfXxxx，,import java.

import java.util.Arrays;public class ArrayReallocationDemo {  public static void main(String[] args) {    int[] data1 = new int[] { 1, 3, 5, 7, 9 };    printArray(data1);    int[] data2 = Arrays.copyOf(data1, 6);    data2[5] = 11;    printArray(data2);    int[] data3 = Arrays.copyOfRange(data1, 2, 10);    printArray(data3);  }  // print array elements  private static void printArray(int[] data) {    StringBuilder stringBuilder = new StringBuilder(\"[\");    for (int i = 0; i < data.length; i++) {      stringBuilder.append(data[i]);      if (i < data.length - 1)        stringBuilder.append(\", \");    }    stringBuilder.append(\"]\");    System.out.println(stringBuilder);  }}//[1, 3, 5, 7, 9]//[1, 3, 5, 7, 9, 11]//[5, 7, 9, 0, 0, 0, 0, 0]//该片段来自于http://byrx.net