1. 声明一个数组
[cc lang="java"]
String[] aArray = new String[5];
String[] bArray = {"a","b","c", "d", "e"};
String[] cArray = new String[]{"a","b","c","d","e"};
[/cc]
2. 输出一个数组
[cc lang="java"]
int[] intArray = { 1, 2, 3, 4, 5 };
String intArrayString = Arrays.toString(intArray);

// print directly will print reference value
System.out.println(intArray);
// [I@7150bd4d

System.out.println(intArrayString);
// [1, 2, 3, 4, 5]
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3. 从一个数组创建数组列表
[cc lang="java"]
String[] stringArray = { "a", "b", "c", "d", "e" };
ArrayList arrayList = new ArrayList(Arrays.asList(stringArray));
System.out.println(arrayList);
// [a, b, c, d, e]
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4. 检查一个数组是否包含某个值
[cc lang="java"]
String[] stringArray = { "a", "b", "c", "d", "e" };
boolean b = Arrays.asList(stringArray).contains("a");
System.out.println(b);
// true
[/cc]
5. 连接两个数组
[cc lang="java"]
int[] intArray = { 1, 2, 3, 4, 5 };
int[] intArray2 = { 6, 7, 8, 9, 10 };
// Apache Commons Lang library
int[] combinedIntArray = ArrayUtils.addAll(intArray, intArray2);
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6. 声明一个内联数组（Array inline）
[cc lang="java"]
method(new String[]{"a", "b", "c", "d", "e"});
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7. 把提供的数组元素放入一个字符串
[cc lang="java"]
// containing the provided list of elements
// Apache common lang
String j = StringUtils.join(new String[] { "a", "b", "c" }, ", ");
System.out.println(j);
// a, b, c
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9. 将一个数组转换为集（set）
[cc lang="java"]
Set set = new HashSet(Arrays.asList(stringArray));
System.out.println(set);
//[d, e, b, c, a]
[/cc]
10. 逆向一个数组
[cc lang="java"]
int[] intArray = { 1, 2, 3, 4, 5 };
ArrayUtils.reverse(intArray);
System.out.println(Arrays.toString(intArray));
//[5, 4, 3, 2, 1]
[/cc]
11.移除数组中的元素
[cc lang="java"]
int[] intArray = { 1, 2, 3, 4, 5 };
int[] removed = ArrayUtils.removeElement(intArray, 3);//create a new array
System.out.println(Arrays.toString(removed));
[/cc]
12. 将整数转换为字节数组
[cc lang="java"]
byte[] bytes = ByteBuffer.allocate(4).putInt(8).array();