1 package com.jdk7.chapter4;
2
3 public class AdjustArrayLength {
4 private static int ADD_LENGTH = 10;
5 public static Integer[] addArrayLength(Integer[] src){
6 return addArrayLength(src,ADD_LENGTH);
7 }
8
9 public static Integer[] addArrayLength(Integer[] src, int length){
10 if(src==null){
11 return null;
12 }
13 Integer[] dest = new Integer[src.length+length];
14 System.arraycopy(src, 0, dest, 0, src.length);
15 return dest;
16 }
17
18 public static void printArray(Integer[] obj){
19 for(int i=0;i<obj.length;i++){
20 System.out.print(obj[i].toString()+" ");
21 }
22 System.out.println();
23 }
24
25 public static void main(String[] args) {
26 Integer[] array = new Integer[10];
27 for(int i=0;i<10;i++){
28 array[i] = Integer.valueOf(i);
29 // array[i] = new Integer(i);
30 }
31
32 Integer[] initArray = AdjustArrayLength.addArrayLength(array);
33 // Integer[] initArray = AdjustArrayLength.addArrayLength(array, 5);
34 for(int i=10;i<initArray.length;i++){
35 initArray[i] = Integer.valueOf(i);
36 }
37 AdjustArrayLength.printArray(initArray);
38 }
39 }
40
41 执行结果：
42 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
