ArrayList(Arrays.asList(stringArray));
System.out.println(arrayList);
// [a, b, c, d, e]
4 检查...array中是否存在某个元素
String[] stringArray = { "a", "b", "c", "d", "e" };
boolean b = Arrays.asList(stringArray...).contains("a");
System.out.println(b);
// true
5 连接两个array
int[] intArray = { 1, 2, 3, 4, 5 };
int[]
