String [] arr = new String[10]
//两种没什么区别,只是上面可读性比较好
String arr[] = new String[10]
//直接初始化数组
String[] arr = {"a","b"}
//先定义一个数组
String [] arr = null
//赋值数组的第一个值
arr[0] = "a"
String [] arr = new String[10]
//两种没什么区别,只是上面可读性比较好
String arr[] = new String[10]
//直接初始化数组
String[] arr = {"a","b"}
//先定义一个数组
String [] arr = null
//赋值数组的第一个值
arr[0] = "a"